This material is compiled
from previous Life Science
Exam papers and other
supporting materials.
- ISRAEL ADEYANJU
LFSC QUESTION ONE
(PAPER ONE) –
TEACHER’S GUIDE
GRADE 12
TABLE OF CONTENT
-
Page no
Paper One (Multiple Choice Questions)
Paper One (Multiple Choice Answers)
Paper One (Biological Terms)
Paper One (Biological Terms Answers)
Paper One (Matching Columns)
Paper One (Matching Columns Answers)
Paper One (1.4, 1.5 & 1.6)
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16
17
22
25
28
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PAPER ONE (MULTIPLE CHOICE QUESTIONS)
Various options are given as possible answers to the following questions. Choose the correct
answer and write only the letter (A to D) next to the question number (1.1.1 to 1.1.10) in the
ANSWER BOOK, for example 1.11 D.
1.1 Images of objects less than six metres away from the eye are focused clearly on the retina
when the ...
A
B
C
D
pupil dilates.
ciliary muscles contract.
image falls on the optic nerve.
suspensory ligaments become taut.
1.2 The hormones that influence blood sugar levels are ...
A
B
C
D
insulin, glucagon and adrenalin.
ADH, insulin and thyroxin.
glucagon, thyroxin and ADH.
adrenalin, ADH and insulin.
1.3 The ability of the lens to change its curvature is known as ...
A
B
C
D
astigmatisation.
binocular vision.
accommodation.
pupillary mechanism.
1.4 The hatching of fertilised eggs in the body of the female such that the young are born alive,
is called ...
A
B
C
D
external fertilisation.
ovipary.
vivipary.
ovovivipary.
1.5 A person suffers from a lack of co-ordination of the right side of his body, including the limbs.
Which one of the following can be deduced from this?
A
B
C
D
The right side of the cerebellum is damaged.
The left side of the cerebellum is damaged.
Oxygen deprivation has occurred in the right half of the brain.
Nerve fibres in the right side of the brain have been severed.
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1.6 Damage to the dendrite of the motor neuron in a reflex arc would probably prevent ...
A
B
C
D
a receptor from receiving stimuli.
synaptic contact with a sensory neuron.
an impulse being transmitted to an effector organ.
an impulse being transmitted to the central nervous system.
1.7 Study the diagram representing an investigation.
The following is a list of possible reasons for the bending of the stem:
1. Cell elongation
2. Auxin distribution in the cell
3. Wind
4. Water
Which of the following is the correct combination of factors that may have led to the
bending of the stem?
A
B
C
D
(i) and (iv)
(ii) and (iv)
(i) and (ii)
(iii) and (iv)
1.8 Which plant hormone slows down the metabolism to protect the plant against
unfavourable conditions?
A
B
C
D
Gibberellins
Abscisic acid
Auxins
Gibberellins and auxins
1.9 The statements below refer to the action of different contraceptive methods.
1. Inhibits the secretion of FSH
2. Increases the level of the hormone progesterone
3. Stops the embryo from implanting in the uterus
4. Stops ovulation by inhibiting the development of the follicle
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Which combination refers to the action of the oral contraceptive pill only?
A
B
C
D
1, 2 and 3 only
1, 2 and 4 only
1, 2, 3 and 4
2, 3 and 4 only
1.10 Which ONE of the following acts as an exocrine and endocrine gland?
A
B
C
D
Thyroid gland
Pancreas
Adrenal gland
Pituitary gland
1.12 Study the diagram and answer the question.
Which labelled part represents the cerebrum?
A
B
C
D
1
2
3
4
1.12 Which ONE of the following is the correct path of sound transmission in the ear?
A
B
C
D
Ossicles, pinna, tympanum, oval window, cochlea
Pinna, tympanum, ossicles, round window, cochlea
Tympanum, ossicles, pinna, round window, cochlea
Pinna, tympanum, ossicles, oval window, cochlea
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1.13 Which ONE of the following is a function of adrenalin?
