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Question

Explain what is porogamy , mesogamy and chalazogamy with suitable diagram.

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Solution

During the entry of the pollen tube into the ovary through the style (after pollination), when the pollen tube enters through the micropylar end, it's called porogamy; when it enters through the Chalazal end, it's called chalazogamy; when it enters through the integuments, it's called mesogamy

  • Porogamy is the process of fertilization of a seed plant involving the passage of the pollen tube into the ovule by the micropyle
  • The process of fertilization in which the pollen tube penetrates to the embryo sac through the tissue of the chalaza is called chalazogamy.


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