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1. The diagram shows transverse sections from the root and the stem of a plant.

2. After vigorous muscular exercise, which of the following blood vessels contains more

hydrogen carbonate ions (bicarbonate ions) in the plasma?

A. Aorta C. Renal artery

B. Hepatic artery D. vena cava

3.

4. When the right atrium (auricle) contracts, blood flows from the right atrium into the:

A. Aorta C. pulmonary vein

B. Left atrium D. right ventricle

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5. The diagram shows the liver and its blood supply.

6. During the beating of the heart, in which region will the highest pressure develop?

A. Left atrium C. right atrium

B. Left ventricle D. right ventricle

7. The diagram represents blood flow through the human body.

At which stages does the blood

contain the most oxygen?

A. 1 and 2

B. 2 and 3

C. 3 and 4

D. 4 and 1

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8. The diagram shows a section through the heart.

While chambers X and Y are emptying of blood, which valves are open and which are

closed?

9. Which substance has the same concentration in dialysis fluid as in blood?

A. Glucose B. Protein C. salts D. urea

10. Which diagram shows how light from a distant object is focused on the retina to form a

clear image?

11. In which part of the flower does fertilization occur?

A. Anther C. stigma

B. Ovule D. style

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12. The diagram represents the liver, kidney and some associated blood vessels.

In which vessel will the blood contain the lowest concentration of urea?

13. The graph shows changes in a person’s body temperature plotted against time.

14. What is controlled by the medulla in the brain?

A. Balance B. breathing C. memory D. vision

15. Most wind- pollinated flowers have

A. A strong smell C. large nectaries

B. Bright coloured petals D. long projecting stigmas

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16. The diagram shows a bone from the forelimb (arm). One end of the bone has been

replaced with a metal cap.

17. When a person is frightened, which substance increases the blood sugar levels?

A. Adrenaline B. carbon dioxide C. insulin D. lactic acid

18. The diagrams show four different fruits.

19. In mammals, where is urea formed?

A. Blood B. gall bladder C. kidney D. liver

20. Which flower structure produces pollen?

A. Anther C. Petal

B. Carpel D. Stigma

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21. Which of these four mechanisms that lower the body temperature is the slowest to

occur?

A. Dilation of surface capillaries

B. Relaxation of hair erector muscles

C. Secretion of sweat

D. Thinning subcutaneous fat layer

22. The diagram shows the bones and muscles of the limb.

Which structures and functions are used in the straightening of the forelimb at the elbow

joint?

23. What decreases as a result of adrenaline secretion?

A. Blood sugar level C. heart rate

B. Digestive activity D. size of the pupils of the eyes

24. What controls the amount of light entering the human eye?

A. Aqueous humour C. Cornea

B. Ciliary muscles D. Iris

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25. The circles represent the diameter of the blood vessels in the surface of the skin as the

body temperature changes.

Which shows the diameter of the blood vessels after a decrease and after an increase

in body temperature?

26. What passes through the membranes of a kidney machine?

A. Protein and red blood cells C. water and protein

B. Urea and red blood cells D. water and urea

27. The diagram shows the carpel of a flower soon after pollination.

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28. The diagram shows a section through skin.

What happens if the body temperature starts to fall below normal?

29. The diagrams show two kinds of fruit.

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30. What passes down a pollen tube after pollination?

A. Female nucleus C. ovule

B. male nucleus D. pollen grain

31. The diagram shows a reflex arc in which a bee sting causes the arm to be moved

quickly.

If the relay neurone at Q is damaged, how will the transmission of nerve impulses in the

reflex arc be affected?

A. They cannot pass from P to Q C. They cannot pass from Q to P

B. They cannot pass from P to R D. They cannot pass from R to Q

32. A germinating seed is soaked in blue dye, which becomes colourless in tissues that are

actively respiring.

What will be the appearance of the cotyledons, plumule and radilce?

33. From which of the following is urea formed?

A. Fat C. Protein

B. Glycerol D. starch

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34. The diagram shows a section through the brain and part of the spinal cord.

Which row correctly identifies the cerebral hemisphere, cerebellum, medulla and

pituitary gland?

35. Which is not controlled directly by the nervous system?

A. Blood glucose concentration C. heart rate

B. Dilation of the blood vessels D. pupil diameter in the eye

36.

37. Where are hormones destroyed?

A. Adrenal glands

B. Body muscles

C. Liver

D. Kidney

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38. The diagram represents a blood capillary with an adjacent cell. The arrows represent

the transfer of substances between the capillary and the cell.

39. The diagram shows part of a flower at the time pollination.

40. Which statement correctly describes advantages or disadvantages of self-pollination to

a plant?

A. It needs a lot of pollen but can happen when a plant is on its own.

B. It needs little pollen but there is a high chance of pollination.

C. It needs no agents to transfer pollen but pollination is unlikely.

D. It needs two plants of the same species but there is little variation in the offspring.