NAME: ……………………………………………………………..…. STREAM:…………
NAALYA S.S. NAMUGONGO
END OF TERM II EXAM 2021
S.2 BIOLOGY
INSTRUCTIONS
- Attempt ALL questions in sections A and B and only two in section C
- For section A, put the answers in the table provided
- For section B, write the answers in the spaces provides
- For section C, write the answers on answer sheets.
Table for teacher’s use
Section B
Section C
Section A
Total
Table for answers to section A
Qn.
Ans.
Qn.
Ans.
Qn.
Ans.
Qn.
Ans.
Qn.
Ans.
Qn.
1
6
11
16
21
26
2
7
12
17
22
27
3
8
13
18
23
28
4
9
14
19
24
29
5
10
15
20
25
30
Ans.
SECTION A
1.
Compared with clay soil, sand soil,
A. Has good water retaining capacity
B. Is light and easy to dig
C. Is slow draining
D. Has small, limited air spaces.
2.
The principal role of a flower in the life cycle of a plant is;
A. Attract insects
C.
Producing seeds
B. Producing fruits
D.
Producing pollen grains
1
3.
4.
5.
The type of soil suitable for agriculture is;
A. Sand soil
B. Clay soil
C.
D.
Loam soil
Silt
The grasshopper belongs to order;
A. Dictyoptera
B. Isoptera
C.
D.
Orthoptera
Hymenoptera
The figure below represents;
A.
B.
C.
D.
Syncarpous pistil
Apocarpous pistil
Monocarpous pistil
Pericarpous pistil
6.
The living together of a fungus and an alga as lichen is called;
A. Symbiosis
C.
Parasitism
B. Commensalism
D.
Mutualism
7.
Which of the following is a characteristic of a soil with low capillarity?
A. Poor water retention
C.
Poor aeration
B. Poor drainage
D.
Small particles
8.
Which of the following organisms is a heterotroph?
A. Mushroom
C.
Alga
B. Tick
D.
Grasshopper
9.
The carbohydrate stored in animals is;
A. Cellulose
B. Glucose
10.
C.
D.
A millet grain is both a seed and a fruit because;
A. Has both endosperm and cotyledon
B. Has two scars
C. Has pericarp fused with testa
D. Its eaten and also planted
2
Starch
Glycogen
11.
Which of the following is an economic importance of termites?
A. Transmit diseases to man
B. Destroy wood and man’s crops
C. They attack man’s animals
D. They are pollinators
12.
In animals, the organ which acts as a reservoir for carbohydrates is the;
A. Pancreas
C.
Liver
B. Gall bladder
D.
Body tissues
13.
Which one of the following structures is not part of the alimentary canal?
A. Duodenum
C.
Liver
B. Stomach
D.
Mouth
14.
The larva of an anopheles mosquito breathes through;
A. Trumpets
C.
Spiracles
B. Siphon
D.
Trachioles
15.
A tomato and a guava fruits are said to be berries because both;
A. Are freshly and juicy
B. Have seeds
C. Have two scars
D. Have an epicarp, mesocarp and endocarp
16.
Which of these parts of a leaf is mainly for photosynthesis?
A. Palisade cells
B. Epidermal cells
C. Spongy cells
D. Guard cells
17.
Soils is described as clay when its soil particles have a diameter of;
A. Greater than 0.02 mm
B. Less than 0.02 mm
C. Less than 0.002 mm
D. Less than 0.2 mm
18.
Which one of the following monosaccharide is a common component of sucrose,
starch and glycogen?
A. Fructose
C.
Galactose
B. Glucose
D.
Maltose
3
19.
Green plants and some bacteria are said to exhibit;
A. Heterotrophic mode of nutrition
B. Symbiotic nutrition
C. Saprophytic nutrition
D. Autotrophic mode of nutrition
20.
The part of the stem responsible for conduction of manufacture food is;
A. Cambium
C.
Xylem
B. Phloem
D.
Pith
21.
The figure below shows a maize grain;
A
B
C
D
Which part develops into a shoot system: ..................................................
22.
During seed germination, the seeds take in water in order to......
