In genetics, the phenotype is:

the observable characteristics of an organism

an organism carrying two different alleles of a gene

an allele that shows in the phenotype even when only one copy is present

a sex cell carrying one copy of each gene

In a flower, what is the function of the sepal?

protecting the flower while it is still a bud

developing into the fruit after fertilisation

attracting insects to the flower

What is the main function of the chloroplast?

storing cell sap and keeping the cell turgid

digesting worn-out cell structures

The hormone antidiuretic hormone is responsible for:

increasing water reabsorption in the kidney

controlling the rate of metabolism

developing the female secondary sexual characteristics

preparing the body for vigorous action

Which of these illustrates comparative embryology?

the early embryos of a fish, a bird and a human being hard to tell apart

related but distinct finches on separate islands of one group

the wing of an insect and the wing of a bird doing the same job with different structures

the human appendix, reduced and no longer functional

West African Examinations Council

WASSCE Biology · Paper 1 — Objective

Multiple-choice. This is the paper the CBT simulator practises.

40 of 276 exam-style questions, written to the West African Examinations Council format and free to read. The answers are here too — what they do not tell you is how many you would get right with a clock running.

Sit this paper timed All WASSCE Biology papers

1. The transfer of pollen from the anther of a flower to the stigma of a flower on a different plant of the same species is called:

1. The transfer of pollen from the anther of a flower to the stigma of a flower on a different plant of the same species is called:

2. Which kind of evidence for evolution is illustrated by the wing of an insect and the wing of a bird doing the same job with different structures?

3. Gaseous exchange in a mammal takes place mainly at:

4. In genetics, the phenotype is:

5. Which structure excretes oxygen and water vapour from a green plant?

6. In a flower, what is the function of the sepal?

7. Which process returns nitrogen from the soil to the atmosphere?

8. A deficiency of which nutrient causes pellagra?

9. What is the main function of the chloroplast?

10. The end product of carbohydrate digestion in humans is

11. Which cell structure is responsible for controlling the activities of the cell?

12. The enzyme trypsin converts its substrate into:

13. The type of muscle found in the wall of the small intestine is:

14. The enzyme sucrase converts its substrate into:

15. Which part of a leaf is responsible for providing air spaces through which gases diffuse?

16. The hormone antidiuretic hormone is responsible for:

17. Which of these illustrates comparative embryology?

18. Which worker is associated with the laws of inheritance, worked out from breeding garden peas?

19. river blindness is transmitted to humans by:

20. The enzyme lipase converts its substrate into:

21. Which organism is the causative agent of yellow fever?

22. Which kind of evidence for evolution is illustrated by related but distinct finches on separate islands of one group?

23. Where in the body is the femur found?

24. Which of the following diseases is caused by a virus?

25. The vector of trypanosomiasis, also known as sleeping sickness, is the:

26. Which hormone is responsible for raising the blood glucose level?

27. Which type of joint permits rotation of one bone about another?

28. Which structure excretes urea, water and mineral salts?

29. Which group is characterised by two pairs of antennae and a hard chalky exoskeleton?

30. In a leaf, what is the function of the guard cell?

31. Which feature places an organism in the group Crustacea?

32. Which bone is found at the case enclosing the brain?

33. A shortage of potassium in a crop shows as:

34. A crop shows yellowing of the older leaves with stunted, spindly growth. Which element is it short of?

35. Anaerobic respiration in muscle produces:

36. The type of skeleton found in an earthworm is:

37. The tissue that conducts manufactured food in a flowering plant is the:

38. The theory that characteristics acquired by an organism during its lifetime can be passed to its offspring was proposed by:

39. Which cell structure is responsible for storing cell sap and keeping the cell turgid?

40. In flowering plants, fertilisation results in the ovule becoming the:

Reading these is not the same as sitting them.