Question 4 - Past Year - 5 Mark Questions - Chapter 8 Class 10 - How do Organisms Reproduce?

Last updated at April 16, 2024 by Teachoo

Define pollination. Explain the different types of pollination. List two agents of pollination. How does suitable pollination lead to fertilization?

Answer:

(i) The transfer of pollen grains from the anther of a stamen to the stigma of a carpel is called pollination.

(ii)

Different types of pollination are

Self Pollination	Cross Pollination
When the pollen grains from the anther of a flower is transferred to the stigma of the same flower or another flower on the same plant, it is called self pollination.	When the pollen grains from the anther of a flower on a plant is transferred to the stigma of a flower on a similar plant, it is called cross pollination.

SELF POLLINATION - Teachoo.png

CROSS POLLINATION - Teachoo.png

(iii) Agents of pollination are:

(iv) Pollination leads to fertilisation by

Pollen grains reaching the stigma of the flower through the pollination process.
After that pollen tube develops from pollen grain.
The pollen grain slides down the pollen tube and enters the ovary where it meets the egg.
The male gamete present in the pollen grain fuses with the female gamete present in the ovule. Thus, fertilisation takes place.