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Unisexuality of flowers prevents
[2008]
  • a)
    autogamy, but not geitonogamy
  • b)
    both geitonogamy and xenogamy
  • c)
    geitonogamy, but not xenogamy
  • d)
    autogamy and geitonogamy
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
Unisexuality of flowers prevents[2008]a)autogamy, but not geitonogamyb...
Unisexuality of flowers prevents. autogamy, but not geitonogamy. In self fertilisation , the male and female gametes are derived from the same individual. Among plants, self fertilization also called autogamy is common in many cultivated species, eg., wheat and oats. However, self fertilization is a form of inbreeding and does not allow for the mixing of genetic material; if it occurs over a number of generations it will result in offspring being less vigorous and productive than those resulting from cross fertilization. 
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Most Upvoted Answer
Unisexuality of flowers prevents[2008]a)autogamy, but not geitonogamyb...
Unisexuality of flowers prevents autogamy, but not geitonogamy

Autogamy refers to the process of self-fertilization in plants, where the pollen from a flower's own stamen fertilizes the ovules of the same flower. Geitonogamy, on the other hand, is a form of cross-fertilization where pollen from one flower is transferred to the stigma of another flower on the same plant.

Unisexuality of flowers refers to the fact that flowers of a plant are either male or female, and not both. This prevents autogamy as the male and female reproductive organs are separated in different flowers. However, geitonogamy can still occur as the male and female flowers are on the same plant.

Therefore, option A is correct as unisexuality of flowers prevents autogamy, but not geitonogamy.
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Community Answer
Unisexuality of flowers prevents[2008]a)autogamy, but not geitonogamyb...
Correct option is A.
because some plants which have female and male flower separately. like -maize
so here flower is unisexual but plant is not unisexual.
so in this case unisexuality prevent autogamy but not geitonogamy
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Unisexuality of flowers prevents[2008]a)autogamy, but not geitonogamyb)both geitonogamy and xenogamyc)geitonogamy, but not xenogamyd)autogamy and geitonogamyCorrect answer is option 'A'. Can you explain this answer?
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