Plants and fungi
Answers are for parents and teachers.
1
Write three vegetative organs of higher plants and their functions.
Root absorbs water and salts; stem transports and supports; leaf carries out photosynthesis.
2
Give two examples each of the useful and harmful sides of fungi.
Useful: yeast (bread), Penicillium (antibiotic), mycorrhiza. Harmful: rust, wilt, mould on food.
3
Why are green plants called “primary producers” in the biosphere?
Using solar energy they make organic matter from inorganic substances and supply food for other organisms.
4
What do the fungus and alga each do in a lichen?
The alga photosynthesises and provides organic matter; the fungus provides water, salts and protection.
5
Why does keeping dough in a warm place speed up the yeast?
At a warm temperature yeast cells are more active and break sugar down faster; at too high a temperature they die.