A
B
C
D
Influences pupil size and controls the amount of water lost by the body
Increases blood sugar level and blood pressure
Decreases the metabolic rate and blood sugar levels
Affects growth and increases muscle tone
1.14 A patient cannot walk properly and struggles to keep balance after a serious head injury.
Which section of the brain was possibly damaged?
A
B
C
D
Cerebrum
Cerebellum
Hypothalamus
Medulla oblongata
1.15 Which number indicates a gland with a secretion that is dependent on iodine?
A
B
C
D
1
2
3
5
1.16 Which part below forms part of the human placenta?
A
B
C
D
Fallopian tube
Chorion
Cervix
Amnion
1.17 Development of the embryo inside the body of the mother, eventually leading to live birth.
A
B
C
D
Vivipary
Ovovivipary
Fertilisation
Ovipary
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QUESTIONS 1.18 AND 1.19 are based on the following diagram.
1.18 Which combination of labels for 2, 3 and 6 respectively is CORRECT?
A
B
C
D
hammer; cochlea; Eustachian tube
anvil; cochlea; auditory canal
anvil: semicircular canals; Eustachian tube
hammer; semicircular canals; auditory canal
1.19 Choose from the following table the correct combination of structures and functions taken
from the diagram:
1.20 Which of the following parts, of the amniotic eggs of reptiles and birds, is responsible for
storing waste products?
A
B
C
D
Allantois
Yolk sac
Chorion
Amnion
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1.21 The following structures represent the developing stages of the zygote in humans.
The correct sequence of the structures that correspond to the diagrams above is …
A
B
C
D
2, 5, 4, 1, 3, 6.
2, 5, 4, 1, 6, 3.
3, 6, 1, 4, 5, 2.
2, 4, 5, 1, 3, 6.
1.22 Which ONE of the following is a method of reproduction in which young develop from eggs
that are fertilised internally and retained within the mother’s body after fertilisation but obtain
their nutrients from the egg yolk and not from the mother?
A
B
C
D
Vivipary
Ovipary
Ovovivipary
Binary fission
1.23 Which ONE of the following fluids is released from the uterus just before the start of child
birth?
A
B
C
D
Urine from the baby
Amniotic fluid
Placental fluid
Chorionic fluid
1.24 The following statements describe the functions of placenta:
1. Serves as an attachment of the embryo to the mother
2. Allows for the diffusion of dissolved nutrients from the mother to the foetus
3. Allows for the diffusion of excretory wastes from the mother to the foetus
4. Allows for the diffusion of oxygen from the mother to the foetus
Which ONE of the following combinations correctly describe the functions of placenta?
A
B
C
D
(i), (ii), and (iii)
(ii) only
(i), (ii) and (iv)
(ii) and (iii)
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1.25 Jyoti Amge, the world’s shortest woman (62,8 cm) Launched Guinness World Records
2014. Which ONE of the following endocrine glands resulted in the defective physiological
condition?
A
B
C
D
Adrenal gland
Ovary
Pituitary gland
Pancreas
1.26 A process by which spermatozoa are produced from the germinal epithelium of the testis is
known as …
A
B
C
D
oogenesis
ovulation
spermatogenesis
fertilisation
1.27 The homeostatic function of the skin is mainly that of …
A
B
C
D
osmoregulation.
acid-base regulation.
thermoregulation.
regulation of the sugar level.
1.28 During oogenesis four haploid cells are formed. How many of these haploid cells develop
into an ovum/ova?
A
B
C
D
4
2
3
1
QUESTIONS 1.29 and 1.30 refer to the information below.
The diagram below shows the position of the lateral shoot and the apical bud in a
plant.
A learner investigated the growth of lateral shoots in bean plants. Two groups of 20
plants were used. One group had their apical buds removed and the other group was
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left unchanged. Every two days the total length of the lateral shoots was measured
and the average lateral shoot length calculated for each group. The result for each
group is shown in the graph below.
1.29 From this data you may reasonably conclude that ...
A
B
C
D
Graph X represents the group that had their apical buds removed.
roots produce a substance that stimulates lateral shoot growth.
Graph Y represents the group that had their apical buds removed.
lateral shoots produce a substance that stimulates apical bud growth.
