Biology
The three conditions necessary for germination of seeds are (tick the correct answer):
- Oxygen, suitable temperature and water.
- Good soil, water and air.
- Good soil, suitable temperature and light.
- Light, oxygen and temperature.
- Oxygen, carbon dioxide and light.
Answer
Oxygen, suitable temperature and water
Reason — Seeds need water for germination as most chemical reactions occur in water. Oxygen is required to oxidize the stored food and release energy required for the growth of the embryo. Suitable temperature is necessary for germination of seeds because enzymes are inactive at low temperatures and get destroyed at higher temperatures.
Related Questions
State whether the following statements are True or False.
- Some seeds have no cotyledons.
- Warmth is necessary for the germination of seed.
- All seed have two cotyledons.
- Oxygen is necessary for the germination of seed.
In the spaces provided below, draw labelled diagrams to show the three stages in the germination of any seed you have observed.
Complete Seed
Radicle Emerged
Plumule Emerged
State one function of the following:
- Radicle
- Cotyledons
- Endosperm
- Micropyle
Name the part of the seed from which the following are given out:
- Root
- Leaves