Answer: Guide the pollen tube into the embryo sac.
- A Anchor the antipodal cells
- B Supply stored starch to the developing endosperm
- C Guide the pollen tube into the embryo sac
- D Secrete nectar for pollinators
Correct answer: C. Guide the pollen tube into the embryo sac
Explanation: The filiform apparatus of the synergids guides the entry of the pollen tube into the embryo sac.
Double fertilisation in angiosperms: one male gamete fuses with the egg to form the diploid zygote (syngamy), while the second fuses with the two polar nuclei to form the triploid primary endosperm nucleus (triple fusion). Image: Triploid, CC BY 3.0, via Wikimedia Commons.
Concept context
Flower structure, pollination, double fertilization, and seed/fruit development - the highest-scoring Class 12 biology chapter in NEET.
Read the full Sexual Reproduction in Flowering Plants notes →