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MOUNT KENYA UNIVERSITY BBY 1214:

PLANT STRUCTURE AND FUNCTION

AUGUST 2018

CAT I

DIBEL

Answer all questions (40mks) 1. Identify the different types of leaves below.

(5mks)

2. Name the internal parts of a leaf.

(5mks)

3. Identify the following parts of a stem.

(3mks)

4. Discuss the different types of stem modifications.

(8mks)

5. Differentiate between a pollinator and a polleniser.

(2mks)

6. Discuss the methods of vegetative propagation.

(5mks)

7. Name the following flower arrangements bellow based on the position of the floral parts on the thalamus.

(4mks)

8. Examine the flowers of the maize plants and describe the flowers in terms of a) Whether they are unisexual or bisexual.

(1mk)

b) The type of pollination associated with flowers.

(1mk)

c) Whether diecious or monoecious.

(1mk)

9. Examine a fresh tomato and answer the following questions. a) What type of a fruit is it?

(1mks)

b) Examine a cross section of the tomato. How many ovaries formed the fruit?

(1mks)

c) Is any other floral part united with the ovary in forming the fruit? If yes name them. d) What is an accessory fruit?

(2mks) (1mk)...