Reproduction in OrganismHard
Question
Sperm of pollen tube through micropyle is
Options
A.base pairing of their DNA and RNA
B.formation of hydrogen bonds
C.mutual attration due to differences in electrical charges
D.attraction of their protoplasts
Solution
The movement of pollen tube towards the embryo sac is due to chemotactic attraction by the egg cell. The chemical chemical by the filiform apparatus of synergids the pollen tube wall and releases the male gametes. Certain chemicals are secreted by ovule or egg wall which attracts the male gamete or sperm. Thus, attraction of the protoplast of sperm and egg nuclei leads to their fusion, resulring into zygote.
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