Check sibling questions

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: 

  • Wind
  • Water
  • Insects
  • Animals

(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.

Transcript

Self Pollination Cross Pollination

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CA Maninder Singh

CA Maninder Singh is a Chartered Accountant for the past 12 years and a teacher from the past 16 years. He teaches Science, Economics, Accounting and English at Teachoo