Science Group
Explore subjects and practice MCQs
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1,000
Total MCQs
Unit-9 Plant Reproduction
Answer: The stamen is the male reproductive organ of a flower; it consists of an anther and a filament.
Answer: Colocasia (arum) propagates through a corm, a short thickened underground stem that bears buds.
Answer: The pistil is the female reproductive part of a flower, composed of the stigma, style and ovary.
Answer: The 'eyes' of a potato are buds present on the tuber that can grow into new shoots.
Answer: Pollen grains are produced in the anther, the top part of the stamen.
Answer: Self-pollination transfers pollen to the stigma of the same flower or to another flower of the same plant.
Answer: Pollination is the transfer of pollen grains from the anther to the stigma of a flower.
Answer: The egg cell (female gamete) is present inside the ovule, which is enclosed within the ovary.
Answer: Cross-pollination brings gametes from two different plants, producing offspring with greater genetic variation.
Answer: Self-pollination involves the same plant only, i.e., the same flower or a different flower of the same plant.
Answer: Wind-pollinated flowers are small and inconspicuous because they do not need to attract insects.
Answer: The stigma is the sticky top of the pistil that catches and holds pollen grains.
Answer: In double fertilization, one male gamete fuses with the egg and the other with the polar nuclei to form endosperm.
Answer: Sepals are the outermost green parts of a flower that protect the developing bud.
Answer: Wind-pollinated plants produce light, dry pollen so that wind can carry it easily.
Answer: The pollen tube grows through the style and ovary and delivers the male gametes to the ovule.
Answer: Fertilization is the fusion of a male gamete with a female gamete to form a zygote.
Answer: Dichogamy is the condition where stamens and stigma mature at different times, preventing self-pollination.
Answer: After fertilization, the ovary enlarges and develops into the fruit.
Answer: The ovary wall thickens after fertilization and becomes the pericarp (fruit wall).