EXAMINATIONS COUNCIL OF SWAZILAND
in collaboration with
UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS
Swaziland General Certificate of Secondary Education
* 7 1 4 3 4 9 8 9 6 4 *
6884/01
BIOLOGY
Paper 1 Short Answers
October/November 2011
1 hour
Candidates answer on the Question Paper.
No Additional Materials are required.
READ THESE INSTRUCTIONS FIRST
Write your Centre number, candidate number and name on all the work you hand in.
Write in dark blue or black pen.
You may use a soft pencil for any diagrams, graphs or rough working.
Do not use staples, paper clips, highlighters, glue or correction fluid.
DO NOT WRITE IN ANY BARCODES.
Answer all questions.
Write your answers in the spaces provided on the question paper.
You may use a calculator.
At the end of the examination, fasten all your work securely together.
The number of marks is given in brackets [ ] at the end of each question or part question.
For Examiner’s Use
This document consists of 8 printed pages.
DC (NH/CGW) 35044/4
© ECOS 2011
[Turn over
2
1
Match the tissue to the function that it performs by drawing a straight line from the tissue to
its function.
Tissue
Function
xylem
sweeping of dust
particles
red blood cells
conduction of water
ciliated cells
absorption of water
transport of oxygen
[3]
2
State the importance of the following nutrients in a diet.
calcium ....................................................................................................................................
.................................................................................................................................................
vitamin C .................................................................................................................................
.................................................................................................................................................
[2]
© UCLES 2011
6884/01/O/N/11
For
Examiner’s
Use
3
3
Fig. 3.1 shows decay in part of a human tooth.
For
Examiner’s
Use
Fig. 3.1
(a) Name the type of tooth shown in Fig. 3.1.
...................................................................................................................................... [1]
(b) Name the part of the tooth that is decayed in Fig. 3.1.
...................................................................................................................................... [1]
(c) State two ways in which tooth decay could be prevented.
1. ......................................................................................................................................
2. ......................................................................................................................................
[2]
(d) Label, on the diagram, the part which contains nerve endings.
© UCLES 2011
6884/01/O/N/11
[1]
[Turn over
4
4
Fig. 4.1 shows a section through the heart.
For
Examiner’s
Use
C
B
D
A
Fig. 4.1
(a) Name the parts labelled A and C.
A. .....................................................................................................................................
C. .....................................................................................................................................
[2]
(b) Circle a letter in Fig. 4.1 that shows a blood vessel which carries deoxygenated blood.
[1]
5
Complete the equation for anaerobic respiration in yeast.
glucose
6
……………………
(enzymes)
+
carbon dioxide
+
energy
[1]
The paragraph below describes excretion in the kidney. Complete the description by filling in
the blanks using the given terms:
filtration
osmosis
re-absorption
sweat
urine
Each term may be used once, more than once, or not at all.
During excretion in the human kidneys some substances are removed from the blood in a
process called ……………………… . Glucose and some salts are taken back into the blood
in the process called …………………………….. while others are eliminated from the bladder
as …………………….………
[3]
© UCLES 2011
6884/01/O/N/11
5
7
Fig. 7.1 shows a bean seedling in the soil shortly after germinating and several hours after.
shoot
For
Examiner’s
Use
root
shortly after germinating
several hours after
Fig. 7.1
(a) Name the stimulus that the root is responding to by growing downwards.
...................................................................................................................................... [1]
(b) State the type of response shown by the shoot growing upwards.
...................................................................................................................................... [1]
8
A person stands and looks at a moving car over an interval of 10 s. Fig. 8.1 shows his eye in
longitudinal section over this period.
lens
0s
5s
10 s
Fig. 8.1
(a) State the direction of movement of the car in relation to the person.
...................................................................................................................................... [1]
(b) State the term used to describe the ability of the eye to view near and far objects.
...................................................................................................................................... [1]
© UCLES 2011
6884/01/O/N/11
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6
9
Fig. 9.1 shows a stem that was left lying down in a garden and its appearance four weeks
later.
stem before
stem after 4 weeks
Fig. 9.1
(a) Name the method of reproduction that is shown in Fig. 9.1.
...................................................................................................................................... [1]
(b) Name one example of a plant that reproduces in the same way as the stem in Fig. 9.1.
...................................................................................................................................... [1]
10 Fig. 10.1 shows the female reproductive system.
Fig. 10.1
(a) Label on Fig. 10.1, using the appropriate letter and label-line, the regions where the
following occur.
E
F
G
– production of oestrogen
– implantation of the foetus
– surgery is performed as a method of birth control.
[3]
© UCLES 2011
6884/01/O/N/11
For
Examiner’s
Use
7
11 People who misuse drugs often inject the drugs into their bodies.
For
Examiner’s
Use
Describe the dangers of sharing the needles used for this purpose.
.................................................................................................................................................
.................................................................................................................................................
.................................................................................................................................................
............................................................................................................................................. [2]
12 In the wild, only the very fast zebras survive and pass on their genes to their young ones.
The slow zebras die before they reach maturity.
(a) Name this type of selection.
...................................................................................................................................... [1]
(b) Broiler chickens grow fast and require little food to mature. This was achieved through
selection. State the purpose of such selection.
..........................................................................................................................................
...................................................................................................................................... [1]
13 Fig. 13.1 shows a food chain.
maize
grasshopper
chicken
human being
Fig. 13.1
(a) State the position occupied by the grasshopper in the food chain.
...................................................................................................................................... [1]
(b) State the principal source of energy for the maize.
...................................................................................................................................... [1]
(c) Explain why it would be more efficient for human beings to feed on maize instead of
chicken.
..........................................................................................................................................
..........................................................................................................................................
...................................................................................................................................... [2]
© UCLES 2011
6884/01/O/N/11
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8
(e) Fig. 13.2 shows a pyramid for the food chain in Fig. 13.1.
For
Examiner’s
Use
Fig. 13.2
Name the type of pyramid shown in Fig. 13.2.
...................................................................................................................................... [1]
14 State one undesirable effect of each of sewage and sulfur dioxide pollution to the
environment.
(a) sewage ............................................................................................................................
...................................................................................................................................... [1]
(b) sulfur dioxide ....................................................................................................................
...................................................................................................................................... [1]
15 Woodlice are invertebrate animals that live under the bark of trees. They move to shelter if
the bark is removed.
Name the type of response shown by the woodlice.
............................................................................................................................................. [1]
16 State the function of the following nutrients in plants.
(a) magnesium ions ...............................................................................................................
...................................................................................................................................... [1]
(b) nitrate ions .......................................................................................................................
...................................................................................................................................... [1]
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© UCLES 2011
6884/01/O/N/11