Germination

Biology: Cambridge International GCSE Supplement, topic 16.3.4

Germination

After fertilisation, seeds need certain environmental conditions in order to germinate (sprout roots and shoots):

Water

Water

  • Seeds are often dehydrated, so need water to rehydrate to start germination, but not too much water as they might rot.
Oxygen

Oxygen

  • Seeds need oxygen for respiration.
Suitable temperature

Suitable temperature

  • Seeds need to be a suitable temperature so that their enzymes can work well.

Test yourself on Germination

  • Which of these is not needed for seeds to germinate?

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