Q13 of 21 Page 64

In the diagram given in Figure 12.2 label the parts marked (a), (b) and (c).

(a) – Pollen grain, (b) – Pollen tube, (c) – zygote formation

The diagram shows the fertilization process occurring in plants after pollination takes place. Fertilization is the process of fusion of male and female gametes to form a zygote.


More from this chapter

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11

Which type of pollination does the Figure 12.1 indicate?

 12

One morning as Paheli strolled in her garden she noticed many small plants which were not there a week ago. She wondered where they had come from as nobody had planted them there. Explain the reason for the growth of these plants.

 14

When you keep food items like bread and fruits outside for a long time especially during the rainy season, you will observe a cottony growth on them.

(a) What is this growth called?


(b) How does the growth take place?

 15

Group the seeds given in Figure12.3 (i) to (iii) according to their means of dispersion.

(a) Seed dispersed by wind


(b) Seed dispersed by water


(c) Seed dispersed by animal