- A Two separate embryos formed from two genetically independent egg cells within the ovule
- B One embryo (from egg + sperm) and endosperm (from central cell + second sperm)
- C One embryo alone, with the second sperm degenerating without ever being used
- D Two separate zygotes that later fuse together into a single diploid embryo
Correct answer: B. One embryo (from egg + sperm) and endosperm (from central cell + second sperm)
Explanation: Double fertilization: sperm 1 + egg = 2n zygote (embryo); sperm 2 + two polar nuclei = 3n primary endosperm nucleus (nutritive endosperm).
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 →