Science Revision 9A
- Created by: Callan
- Created on: 10-05-13 15:27
Other questions in this quiz
2. What does 'genetic information' mean?
- Sex chromosomes e.g. X or Y
- The instructions found in genes that control your characteristics.
- Information scientists have gathered whilst studying genes.
- The facts you know about genes.
3. How does a plant breeder make sure that only pollen from one flower pollinates another flower?
- They can't, arranged marriages aren't effective.
- They inject sulphur dioxide solution into the anthers.
- They put a plastic bag over the flower.
- They take it into a separate room without other flowers.
4. Changes in genes are called:
- Genetic Disease.
- Mutations.
- Puberty.
- Inheritance.
5. State one variation of pear trees and the environmental factor that causes it.
- Smaller leaves - not enough oxygen.
- Larger leaves - not enough light.
- Thicker roots - drought.
- Thicker trunk - Being on the side of a mountain.
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