Question

Which is more common?A)Mesogamy B)Chalazogamy C)Porogamy D)Aporogamy

Answer 1

Pollen tube eventually reaches the micropyle of an ovule and for this purpose, it may follow one of the following three routes:
1. Porogamy- when the pollen tube enters the ovule through micropyle. It is common in most of the angiosperms.
2. Mesogamy- when the pollen tube enters through the integuments ( e.g Cucurbita) or through funiculus (e.g Pistacia).
3. Chalazogamy- when the pollen tube enters through the chalazal tissues e.g. Casuarina.

Pollen tube may follow any one of these three routes but porogamy is most common.
So, the correct answer is B.