1.30 The conclusion drawn from the above results would NOT be valid if ...
A
B
C
D
a large sample was used.
apical buds were not removed from all 40 plants.
the plants used were not identical to each other.
the measurement of growth of the lateral buds was done in millimetres instead
of centimetres.
QUESTIONS 1.31 and 1.32 refer to the investigation below.
An investigation to demonstrate the response of woodlice to light was carried out in a
petri dish. Half the petri dish was covered with black paper and the other half left in
light as shown in the diagram below.
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Ten woodlice were introduced into the petri dish. The number of woodlice in each side
was counted for ten minutes every two minutes. The results are shown in the table
below.
1.31 Which of the following represents a hypothesis that can be supported by the data in the
table?
A
B
C
D
There will be fewer woodlice in the dark side than in the light side.
There will be more woodlice in the dark side than in the light side.
The investigation is done to determine the response of woodlice to light
conditions.
There will be the same number of woodlice in the dark side and the light side.
1.32 The dependent variable in this investigation is the ...
A
B
C
D
light and dark side.
time in minutes.
number of woodlice in the light or dark side.
dark side.
1.33 When the pupil of the human eye constricts, the receptor and effector are respectively the
A
B
C
D
yellow spot/fovea and the ciliary muscle.
pupil and the ciliary muscle.
pupil and the radial muscle of the iris.
yellow spot/fovea and ciliary muscle of the iris.
1.34 Which ONE of the following occurs when you look up from reading a book to look at a
distant mountain on a clear sunny day?
A
B
C
D
Pupils dilate
Ciliary muscles relax
Lens becomes more convex
Radial muscles of the iris contract
1.35 Which ONE of the following represents the correct order of the parts through which
spermatozoa pass?
A
B
Testis → vas deferens → epididymis → ureter
Vas deferens → seminal vesicles → ureter → urethra
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C
D
Testis → epididymis → vas deferens → urethra
Vas deferens → prostate gland → urethra → ureter
QUESTION 1.36 and QUESTION 1.37 are based on the diagram of a reflex arc shown
below.
1.36 Part B indicates the …
A
B
C
D
dendrite of the motor neuron.
axon of the motor neuron.
dendrite of the sensory neuron.
axon of the sensory neuron.
1.37 The correct sequence in which impulses move from the receptor to the effector in the
reflex arc above, is …
A
B
C
D
A → B → C → D→ E
C → A → B → E→ D
C → B → E → D→ A
A → D → E → B→ C
1.38 Below is a set of steps following fertilisation in humans. Which is the CORRECT order of
events?
1. The embryo is embedded in the uterine wall in humans.
2. A zygote is formed in the Fallopian tube.
3. Cell division occurs to form a ball of several hundred cells.
4. The blastocyst remains free for several days in the uterus.
A
B
C
D
2, 3, 4, 1
2, 1, 3, 4
3, 2, 4, 1
1, 3, 2, 4
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QUESTIONS 1.39 and 1.40 refer to the graph below which shows the growth of the
follicle and the ovarian hormone levels.
1.39 Which hormones are represented by A and B?
A
B
C
D
Progesterone and LH
FSH and LH
Oestrogen and progesterone
Oestrogen and FSH
1.40 What is the follicle called after day 14?
A
B
C
D
Primary follicle
Graafian follicle
Secondary follicle
Corpus luteum
1.41 Menstruation starts when the production of …
A
B
C
D
oestrogen and progesterone decreases.
oestrogen is at its maximum.
progesterone is at its maximum.
oxytocin decreases.
1.42 The control centre in the body that will be activated when an athlete is dehydrated is the…
A
B
C
D
cerebellum.
cerebrum.
corpus callosum.
pituitary gland.
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1.43 Grommets are used in the treatment of …
A
B
C
D
deafness.
blindness.
middle-ear infection.
multiple sclerosis.
1.44 The receptor(s) involved in maintaining balance is/are the …
A
B
C
D
organ of Corti only.
maculae only.
maculae and cristae only.
organ of Corti, maculae and cristae.
1.45 Which of the following structures are involved in maintaining balance when there is a
change in the direction of movement of the body?
