A) It helps in the entry of pollen tube into a synergid
B) It prevents entry of more than one pollen tube into the embryo sac
C) It brings about opening of the pollen tube
D) It guides pollen tube from a synergid to egg
Correct Answer: D
Solution :
Synergid cells are characterized by the presence of finger-like projections called filiform apparatus attached to their upper wall at micropyler end. This filiform apparatus is known to attract and guide the pollen tube.
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