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Science · 2024 · 4 marks
CBSE 2024 · Region 5 · Set 1 · Q38
Pollination is an important process in sexual reproduction of plants. It is an essential process that facilitates fertilisation in plants.…
Pollination is an important process in sexual reproduction of plants. It is an essential process that facilitates fertilisation in plants. Pollinating agents can be wind, water, insects and birds. Several changes take place in the flower after the fertilization has taken place.
(a)
Write the main difference between self-pollination and cross-pollination.
(b)
Name the part of the flower which attracts insects for pollination. What happens to this part after fertilisation ?
(c)
(i)
Define fertilisation. What is the fate of ovules and the ovary in a flower after fertilisation?
OR
(ii)
In a germinating seed, which parts are known as future shoot and future root? Mention the function of cotyledon.
Marking-scheme solution
Self-pollination
Transfer of pollen grains from anther to the stigma of the same flower.
Petals, they dry and fall off.
Fusion of male and female gamete
Ovule - Seed,
Ovary - fruit
OR
(ii)
Future shoot - Plumule,
Future root - Radicle
Cotyledon - Stores food.
All How do Organisms Reproduce? questions2024 question paperNCERT solutions: How do Organisms Reproduce?Practice How do Organisms Reproduce? →
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CBSE Class 10 Science past-paper question from the 2024 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.