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1. Figure 1 shows a section through the hinge joint at the elbow

a) (i) Name the structures labelled

(ii) State the function of each part labelled

b) (i) Name the muscle labelled (2 marks)

X :__________________________________________________

Y :__________________________________________________

(ii) Explain briefly the event occurs when flexion of forearm occur

___________________________________________________________

___________________________________________________________

___________________________________________________________

___________________________________________________________

(4 marks)

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2. Figure 2 shows a pathway of nerve impulses in the knee jerk reflex

a) (i) Name the neurones labelled (2 marks)

P :__________________________________________________

Q :__________________________________________________

(ii) State the function of each neurone labelled in a(i) (2 marks)

P :__________________________________________________

Q :__________________________________________________

b) (i) Define reflex action (2 marks)

___________________________________________________________

___________________________________________________________

(ii) State the characteristics of reflex action (2 marks)

___________________________________________________________

___________________________________________________________

(iii) Describe briefly what happen when a hand touches sharp needle

___________________________________________________________

___________________________________________________________

___________________________________________________________

___________________________________________________________

(4 marks)

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3. Figure 3 shows the process the formation of female gamete

a) Process P is the formation of the ovum in the ovary

(i) Name process P (1 mark)

________________________________________________________

(ii) Name each part labelled (3 marks)X :__________________________________________________

Y :__________________________________________________

Z :__________________________________________________

b) (i) State the process labelled A (1 mark)

__________________________________________________________

(ii) What is the number of chromosome of X? (1 mark)

___________________________________________________________

c) (i) Name process B (1 mark)

___________________________________________________________

(ii) State the importance of process B (3 marks)

___________________________________________________________

___________________________________________________________

___________________________________________________________

d) (i) State what happen to the polar body formed? (1 mark)___________________________________________________________

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4. Diagram shows the schematic diagram of a cross between green pod pea plant

and yellow pod pea plant.

a) (i) Name the cross shown by the diagram (1 mark)

___________________________________________________________

(ii) Name the part labelled

X :__________________________________________________

Y ;__________________________________________________

(2 marks)

b) (i) Define genotype (1 mark)

___________________________________________________________

(ii) Based on the diagram above, which genotype is dominant? (1 mark)

___________________________________________________________

(iii) State the phenotype ratio of F1 generation (1 mark)

__________________________________________________________

c) F1 generation is fertilised randomly

(i)State the phenotypic ratio of F2 generation (1 mark)

___________________________________________________________

(ii)Draw a schematic diagram to show self-pollination of F1 generation

(4 marks)

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5. The figure shows the type of blood

a) (i) Name the type of variation shown by the diagram above (1 mark)

___________________________________________________________

(ii) State the factor cause the variation stated in a(i) to occur (1 mark)

___________________________________________________________

(iii) Give another two examples of variation stated in a(i) (2 marks)

______________________________________________________________________________________________________________________

b)

(i) What type of mutation shown in the diagram? ( 1mark)

_____________________________________________________

(ii) Name the changes occur in the chromosome shown in the diagram

____________________________________________________

(1 mark)

(iii) Describe briefly how the changes occur (2 marks)

______________________________________________________

______________________________________________________

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c) (i) Name the syndrome shown by the karyotype above (1 mark)

___________________________________________________________

(ii) Explain the characteristics of the human which suffer from the

syndrome (2 marks)

___________________________________________________________

___________________________________________________________

(iii)Give another example of chromosomal mutation (1mark)

___________________________________________________________

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SECTION B (40 MARKS)

( ANWER ANY 2 QUESTIONS)

Figure A Figure B

6. a) Discuss the type of variation shown by the diagram (10 marks)

b) Compare and contrast the type of variation discuss in (a) (10 marks)

7.

a) Discuss secondary growth in the stems of dicotyledons and monocotyledon

plants (8 marks)

b) State the importance of secondary growth (4 marks)

c) Discuss the differences of secondary growth between dicotyledons and

monocotyledon plants (8 marks)

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8. a) Discuss the effects of different auxin concentration on plants (6 marks)

b) Describe the role of auxin in photropism (10 marks)

c) State the uses of hormones in agricultural (4 marks)

9. a) Discuss the transpiration in plants (10 marks)b) Describe the importance of transpiration. (10 marks)