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Form 4 Term 3 2022 Biology Paper 1 Exam Set 38 [PDF]

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Question 1

Name the organelle that performs each of the following functions in a cell
 (i) Protein synthesis
 (ii) Transport of cell secretions
Answer
(i) Ribosome
(ii) golgi apparatus/bodies
Question 2.

(a) Define the term ‘parthenocarpy’
(b) Name two plant growth hormones that promote parthenocarpy
Answer
(a) Fruit formation without fertalization
(b) 1. Auxins
  2. Gibberellins
Question 3

The diagram below shows a longitudinal section of mammalian skin

a) Name the parts labelled F and G
b) State one function of each of the parts labelled H and J
Answer
a)  F - Cornified layer
G - Malpighian layer
b) H - Contracts and relax to raise and lower hair follicles
J - Storage of fats
Question 4

(a) State two characteristics used to divide the phylum Arthropoda into classes
(b) Name the class with the largest number of individuals in the phylum Arthropoda
Answer
(a) - Number of body parts
  - Number of legs
(b) insecta
Question 5

The diagram below represents a longitudinal section of a fruit

(i) Identify the mode of dispersal
(ii) Describe two adaptations of the fruit to its mode of dispersal
Answer
(i) Water
(ii) - Has tough seed coat which is impermeable to Water
  - Has fibrous mesocarp which stores air to enable it to float
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- Form 4 Term 3 2022 Biology Paper 1 Exam Set 38 [PDF]