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Question

Give 2 advantages and disadvantages of self and cross pollination ? which one them is better give reason for ur answer

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Solution

Advantages of self pollination:
  • less chance of failure of pollination
  • less wastage of pollen grains
Disadvantages of self pollination:
  • weak progeny
  • no new varieties formed

Advantages of cross pollination:
  • healthy and strong offspring
  • new varieties with useful characters formed
Disadvantages of cross pollination:
  • pollen wastage is common
  • plant requires to spend energy to adopt devices to attract pollinators

Inspite of its disadvantages, nature still favours cross pollination. In fact plant develop numerous contrivances favouring cross pollination and preventing self pollination. The reason for supporting cross pollination is mainly due to the production of healthier offspring.

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