Science Group
Explore subjects and practice MCQs
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Total MCQs
Science Group
Answer: Runners are horizontal creeping stems; new plants arise at the nodes of runners, as in strawberry.
Answer: Because asexual reproduction produces identical offspring with no genetic variation, the species cannot adapt easily to changing conditions.
Answer: Monocot embryos carry a single cotyledon, while dicot embryos have two cotyledons.
Answer: Ginger grows from an underground horizontal stem called a rhizome, which stores food and bears buds.
Answer: Sugarcane is propagated vegetatively by planting pieces of its stem (setts), each with buds.
Answer: Bulbs are short underground stems surrounded by fleshy leaves, as in onion and garlic.
Answer: In grafting, the scion is the stem part bearing buds that form the new shoot, while the stock supplies the root system.
Answer: In hypogeal germination the epicotyl elongates and pushes the plumule upward while the cotyledons stay below the soil.
Answer: In budding, a small outgrowth (bud) forms on the parent cell, grows and detaches as a new yeast cell.
Answer: A corm is a short, swollen underground stem that stores food and produces new plants, as in colocasia.
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.