The root: types, systems and internal structure
Answers are for parents and teachers.
1
Draw taproot and fibrous systems side by side and give 3 plants for each.
Taproot: cotton, chickpea, bean. Fibrous: wheat, barley, maize.
2
Draw a longitudinal section of a young root and name 5 parts.
Root cap, division, growth, absorption and conducting zones.
3
What shows that a root hair is a single cell? Write 2–3 sentences.
It is an outgrowth of one surface cell; under a microscope it looks like a single long cell with one nucleus.
4
If a root hair lives 12 days, how many generations of hairs replace each other in 60 days? (60 : 12)
5
5
Why do farmers hoe vegetable crops? Explain from the root’s point of view.
The soil loosens and air reaches the roots, so they breathe and absorb water well; weeds are removed too.