A) Carpel is a part of androecium.
B) Secondary nuclei may form a diploid polar nucleus prior to fertilization.
C) Synergids have filiform apparatus that guides the entry of pollen tube into the nucellus.
D) All of these
Correct Answer: D
Solution :
Carpel is a part of gynoecium. Polar nuclei fuse to form diploid secondary nucleus. Synergids guide the entry of pollen tube that has already entered nucellus, into the embryo sac.
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