A. Allow embryo to germinate
B. Dilute growth inhibitors
C. Break down food substances in the seed
D. Allow enzymes work in a suitable temperature
23.
Which of the following would be the reason why insects do not usually grow big in
size?
A. Their rate of cell division is low
B. The growth is limited by the exoskeleton
C. The internal organs are usually small
D. They lose much water thus their growth is limited.
24.
Photosyntheiss occurs exactly in the;
A. Starch granules
B. Palisade cells
25.
C.
D.
Spongy cells
Chloroplasts
The term distarching refers to;
A. Removing starch from plant leaves by exposing them to light
B. Removing starch from plant leaves by putting the plant in darkness
C. Helping plant leaves to make starch by exposure to light
D. Turning of the starch in the leaves to starch by exposure to light.
4
26.
When carrying out the starch test on a leaf, boiling the leaf in alcohol is to;
A. Kill the protoplasm
B. Make the cells permeable to iodine
C. Break down the starch granules
D. Remove the chlorophyll
27.
The release of energy in the body due to breakdown of food substances is known as;
A. Nutrition
B. Respiration
C. Irritability
D. Digestion
28.
Which one of the following is not true about plants:
A. Have chlorophyll
B. Growth occurs at the root and shoot tips
C. Do not move
D. Respond to stimuli.
29.
Which of the following legumes undergoes hypogeal germination?
A. Soya
B. Peas
C. Wheat
D. Kidney beans
30.
Which of the following is not a function of organic matter in the soil?
A. Provides the frame work of the soil
B. Improves soil capillarity
C. Limits leaching
D. Source of food to some organisms in the soil
SECTION B
31.
(a)
Name the raw materials and products of photosynthesis.
Raw materials:............................................................................... (01 mark)
.........................................................................................................
Products : ..................................................................................... (01 mark)
.........................................................................................................
5
(b)
State products of the light stage and dark stage of photosynthesis.
Products of light stage: .................................................................. (02 marks)
...............................................................................................................
Products of dark stage: ...............................................................
(01 mark)
............................................................................................................
(c)
State four importances of photosynthesis.
(04 marks)
(i)
..............................................................................................................................
..............................................................................................................................
(ii)
..............................................................................................................................
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(iii)
..............................................................................................................................
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(iv)
..............................................................................................................................
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32.
(a)
What is soil profile?
(01 mark)
..............................................................................................................................
..............................................................................................................................
(b)
State the components of soil profile.
(03 marks)
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..............................................................................................................................
..............................................................................................................................
(c)
Outline three characteristics for each component mentioned above. (09 marks)
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6
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33.
Below is a table of characteristics of fruits A, B, C and D. Study it carefully and
answer the following questions:
Specimen
Nature of pericarp
Number of seeds
Type of
placentation
A
Dry, sticky , rough,
Many
Marginal
segmented two
sutures.
B
Succulent, smooth,
Many
Pariental
segmented
C
Dry, extended, smooth
One
Basal
D
Dry, rough, many
Many
Axile
sutures
(a)
With a reason in each case, identify the specimens A, B, C and D.
A
:
......................................................................................................
Reason:
.......................................................................................................
..............................................................................................................................
B
:
......................................................................................................
Reason:
.......................................................................................................
..............................................................................................................................
C
:
......................................................................................................
Reason:
.......................................................................................................
..............................................................................................................................
D
:
......................................................................................................
Reason:
.......................................................................................................
..............................................................................................................................
7
(b)
Construct a dichotomous key of fruits A, B, C and D.
(13 marks)
SECTION C
34.
(a)
(b)
State three similarities and three differences between a housefly and a tick.
(06 marks)
How is the tick adapted to its mode of life?
(09 marks)
35.
(a)
(b)
(c)
State the types of carbohydrates giving an example in each case. (03 marks)
Outline three properties for each carbohydrate.
(09 marks)
Mention the importances of carbohydrates to living organisms. (03 marks)
36.
(a)
(b)
(c)
What is weathering?
Describe the types of weathering.
Explain the factors that affect weathering.
(02 marks)
(06 marks)
(07 marks)
END
Put all your answered papers in one manila file labeled with your name and
class.
8