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Civil and Mechanical

w Biology 17

Written by Admin December 9, 2025December 9, 2025

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Question 1 of 49

1. Question

Soil permeability refers to

how easily water passes through the soil
Correct Incorrect Correct answer

the proportion of air in the soil
Correct Incorrect Correct answer

the proportion of water the soil holds
Correct Incorrect Correct answer

how well water rises up the soil
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Question 2 of 49

2. Question

The type of variation illustrated above is

continuous variation
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discontinuous variation
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morphological variation
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environmental variation
Correct Incorrect Correct answer

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Question 3 of 49

3. Question

Which of the following statements is true about mutation?

Phenotype is not involved
Correct Incorrect Correct answer

Genotype is not involved
Correct Incorrect Correct answer

Artificial induction is not possible
Correct Incorrect Correct answer

Genotype is involved
Correct Incorrect Correct answer

Correct

Incorrect
Question 4 of 49

4. Question

Which of the following materials is not easily biodegradable?

Polythene bag
Correct Incorrect Correct answer

Cotton bag
Correct Incorrect Correct answer

Hides and Skin bag
Correct Incorrect Correct answer

Paper bag
Correct Incorrect Correct answer

Correct

Incorrect
Question 5 of 49

5. Question

The diagram above shows the dentition of an organism. What organism is this?

rabbit
Correct Incorrect Correct answer

cat
Correct Incorrect Correct answer

frog
Correct Incorrect Correct answer

man
Correct Incorrect Correct answer

Correct

Incorrect
Question 6 of 49

6. Question

The teeth which are absent in the young of the organism whose dentition is shown above is labelled

W
Correct Incorrect Correct answer

X
Correct Incorrect Correct answer

Y
Correct Incorrect Correct answer

Z
Correct Incorrect Correct answer

Correct

Incorrect
Question 7 of 49

7. Question

A population which exceeds its carrying capacity and then collapses is represented graphically by a

bell-shaped curve
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linear curve
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sigmoid curve
Correct Incorrect Correct answer

skewed curve
Correct Incorrect Correct answer

Correct

Incorrect
Question 8 of 49

8. Question

An apple plant can produce sexually and asexually and it has 40 chromosomes in its leaf cells. How many chromosomes would be in each gamete and somatic cell? Option 1 20 chromosomes in the gametes and 10 in the somatic cells

20 chromosomes in the gametes and 10 in the somatic cells
Correct Incorrect Correct answer

40 chromosomes in the gametes and 20 in the somatic cells
Correct Incorrect Correct answer

20 chromosomes in the gametes and 40 in the somatic cell
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40 chromosomes in the gametes and 40 in the somatic cells
Correct Incorrect Correct answer

Correct

Incorrect
Question 9 of 49

9. Question

The number of individuals that the environment can support over a long period of time is its

growth rate
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total capacity
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population capacity
Correct Incorrect Correct answer

carrying capacity
Correct Incorrect Correct answer

Correct

Incorrect
Question 10 of 49

10. Question

The complex energy-rich organic matter which living organisms need for life is

water
Correct Incorrect Correct answer

air
Correct Incorrect Correct answer

food
Correct Incorrect Correct answer

mineral salts
Correct Incorrect Correct answer

Correct

Incorrect
Question 11 of 49

11. Question

Which of the following pyramids gives the most accurate picture of the relationships between at the various trophic levels in a food chain? A pyramid of

numbers
Correct Incorrect Correct answer

energy
Correct Incorrect Correct answer

biomass
Correct Incorrect Correct answer

size
Correct Incorrect Correct answer

Correct

Incorrect
Question 12 of 49

12. Question

Which of the following function is associated with calcium in plants? Formation of

cell wall
Correct Incorrect Correct answer

ribosomes
Correct Incorrect Correct answer

proteins
Correct Incorrect Correct answer

cell membrane
Correct Incorrect Correct answer

Correct

Incorrect
Question 13 of 49

13. Question

Which of the following practices is not used in conserving water?

