NAMIBIA SENIOR SECONDARY CERTIFICATE

BIOLOGY ORDINARY LEVEL 4322/1

PAPER 1 Multiple Choice 1 hour
Marks 40 2015

Additional Materials: Multiple choice answer sheet

Soft clean eraser
Soft pencil (type B or HB is recommended)

INSTRUCTIONS AND INFORMATION TO CANDIDATES

V E L
L E
• Write in soft pencil.
• Answer all questions.

Y
• Make sure that you receive the multiple choice answer sheet with your Candidate Number
on it.

R
• There are forty questions on this paper.

A
• For each question, there are four possible answers A, B, C and D. Choose the one you
consider correct and record your choice in soft pencil on the separate answer sheet.

N
• If you want to change an answer, thoroughly erase the one you wish to delete.

I
Read the instructions on the answer sheet carefully.

R D
• Each correct answer will score one mark.
• All questions in this paper carry equal marks.

O
• Any rough working should be done in this booklet.
• You may use a non-programmable calculator.

This document consists of 12 printed pages.

134662

Republic of Namibia
MINISTRY OF EDUCATION
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1 The diagram shows a frog.

Which characteristic of living organisms is shown by the frog?

A growth
B movement
C nutrition
D reproduction
2 Which phylum does the organisms in the diagram belong to?

A annelids
B arthropods
C molluscs
D myriapods
3 The table shows some of the characteristics of four animals.
Which animal is a fish?

characteristics
animal fins fur scales KEY
A     = present
B     = absent
C   
D   

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4 The diagram shows a leaf.

Which feature shows that it is a dicotyledonous leaf?

A leaf blade
B midrib
C network veins
D parallel veins
5 The diagram shows a palisade cell.

1
2

Which descriptions relate to the labelled structures in the cell?

partially fully DNA present chlorophyll

permeable permeable present
A 1 2 3 4
B 2 1 4 3
C 1 2 4 3
D 2 1 3 4

6 Which features distinguish a plant cell from an animal cell?

A cell membrane and cytoplasm
B cell wall and vacuole
C chloroplast and no vacuole
D nucleus and no chloroplast

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7 Which are the functions of the xylem vessels?
A absorption and support
B absorption and translocation
C conduction and support
D conduction and translocation
8 The diagram shows an experiment using a piece of potato.

concentrated
glucose solution (X) potato

water (Y)

What will happen after a few hours?

A The level of X will decrease and the level of Y will decrease.
B The level of X will decrease and the level of Y will increase.
C The level of X will increase and the level of Y will decrease.
D The level of X will increase and the level of Y will increase.
9 A student carried out an experiment to investigate how much vitamin C an
orange contained. Which test should the student have used?
A Benedict’s
B biuret
C DCPIP
D iodine
10 A large field was split into four quarters. Each quarter was given different
concentrations of fertiliser, treatment A, B, C and D.
Then potatoes were grown on half of each treated quarter and wheat was grown
on the other half of each treated quarter.

Which treatment shows the largest crop of both potatoes and wheat?

treatment fertiliser in kg/hectare crop yield in tonnes/hectare

nitrates phosphates potassium potatoes wheat
A 0 0 0 8.47 1.69
B 96 0 0 8.30 3.68
C 0 77 107 16.63 2.04
D 96 77 107 38.57 6.60

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11 Ann experiences bleeding of her gums as the result of lack of a food substance.
Which of the following should be added to her diet?
A calcium
B iodine
C vitamin A
D vitamin C
12 The pie charts show the fat, carbohydrate and protein contents of four different
types of food.
KEY:
fat

carbohydrate

protein
A B C D

Which food is considered suitable for a growing child?

13 The diagram shows daily changes in concentration of carbon dioxide 1 metre

above a plant crop.

0.040

0.038

0.036

0.034
% CO2
0.032

0.030

0.028

0 2 4 6 8 10 12 14 16 18 20 22 24
noon midnight

Which process causes the low carbon dioxide concentration from 09:00 to 16:00?
A breathing
B osmosis
C respiration
D photosynthesis

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14 The diagram shows a stomata and some cells surrounding it.

A
B
C

Which part contains chromosomes?

15 A starch test is carried out on a leaf.

Why was the leaf boiled in alcohol?
A to dissolve the waxy cuticle
B to make the cells more permeable to iodine solution
C to remove the chlorophyll
D to stop the chemical reactions in the cells
16 Which feature is not characteristic of xerophytic plants?
A being succulent
B broad soft leaves
C sunken stomata
D hairy epidermis
17 The diagram shows a cross-section through a dicotyledonous root.
B

A
C

Which part A, B, C, or D is responsible for translocation?