A
B
C
D
Semi-circular canals and cerebellum
Eustachian tube and cerebellum
Semi-circular canals and cerebrum
Eustachian tube and cerebrum
1.46 Which of the following structures are protected by the meninges?
A
B
C
D
Spinal cord and receptors
Spinal cord and brain
Brain and effectors
Effectors and receptors
1.47 A person produces a smaller volume of urine most probably because …
A
B
C
D
ADH levels are high in the blood and the renal tubules are more permeable to
water.
ADH levels are high in the blood and the renal tubules are less permeable to water.
ADH levels are low in the blood and the renal tubules are more permeable to water.
ADH levels are low in the blood and the renal tubules are less permeable to water.
1.48 During a reflex action, impulses enter the spinal cord by means of a/an …
A
B
C
D
sensory neuron through the ventral root of the spinal nerve.
sensory neuron through the dorsal root of the spinal nerve.
interneuron through the ventral root of the spinal nerve.
interneuron through the dorsal root of the spinal nerve.
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1.49 Two men were given a glucose-rich meal at the same time (0 hours). One man is diabetic
and the other is non-diabetic. The diabetic did not receive any medical treatment. Their
blood glucose levels were measured over a period of 3 hours.
The graphs below show the possible blood glucose levels of the two men during this time.
Which ONE of the graphs correctly represents the blood glucose levels of the two men?
A
B
C
D
W
X
Y
Z
1.50 Which structures secrete progesterone during pregnancy?
A
B
C
D
Adrenal gland and corpus luteum
Corpus luteum and placenta
Thyroid gland and Graafian follicle
Pituitary gland and Graafian follicle
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PAPER ONE (MULTIPLE CHOICE ANSWERS)
1.1 B
1.2
A
1.3
C
1.4
D
1.5
B
1.6 C
1.7
C
1.8
B
1.9
B
1.10
B
1.11 A
1.12
D
1.13
B
1.14
B
1.15
B
1.16 B
1.17
A
1.18
C
1.19
C
1.20
A
1.21 B
1.22
C
1.23
B
1.24
C
1.25
C
1.26 C
1.27
C
1.28
D
1.29
A
1.30
C
1.31 B
1.32
C
1.33
C
1.34
B
1.35
C
1.36 C
1.37
C
1.38
A
1.39
C
1.40
D
1.41 A
1.42
D
1.43
C
1.44
C
1.45
A
1.46 B
1.47
A
1.48
B
1.49
C
1.50
B
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PAPER ONE (BIOLOGICAL TERMS)
Give the correct biological term for each of the following descriptions. Write only the term
next to the question number (1.2.1 to 1.2.6) in your ANSWER BOOK.
1.1 The type of development in birds where the young are practically fully developed and
immediately mobile when they are hatched
1.2 Nerve fibres that conduct nerve impulses away from the cell body of a neuron
1.3 The formation of ova from the germinal epithelial cells through the process of meiosis
1.4 A behavioural pattern where the parents spend time and energy on the feeding and
protection of their offspring
1.5 A functional (physiological), but not direct, connection between two successive
neurons
1.6 The process whereby the embryo becomes attached to the endometrial wall of the
uterus
1.7 The blood vessel that carries oxygenated blood to the foetus
1.8 The period during which the embryo develops within the uterus of the mother up to the
time the baby is born
1.9 A disorder that occurs when one’s own immune system surrounds, attacks and
destroys the myelin sheath that envelops the axons
1.10 Three-month-old human embryo
1.11 The membrane that forms finger-like projections which grows into the uterine wall
1.12 A phenomenon where an increase in one hormone inhibits the secretion of another
hormone
1.13 A disease in which the hormonal control of blood glucose is defective because of a
deficiency of insulin
1.14 The liquid that protects the embryo against mechanical injury and dehydration
1.15 The increase of the internal diameter of blood vessels so that more blood flows through
them
1.16 Structure in the sperm cell containing enzymes that break down the membrane of the
ovum
1.17 The release of an ovum from a follicle
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1.18 The tube that transports the sperm from the testis to the urethra
1.19 A hormone produced in females to stimulate milk production
1.20 The structure formed from the Graafian follicle after ovulation
1.21 The process by which sperms and eggs are produced
1.22 The organ in human males in which meiosis occurs
1.23 The meiotic process by which female gametes are formed in humans
1.24 The blood vessel in the umbilical cord which is rich in oxygen and nutrients
1.25 The lower neck of the uterus that opens into the vagina
1.26 The membranes which protect the central nervous system
1.27 A plant growth hormone that stimulates seed germination
1.28 The nervous system which consists of cranial and spinal nerves
1.29 A branch of the autonomic nervous system that decreases the heartbeat back to
normal
1.30 The outermost extra-embryonic membrane surrounding the embryo
1.31 The hormone that regulates the salt concentration in the human body
1.32 The cells, in the retina of the eye that are sensitive to light
1.33 The tube that connects the middle ear to the throat cavity to ensure that the pressure
on either side of the tympanic membrane is kept constant
1.34 Defect of the eye due to a clouding of the eye’s normal, clear, transparent lens,
affecting acuity of vision
1.35 A fluid containing sperm cells
1.36 A rapid, automatic response to a stimulus
1.37 The structure, within the cochlea, responsible for the conversion of a sound stimulus
into an impulse.
