TOPIC : REPRODUCTION SYSTEM IN FLOWERING PLANT
SECTION B
1. Diagram 1.1 shows a longitudinal section of a flower.
Figure 1.1
(a) State the function of the structure labeled P in Diagram 1.1.
| Structure | Function |
| P | |
[1 mark]
( b )
Diagram 1.2
(b) Mark Diagram 1.2 with letters:
(i) T : the structure that contains male gametes.
(1 mark)
(ii) U : the place where fertilisation occurs.
(1 mark)
(c) Mark using an arrow to show the movement of male gametes in the process of fertilization in Diagram 1.2
(1 mark)
(d) Based on your observation in Diagram 1.2:
(i) Identify the pollinating agent that needed to transfer the pollen grain.
__________________________________________________________
(1mark)
(ii) Give a reason to support your answer in (d) (i)
___________________________________________________________
(1 mark)
(e) Give two reasons how cross-pollination is useful in the field of agriculture.
1. __________________________________________________________
2. _________________________________________________________
(2 marks)
2. Diagram 2.1 shows the different types of pollination that occurs in flowering
plants.
P Q
Diagram 2.1
(a) (i) Based on Diagram 2.1, state the types of pollination of P ?
P : _____________________________________________________
(1 marks)
(ii) Give one reason for your answer in (a) (i).
__________________________________________________________
__________________________________________________________
(2 mark)
(iii) Which type of pollination is beneficial to agriculture.
___________________________________________________________
(1 mark)
(b) (i) Why do insects visit the flowers?
___________________________________________________________
(1 mark)
(ii) How do the insect help in the reproduction of plants?
__________________________________________________________
__________________________________________________________
(2 marks)
(c) Table 2.2 shows the characteristics of fruits by two papaya trees M and N.
| Plant M | Plant N |
| Small Less Sweet Thick flesh | Big Sweet Thin Flesh |
Table 2.2
(i) Give two characteristics of the fruit obtained from cross pollination of plant
M and N.
_________________________________________________________
_________________________________________________________
(2 marks)
(ii) Name one example other than the papaya plant that is used in the same
type of pollination as mentioned in (b) (i) above.
_________________________________________________________
(1 mark)
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