Afforestation
Correct Incorrect Correct answer

Damming
Correct Incorrect Correct answer

Deforestation
Correct Incorrect Correct answer

Reforestation
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Correct

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Question 14 of 49

14. Question

Which of the following cell organelles is the site for the production of ATP?

Lysosome
Correct Incorrect Correct answer

Nucleus
Correct Incorrect Correct answer

Mitochondrion
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Ribosome
Correct Incorrect Correct answer

Correct

Incorrect
Question 15 of 49

15. Question

The diagram above is an illustration of the urinary tubule in a mammal. Which of the following substances is found in the part labelled II only?

Lipid
Correct Incorrect Correct answer

Glucose
Correct Incorrect Correct answer

Urea
Correct Incorrect Correct answer

Uric acid
Correct Incorrect Correct answer

Correct

Incorrect
Question 16 of 49

16. Question

When viewing an object that is close to the human eye, the

eye lens becomes thin
Correct Incorrect Correct answer

ciliary muscles relax
Correct Incorrect Correct answer

suspensory lens become taut
Correct Incorrect Correct answer

eye lens becomes fat
Correct Incorrect Correct answer

Correct

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Question 17 of 49

17. Question

The organism that can carry out both autotropic and heterotrophic modes of nutritions is

Chlamydomonas
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Eudorina
Correct Incorrect Correct answer

Euglena
Correct Incorrect Correct answer

Spirogyra
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Correct

Incorrect
Question 18 of 49

18. Question

The diagrams below show the dentition of an organism. The function of the teeth labelled X is for

biting and grasping
Correct Incorrect Correct answer

chewing and grinding
Correct Incorrect Correct answer

tearing and grasping
Correct Incorrect Correct answer

chewing and tearing
Correct Incorrect Correct answer

Correct

Incorrect
Question 19 of 49

19. Question

A good site for secondary succession would be

a sand dune
Correct Incorrect Correct answer

a bare rock
Correct Incorrect Correct answer

a land that has just had forest fire
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a stretch of barren land
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Correct

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Question 20 of 49

20. Question

Which of the labelled parts of the diagram of the part of the human skeleton articulates with the head of the trochlea to form a hinge joint?

I
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II
Correct Incorrect Correct answer

III
Correct Incorrect Correct answer

IV
Correct Incorrect Correct answer

Correct

Incorrect
Question 21 of 49

21. Question

Assuming that A is the gene for normal skin color and is dominant, while a is the gene for albinism and its recessive, what is the likely genotype of the couple which had 50% normal and 50% albino offspring? Option 1 AA, aa

Aa, aa
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AA, Aa
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AA,AA
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Aa,Aa
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Correct

Incorrect
Question 22 of 49

22. Question

The natural dwelling place of an organism is called its

ecological niche
Correct Incorrect Correct answer

habitat
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population
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environment
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Correct

Incorrect
Question 23 of 49

23. Question

Which of the following groups of organisms do not have members that can be called autotrophs?

Protists
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Mosses
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Chlorophyta
Correct Incorrect Correct answer

Fungi
Correct Incorrect Correct answer

Correct

Incorrect
Question 24 of 49

24. Question

Deamination of amino acids in the liver produces

blood sugar
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glycogen
Correct Incorrect Correct answer

bile
Correct Incorrect Correct answer

urea
Correct Incorrect Correct answer

Correct

Incorrect
Question 25 of 49

25. Question

The diagram above is an illustration of the urinary tubule in a mammal. Which of the following substances is greater in concentration in the part labelled IV when compared to that part labelled I?

Lipid
Correct Incorrect Correct answer

Glucose
Correct Incorrect Correct answer

Urea
Correct Incorrect Correct answer

Uric acid
Correct Incorrect Correct answer

Correct

Incorrect
Question 26 of 49

26. Question

The structural similarities in Paramecium and Euglena are in the

shape of locomotory organs
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blunt anterior and pointed posterior
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presence of micro and mega nuclei in both
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presence of anterior and posterior contractile vacuoles
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Correct

Incorrect
Question 27 of 49

27. Question

The diagram above illustrates the transverse section of a

monocotyledonous root
Correct Incorrect Correct answer

dicotyledonous stem
Correct Incorrect Correct answer

monocotyledonous stem
Correct Incorrect Correct answer

dicotyledonous root
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Correct

Incorrect
Question 28 of 49

28. Question

The gradual cumulative, adaptive and heritable changes in an organism over a long period of time resulting in new species is called

adaptation
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survival
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organic evolution
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interspecific competition
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Correct

Incorrect
Question 29 of 49

29. Question

Which of the following pairs of organisms is in a mutualistic relationship?