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18 Which of the following will cause a person to develop natural immunity?
1 acquiring antibodies by injection

2 acquiring antibodies from the mother’s milk

3 being exposed to the disease as a child

4 being immunised against a disease

A 1 and 2
B 1 and 4
C 2 and 3
D 3 and 4
19 Blue cobalt (II) chloride paper was attached by transparent, waterproof tape to
the upper and lower surfaces of a freshly picked green leaf. The colour of the
paper changes on exposure to water.

leaf

cobalt (II) chloride paper

After 10 minutes the cobalt (II) chloride paper on the upper surface was still blue
and that on the lower surface had turned pink.

What is the best explanation of this difference?

A More transpiration had occurred from the lower surface.
B More transpiration had occurred from the upper surface.
C More photosynthesis had occurred in the cells near the upper surface.
D More photosynthesis had occurred in the cells near the lower surface.

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20 The diagram represents a group of body cells and some parts of the circulatory
system. The arrows show movement of fluids.

X
blood
capillary lymph vessel

cells

Which three substances are removed by the cells from the fluid at X?
A amino acids, glucose, oxygen
B carbon dioxide, amino acids, water
C oxygen, amino acids, carbon dioxide
D water, carbon dioxide, oxygen
21 How does exhaled air differ from inhaled air?
A It is drier.
B It has more oxygen.
C It has less carbon dioxide.
D It is warmer.
22 Where are excess amino acids broken down into urea?
A kidney
B liver
C small intestine
D stomach
23 The table shows the average amounts of urine and sweat that a person loses on
four different days. Assume that food and drink taken in is the same on all four days.
On which day is it the hottest?
day urine lost per day/dm3 sweat lost per day/dm3
A 1.500 0.5
B 2.000 0.0
C 0.375 2.0
D 0.700 1.1

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24 Which substances in the dialysis fluid found in kidney machines, should be at a
lower concentration than in the blood?
A amino acids and glucose
B glucose and salts
C glucose and urea
D salts and urea
25 Which of the following is always a voluntary action?
A blinking
B coughing
C sneezing
D walking
26 The table gives statements about nervous and hormonal control systems in
humans that are incorrect in many ways.
Which row shows correct features of both nervous control and hormonal control?
nervous control hormonal control
A extremely rapid originate from sense organs
B impulse is electrical travel through neurons
C originate from sense organs travel through blood
D slow impulse is chemical

27 Which changes occur when a restaurant cook walks from a very cold storeroom
into a warm kitchen?
sweating skin blood vessels
A decreases constrict
B decreases dilate
C increases constrict
D increases dilate

28 Which part of the flower produces male gametes?

A B

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29 Which part of the flower develops into a fruit?
B
A
C

30 The diagram shows the fetus inside the uterus.

A B

Which part is responsible for exchanging of substances between the mother and
the fetus blood?

31 Which diagram shows a methods of birth control that prevents a zygote from
implanting?

A B

C D

32 A certain type of waltzing mouse has a specific behaviour pattern. It spins

round as if chasing after its tail. A homozygous normal mouse was mated with
a homozygous waltzing mouse. The F1 mice were all normal. An F1 animal was
than crossed with a waltzer.
What would be the expected proportion of normal to waltzers in their offspring?
A 1 normal : 1 waltzer
B 3 normal : 1 waltzer
C all normal
D all waltzers

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33 What would be the possible blood group of a baby born to parents with blood
group AB and O?
A A only
B A or B
C B only
D O only
34 Mendel crossed pure breeding plants having green unripe pods with pure
breeding plants having yellow unripe pods. All the F1 plants had green pods.
He allowed these to self fertilise and collected 580 F2 plants.
How many of these would be expected to have green pods and how many
yellow pods?
number of number of
green pods yellow pods
A 139 441
B 285 295
C 440 140
D 580 0

35 The diagram shows cells involved in sexual reproduction in humans.

1 2

3 4

Which cells would have a diploid chromosome number?

A 1, 2, 5
B 1, 3, 4
C 2, 4, 5
D 3, 4, 5

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36 The diagram shows the nitrogen cycle.
nitrogen in the air A

nitrates in soil
D plant protein
B
animal protein C

ammonium compounds dead plants + animals

Which letter in the cycle involves the actions of bacteria?

37 The figure shows the changes in the size of yeast population.

D
number of C
yeast cells
B
A
time
Which shows the lag growth phase?

38 Which pyramid of numbers accurately represents a mahangu plant with five

grasshoppers feeding on it?

A B C D

39 In which form do animals obtain nitrogen from plants?

A amino acids
B ammonium
C nitrates
D nitrogen gas
40 Which of the following population pyramids represents the human population
which is most rapidly expanding?

age/years

A B C D

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