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

Oxygen
- Seeds need oxygen for respiration.

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?