Hydra and Sea anemone
Correct Incorrect Correct answer

Hermit crab and Sea anemone
Correct Incorrect Correct answer

Dodder plant and Cocoa plant
Correct Incorrect Correct answer

Mistletoe and Kolanut
Correct Incorrect Correct answer

Correct

Incorrect
Question 30 of 49

30. Question

Which of the following characters is not a morphological variation?

shape of the nose
Correct Incorrect Correct answer

colour of skin
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colour of hair
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tongue rolling
Correct Incorrect Correct answer

Correct

Incorrect
Question 31 of 49

31. Question

Which of the following actions does not occur during exhalation in man?

Thoracic cavity decreases in volume
Correct Incorrect Correct answer

Diaphragm flattens
Correct Incorrect Correct answer

Ribs move down and in
Correct Incorrect Correct answer

Air pressure increases in the thoracic cavity
Correct Incorrect Correct answer

Correct

Incorrect
Question 32 of 49

32. Question

Which of the following is NOT characteristic of social insects?

All members are identical
Correct Incorrect Correct answer

There is division of labour
Correct Incorrect Correct answer

The members dwell in the same habitat
Correct Incorrect Correct answer

Some members protect the queen
Correct Incorrect Correct answer

Correct

Incorrect
Question 33 of 49

33. Question

Which of the following organisms cannot exist freely on its own?

Chlamydomonas
Correct Incorrect Correct answer

Amoeba
Correct Incorrect Correct answer

Paramecium
Correct Incorrect Correct answer

Plasmodium
Correct Incorrect Correct answer

Correct

Incorrect
Question 34 of 49

34. Question

The diagram above illustrates a part of the human skeleton. The labelled part that provides surface for the attachment of the triceps is

I
Correct Incorrect Correct answer

II
Correct Incorrect Correct answer

III
Correct Incorrect Correct answer

IV
Correct Incorrect Correct answer

Correct

Incorrect
Question 35 of 49

35. Question

The diagram above is an illustration of the urinary tubule in a mammal. The part which contains lowest concentration of urea is labelled

I
Correct Incorrect Correct answer

II
Correct Incorrect Correct answer

III
Correct Incorrect Correct answer

IV
Correct Incorrect Correct answer

Correct

Incorrect
Question 36 of 49

36. Question

Which of the following groups of animals do not possess a nervous system?

Porifera
Correct Incorrect Correct answer

Cnidaria
Correct Incorrect Correct answer

Platyheminthes
Correct Incorrect Correct answer

Nematoda
Correct Incorrect Correct answer

Correct

Incorrect
Question 37 of 49

37. Question

Which of the following glands also serves as an exocrine gland?

Ovary
Correct Incorrect Correct answer

Pancreas
Correct Incorrect Correct answer

Adrenal
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Thyroid
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Correct

Incorrect
Question 38 of 49

38. Question

The diagram above is an illustration of the human sperm. The part labelled I is the

acrosome
Correct Incorrect Correct answer

nucleus
Correct Incorrect Correct answer

mitochondrion
Correct Incorrect Correct answer

tail
Correct Incorrect Correct answer

Correct

Incorrect
Question 39 of 49

39. Question

The establishment of game reserves and parks is a method of

conserving natural resources
Correct Incorrect Correct answer

cultivating game
Correct Incorrect Correct answer

controlling pollution
Correct Incorrect Correct answer

cultural awareness
Correct Incorrect Correct answer

Correct

Incorrect
Question 40 of 49

40. Question

Which of the following ecological factors will result in food shortage?