1.38 Microscopic space between two consecutive neurons
1.39 The part of the nervous system outside the brain and spinal cord
1.40 A stage in the development of humans in which the embryo consists of a layer of cells
surrounding a cavity
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1.41 The gland in the male reproductive system of humans that produces an alkaline fluid
to counteract the acid environment of the vagina
1.42 The maintenance of a constant internal environment in living organisms
1.43 Neurons that carry impulses from receptors
1.44 The watery fluid that supports the cornea and the front chamber of the eye
1.45 The hormone produced by the Graafian follicle
1.46 The hormone responsible for the formation of the corpus luteum
1.47 The receptors in the ear that detect changes in the direction and speed of any
movement of the body
1.48 A hormone which stimulates the secretion of thyroxin
1.49 The type of fertilisation associated with viviparous reproduction
1.50 The series of changes that take place in the shape of the lens and the eyeball in
response to the distance of an object from the eye
1.51 A type of reproduction in humans where the foetus develops inside the uterus
1.52 The movement of part of a plant in response to gravity
1.53 The stage in humans when sexual maturity is reached in males and females
1.54 A change in the internal or external environment that will be detected by a receptor
and converted into an impulse
1.55 Small tubes placed in the tympanic membrane to drain liquid from the middle ear
1.56 Part of the human ear that directs sound waves into the auditory canal
1.57 The diploid cell formed by the process of fertilisation
1.58 A part of the neuron that conducts impulses towards the cell body
1.59 The part of the brain that controls the heart rate
1.60 The maintenance of a constant internal environment in the body within certain limits
1.61 The plant growth hormone that promotes seed dormancy
1.62 A hormone that stimulates the maturation of sperm
1.63 The part of the peripheral nervous system that controls involuntary actions
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1.64 A plant hormone that causes leaves to fall off trees in autumn
1.65 The structure in the amniotic egg that stores wastes
1.66 The inner lining of the uterus where implantation of the embryo occurs
1.67 Part of the female reproductive system where fertilisation occurs
1.68 A type of fertilisation in which the nucleus of a sperm fuses with the nucleus of an
ovum outside the body of the female
1.69 A type of egg where the embryo develops inside a fluid-filled sac which is surrounded
by a shell
1.70 A hormone that stimulates the development of the corpus luteum
1.71 A disorder of the eye caused by the curvature of the lens or cornea being uneven,
resulting in distorted images.
