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An Intiative by Sri Chaitanya
a
allow the entry of pollen tube for fertilization
b
promote the maturation of fruit.
c
help in the formation of parthenocarpic fruits
d
attaching the ovule to the ovary wall
answer is A.
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Detailed Solution
Porogamy is the phenomenon of the entry of pollen tube into the ovule through micropyle before fertilization. The micropyle remains as a small pore in the seed coat. This facilitates entry of O2 and water into the seed during germination after fertilization.