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
(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
(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
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
- 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
(ii) - Has tough seed coat which is impermeable to Water
- Has fibrous mesocarp which stores air to enable it to float