1.72 The structure that connects the left and right hemispheres of the brain, allowing
communication between them
1.73 The nerve that carries impulses from the retina to the brain
1.74 The hormone responsible for osmoregulation
1.75 The place where young immature sperm cells are temporarily stored in males until
they mature
1.76 The hormone that controls the concentration of water in the blood
1.77 The hormone that increases the basic metabolic rate
1.78 An early-stage embryo consisting of a solid ball of cells
1.79 A gland of the digestive system that is both endocrine and exocrine
1.80 The gland responsible for the production of the growth hormone
1.81 A part of the retina where no photoreceptors are found
1.82 The hormone which increases the absorption of glucose by the cells
1.83 A structure in the female reproductive system where semen is deposited during
copulation
1.84 The period of development of the foetus in the uterus
1.85 The response of a part of a plant to a light stimulus
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1.86 A structure in the eye that absorbs light to prevent internal reflection
1.87 The type of egg produced by reptiles that has extra-embryonic membranes
1.88 The type of development in birds where the hatchlings' eyes are open and their bodies
are covered with down feathers
1.89 The part of the brain that receives impulses from the maculae
1.90 The dark pigmented layer of the eye
1.91 The part of the brain that controls body temperature
1.92 The gas in the blood which, when increased, causes an increase in the breathing rate
1.93 A substance containing plant hormones used to kill unwanted plants
1.94 Receptors that provide information about the position of the head
1.95 The membrane that, together with the endometrium, forms the placenta
1.96 The system in the body that regulates processes by secreting hormones directly into
the blood
1.97 The production of male gametes through meiosis.
1.98 Sharp structures found in plants for protection from herbivores
1.99 A disorder of the nervous system that is characterised by the breakdown of the myelin
sheath of neurons
1.100Substances that allow the transmission of nerve impulses between nerve cells
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PAPER ONE (BIOLOGICAL TERMS ANSWERS)
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
1.10
1.11
1.12
1.13
1.14
1.15
1.16
1.17
1.18
1.19
1.20
1.21
1.22
1.23
1.24
1.25
1.26
1.27
1.28
1.29
1.30
1.31
1.32
1.33
1.34
1.35
1.36
1.37
1.38
1.39
1.40
1.41
1.42
1.43
1.44
1.45
Precocial development
Axon
Oogenesis
Parental care
Synapse
Implantation
Umbilical vein
Gestation period
Multiple sclerosis
Foetus
Chorion
Negative feedback mechanism
Diabetes mellitus
Amniotic fluid
Vasodilation
Acrosome
Ovulation
Vas deferens/sperm duct
Prolactin
Corpus luteum
Gametogenesis
Testis/testes
Oogenesis
Umbilical vein
Cervix
Meninges
Gibberellins
Peripheral Nervous System/PNS
Parasympathetic
Chorion
Aldosterone
Photoreceptors
Eustachian tube
Cataract
Seminal fluid
Reflex action
Organ of Corti
Synapse
Peripheral Nervous System/PNS
Blastocyst
Prostate gland
Homeostasis
Sensory neuron
Aqueous humour
Oestrogen
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1.46
1.47
1.48
1.49
1.50
1.51
1.52
1.53
1.54
1.55
1.56
1.57
1.58
1.59
1.60
1.61
1.62
1.63
1.64
1.65
1.66
1.67
1.68
1.69
1.70
1.71
1.72
1.73
1.74
1.75
1.76
1.77
1.78
1.79
1.80
1.81
1.82
1.83
1.84
1.85
1.86
1.87
1.88
1.89
1.90
1.91
Luteinising hormone/LH
Cristae
Thyroid Stimulating Hormone /TSH
Internal fertilisation
Accommodation
Vivipary
Gravitropism/ Geotropism
Puberty
Stimulus
Grommet
Pinna
Zygote
Dendrites
Medulla oblongata
Homeostasis
Abscisic acid
Testosterone
Autonomic Nervous system
Abscisic acid
Allantois
Endometrium
Fallopian tube
External fertilisation
Amniotic egg
Luteinising Hormone /LH
Astigmatism
Corpus callosum
Optic nerve
Antidiuretic Hormone/ADH
Epididymis
Antidiuretic Hormone / ADH
Thyroxin
Morula
Pancreas
Pituitary gland /hypophysis
Blind spot
Insulin
Vagina
Gestation
Phototropism
Choroid
Amniotic egg
Precocial development
Cerebellum
Choroid
Hypothalamus
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1.92
1.93
1.94
1.95
1.96
1.97
1.98
1.99
1.100
Carbon dioxide
Herbicides
Maculae
Chorion
Endocrine
Spermatogenesis
Thorns
Multiple sclerosis
Neurotransmitter
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PAPER ONE (MATCHING COLUMNS)
Indicate whether each of the descriptions in COLUMN I apply to A ONLY, B ONLY, BOTH
A AND B or NONE of the items in COLUMN II. Write A only, B only, both A and B or
none next to the question number (1.3.1 to 1.3.3) in the ANSWER BOOK.
