Answer: Seed development without fertilization.
- A Fertilization occurring without any pollen transfer
- B Seed development without fertilization
- C Cloning achieved through tissue culture techniques
- D Vegetative propagation using only stem cuttings
Correct answer: B. Seed development without fertilization
Explanation: Apomixis (plant parthenogenesis): seed/embryo development without fertilization. Produces genetically uniform plants. E.g., some grasses, dandelions.
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.
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