Biology
Grade-7
Easy
Question
______________ aids in seed rupturing and transforms insoluble food into soluble form for transfer to the embryo.
- Seed germination
- Water
- Seed dormancy
- Fungus
- Embryo
Hint:
- Imbibition causes softening of seed coat so that it can rupture.
The correct answer is: Water
Water
- Water aids in rupturing of seeds and makes insoluble food soluble for transfer to embryo.
- Water enters in seed cells through imbibition.
- It causes rupturing of seed coat by making it swollen and soft .
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During ________________, the water and gas-resistant seed coat inhibits water intake and oxygen exchange.
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- During seed dormancy seed coat prevents it from the harsh conditions.
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If there is enough temperature but no water for the seed, then still the seed will be able to germinate
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Germination can sometimes come to a halt when the temperature rises above a certain point.
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- Water, oxygen, temperature and light , all the four things are important in germination of seed.
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After activation of enzymes in a seed, the metabolic phase begins; this phase I called ___________.
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The seed cell becomes metabolically active, elongates, and divides in the last stage of seed germination, giving rise to the ____________.
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