| Study the given figure of embryo sac in angiosperms and answer the questions that follows |
 |
| (iv) What does the labelled part A do at the entrance into ovule? |
A) It brings about opening of the pollen tube
B) It guides pollen tube from a synergid to egg
C) It helps in the entry of pollen tube into a synergid
D) It prevents entry of more than one pollen tube into the embryo sac.
Correct Answer: C
Solution :
[c] The synergids have special cellular thickenings at the micropylar tip called filiform apparatus. The function of the filiform apparatus is that it helps the pollen tubes to enter the ovule through synergids. This is an important process during fertilisation in the angiosperms. Thus, correct answer is option [c].
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