Moderate

Both autogamy and geitonogamy are prevented in:

Correct answer: A. Papaya

  • A. Papaya
  • B. Cucumber
  • C. Castor
  • D. Maize

Explanation

Papaya is dioecious i.e. male and female occur in a separate plant so that it prevents both autogamy and geitonogamy (methods of self-pollination). Castor, maize, and cucumber have unisexual flowers but, they are monoecious (male and female flowers are present in the same plant). Hence autogamy will not occur in these plants but, geitonogamy can occur.

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