COLUMN I
1.1
An exocrine gland
1.2
A component of the peripheral nervous system
1.3
A disorder of the nervous system characterised by
the degeneration of the brain cells
The functional connection between two
consecutive neurons
The young develops and is nourished in an
amniotic egg that is retained in the mother’s body
A reproductive strategy in vertebrates where
internal fertilisation occurs
The blood vessel that transports oxygenated blood
from the placenta to the foetus
A disorder caused by the degeneration of the
myelin sheath of motor neurons
Condition affecting the cornea of the eye
1.4
1.5
1.6
1.7
1.8
1.9
1.10 Nutrition provided by the egg
1.11 Type of reproduction in vertebrates where the
foetus is attached to and develops inside the
uterus
1.12 Reproductive strategy in birds where hatchlings
are helpless and unable to move and feed
themselves
1.13 The reaction of a plant organ to a light stimulus
from one side.
1.14 Receptor for hearing
1.15 The process of discarding the uterus wall which is
accompanied by blood
1.16 A fish, laying eggs prior to fertilization
1.17 A type of gland whose secretions are transported
in ducts/tubes to a target organ
1.18 A type of lens used to correct short-sightedness
(myopia)
1.19 A symptom of Alzheimer’s disease
A:
B:
A:
B:
A:
B:
A:
B:
A:
B:
A:
B:
A:
B:
A:
B:
A:
B:
A:
B:
A:
B:
COLUMN II
Cowper's gland
Pancreas
Cranial nerves
Spinal cord
Goitre
Alzheimer's disease
Receptor
Synapse
Ovipary
Vivipary
Altricial development
Precocial development
Umbilical vein
Umbilical artery
Multiple sclerosis
Alzheimer's disease
Astigmatism
Cataract
Ovipary
Ovovivipary
Vivipary
Ovovivipary
A: Precocial
B: Altricial
A:
B:
A:
B:
A:
B:
A:
B:
A:
B:
A:
B:
A:
B:
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Phototropism
Geotropism
Rods
Cones
Menstruation
Menstrual cycle
External fertilization
Ovipary
Endocrine gland
Exocrine gland
Biconvex lens
Biconcave lens
Memory loss
Confusion
1.20 Transparent part of the sclera on the front of the
eye
1.21 Transmits the impulse from the sensory
neuron to the motor neuron in the grey
matter
1.22 Inhibits the growth of lateral branches
1.23 Place where fertilisation occurs in humans
1.24 Parental care
1.25 When the thyroid gland produces more thyroxin
hormone
1.26 The part of the brain involved in picking up a pencil
1.27 Has an exocrine as well as an endocrine function
1.28 Produces a fluid that forms part of the semen
1.29 Produces adrenalin
1.30 Maintaining a constant internal environment
1.31 May cause a decrease in the pH of the blood
1.32 The part of the brain that connects the two
hemispheres
1.33 A structure in the nervous system that detects a
stimulus
1.34 A brain disorder that results in memory loss
1.35 A hormone secreted by the pituitary gland or
hypophysis
1.36 Forms the placenta
1.37 The state of the blood vessels in the skin of a
human when the environmental temperature is
high
1.38 The hormone that is in excess in a person that
grows abnormally tall
1.39 The part of the autonomic nervous system that
controls involuntary actions
1.40 A hormone that controls the salt content in a
human body
1.41 Hormones secreted by the pituitary gland or
hypophysis
A:
B:
A:
B:
Conjunctiva
Cornea
Interneuron
Spinal cord
A:
B:
A:
B:
A:
B:
A:
B:
A:
B:
A:
B:
A:
B:
A:
B:
A:
B:
A:
B:
A:
