Flashcards on Plant Reproduction
Plant Reproduction: A Comprehensive Student Guide
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Asexual reproduction
17 cards
Card 1
Question: What are common methods of asexual reproduction mentioned for improving crops?
Answer: Division, grafting, and using storage organs (bulbs, corms, tubers, and rhizomes).
Card 2
Question: How does asexual reproduction provide genetic stability in crops?
Answer: It produces clones identical to the parent so offspring show no genetic variation, preserving desirable traits.
Card 3
Question: How can mutations interact with asexual reproduction to improve crops?
Answer: A superior mutation in one plant can be fixed by repeated asexual reproduction so all offspring carry the improved trait.
Card 4
Question: Why would farmers choose a crop plant with bigger seeds, fruits, or tubers and propagate it asexually?
Answer: Because repeated asexual reproduction produces many plants all carrying that superior trait, improving the crop uniformly.
Card 5
Question: What is grafting and how does it improve fruit trees?
Answer: Grafting joins tissues from two plants (rootstock and scion) so each contributes favourable traits — e.g., rootstock provides disease resistance or ha
Card 6
Question: Give examples of crops where grafting has been used historically.
Answer: Apples, lemons, and pears.
Card 7
Question: How do strawberry runners (stolons) form new plants?
Answer: Stolons grow across the ground, form nodes that try to root; if roots succeed a daughter plant develops.
Card 8
Question: What is a bulb and how does it reproduce asexually?
Answer: A bulb (e.g., onion, daffodil) is swollen underground leaves that store food and develop lateral buds that grow into new plants.
Card 9
Question: What is a tuber and how does it give rise to new plants?
Answer: A tuber (e.g., potato) is an underground stem with axillary buds (eyes) that can develop into new plants using stored food.
Card 10
Question: What is a corm and which plants have them?
Answer: A corm is a rounded base of a stem from which axillary buds grow into new plants; crocus and gladioli have corms.