Drought
Correct Incorrect Correct answer

Low rate of reproduction
Correct Incorrect Correct answer

Emigration
Correct Incorrect Correct answer

Topography
Correct Incorrect Correct answer

Correct

Incorrect
Question 41 of 49

41. Question

Which of the following types of placentation is not common amongst syncarpous pistils?

Marginal
Correct Incorrect Correct answer

Axile
Correct Incorrect Correct answer

Parietal
Correct Incorrect Correct answer

Free central
Correct Incorrect Correct answer

Correct

Incorrect
Question 42 of 49

42. Question

An example of osmosis in plants is the

movement of water through the xylem
Correct Incorrect Correct answer

loss of water vapour from the stomata
Correct Incorrect Correct answer

translocation of food through the phloem
Correct Incorrect Correct answer

absorption of water from the soil by the root
Correct Incorrect Correct answer

Correct

Incorrect
Question 43 of 49

43. Question

In the diagram of the human sperm above, the function of the part labelled II is to

fuse the ovum during fertilization
Correct Incorrect Correct answer

generate the energy for the sperm to swim to the fallopian tube
Correct Incorrect Correct answer

help the sperm to swim forward
Correct Incorrect Correct answer

dissolve the membrane of the egg during fertilization
Correct Incorrect Correct answer

Correct

Incorrect
Question 44 of 49

44. Question

Which of the following processes are associated with photosynthesis? I. Energy from sunlight is absorbed II. Carbon dioxide is evolved III. Oxygen is given off IV. Glucose is synthesized

I and II only
Correct Incorrect Correct answer

I, II and IV only
Correct Incorrect Correct answer

I, III and IV only
Correct Incorrect Correct answer

I, II, III and IV
Correct Incorrect Correct answer

Correct

Incorrect
Question 45 of 49

45. Question

Which of the following resources cannot be renewed?

Air
Correct Incorrect Correct answer

Petroleum
Correct Incorrect Correct answer

Food crop
Correct Incorrect Correct answer

Soil
Correct Incorrect Correct answer

Correct

Incorrect
Question 46 of 49

46. Question

The diagram above illustrates a part of the human skeleton. It represents the bones of the

upper arm
Correct Incorrect Correct answer

lower arm
Correct Incorrect Correct answer

upper leg
Correct Incorrect Correct answer

lower leg
Correct Incorrect Correct answer

Correct

Incorrect
Question 47 of 49

47. Question

Which of the following sequences is the correct route of the transmission of impulses along a reflex arc?

Receptor→sensoryneuron→synapse→intermediateneuron→synapse→motorneuron →effector Receptor→sensoryneuron→synapse→intermediateneuron→synapse→motorneuron →effector
Correct Incorrect Correct answer

Receptor→motorneuron→synapse→intermediateneuron→synapse→sensoryneuron →effector Receptor→motorneuron→synapse→intermediateneuron→synapse→sensoryneuron →effector
Correct Incorrect Correct answer

Effector→intermediateneuron→synapse→motorneuron→synapse→sensoryneuron→ receptor Effector→intermediateneuron→synapse→motorneuron→synapse→sensoryneuron→ receptor
Correct Incorrect Correct answer

Effector→motorneuron→synapse→sensoryneuron→synapse→intermediateneuron→ receptor Effector→motorneuron→synapse→sensoryneuron→synapse→intermediateneuron→ receptor
Correct Incorrect Correct answer

Correct

Incorrect
Question 48 of 49

48. Question

One of the structural adaptations of mammals for movement on land is the development of the

hollow bones
Correct Incorrect Correct answer

pentadactyl limb
Correct Incorrect Correct answer

fused thoracic bones
Correct Incorrect Correct answer

streamlined body
Correct Incorrect Correct answer

Correct

Incorrect
Question 49 of 49

49. Question

Which of the following statements is not associated with pyramids of energy?

Efficiency of energy transfer between trophic levels can be studied
Correct Incorrect Correct answer

Comparisons of pyramids for different ecosystems can be made
Correct Incorrect Correct answer

More accurate comparisons of trophic levels
Correct Incorrect Correct answer

Representation of numbers of organisms at different trophic levels
Correct Incorrect Correct answer

Correct

Incorrect

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