B:
A:
B:
A:
B:
A:
B:
A:
B:
A:
B:
Abscisic acid
Auxins
Fallopian tube
Cervix
Keeping the young warm
Providing food
Hyperthyroidism
Hypothyroidism
Cerebellum
Cerebrum
Pituitary gland
Pancreas
Cowper’s gland
Seminal vesicle
Thyroid gland
Pituitary gland
Homeostasis
Negative feedback
excess glucose
excess carbon dioxide
Cerebellum
corpus callosum
Effector
Receptor
Alzheimer's disease
multiple sclerosis
Testosterone
thyroxin
Chorionic villi
Endometrium
Constricted
Dilated
A:
B:
A:
B:
A:
B:
A:
B:
ADH
Thyroxin
Sympathetic
Parasympathetic
Adrenalin
Aldosterone
Thyroxin
FSH
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1.42 Plant hormone that stimulates the germination of
seeds
1.43 Secretions from this gland contribute to the
formation of semen
1.44 Hormone secreted by the pituitary gland
1.45
1.46
1.47
1.48
1.49
1.50
1.51
1.52
1.53
1.54
1.55
1.56
1.57
1.58
1.59
1.60
A:
B:
A:
B:
A:
B:
Unfertilised eggs are released from the female's
A:
body
B:
Plant hormone that helps plant seeds to survive
A:
unfavourable conditions, e.g. droughts
B:
Hormones secreted by the pituitary gland
A:
B:
The part of a neuron that speeds up the
A:
transmission of an impulse
B:
Requires the production of a large number of
A:
gametes to ensure survival of the species
B:
A plant defence mechanism against pathogens
A:
B:
Used by plants to reduce the chances of being fed A:
upon by herbivores
B:
Female frogs lay eggs in water and the males
A:
spray sperm onto the eggs
B:
Embryo is nourished with yolk found in the egg
A:
B:
Used in the treatment of middle ear infections
A:
B:
Restricts heat loss from the blood
A:
B:
Converts glucose to glycogen
A:
B:
Provides greater chances for the fusion of sperm
A:
and egg
B:
Characteristic of vivipary
A:
B:
Place where sound stimuli are converted into nerve A:
impulses
B:
The part of the nervous system that controls the
A:
activity of the internal organs such as the heart
B:
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Gibberellins
Abscisic acid
Cowper's gland
Prostate gland
Aldosterone
Growth hormone
Asexual reproduction
External fertilisation
Gibberellins
Abscisic acid
Prolactin
Growth hormone
Myelin sheath
Axon
External fertilisation
Internal fertilisation
Chemicals
Thorns
Chemicals
Thorns
Vivipary
Ovovivipary
Ovipary
Vivipary
Cochlear implants
Grommets
Vasoconstriction
Vasodilation
Glucagon
Adrenalin
External fertilisation
Internal fertilisation
Placenta is formed
Live offspring is born
Semi-circular canals
Oval window
Sympathetic
Parasympathetic
PAPER ONE (MATCHING COLUMN ANSWERS)
1.1 Both A and B
1.2
A
1.3
B
1.4 B
1.5
None
1.6
Both A and B
1.7 A
1.8
A
1.9
A
1.10 Both A and B
1.11
A
1.12
B
1.13 A
1.14
None
1.15
A
1.16 Both A and B
1.17
B
1.18
B
1.19 Both A and B
1.20
B
1.21
A
1.22 B
1.23
A
1.24
Both A and B
1.25 A
1.26
Both A and B
1.27
B
1.28 Both A and B
1.29
None
1.30
Both A and B
1.31 B
1.32
B
1.33
B
1.34 A
1.35 None
1.36
Both A and B
1.37 B
1.38
None
1.39
Both A and B
1.40 B
1.41
B
1.42
A
1.43 Both A and B
1.44
B
1.45
B
1.46 B
1.47
Both A and B
1.48
A
1.49 Both A and B
1.50
A
1.51
Both A and B
1.52 None
1.53
A
1.54
B
1.55 A
1.56
None
1.57
B
1.58 Both A and B
1.59
None
1.60
Both A and B
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PAPER ONE (1.4, 1.5 & 1.6)
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