Question

Give some examples of Mesogamy in Embryo Sac

Answer 1

Mesogamy : The pollen tube enters the ovule through its middle part i.e., through ... (3 ) Entry of pollen tube into embryo sac : The pollen tube enters the embryo sac only from the 

Answer 2

e.g., Casuarina, Juglans, Betula, etc. It was first observed by Treub (1981) in Casuarina. (iii) Mesogamy : The pollen tube enters the ovule through its middle part i.e., through integument (e.g., Cucurbita, Populus) or through funicle (e.g., Pistacia).

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