Question

6. The figure given below is a diagrammatic
representation of a part of the cross-section of the
root in the root hair zone. Study the same and then
answer the questions that follow:

(a) Name the parts indicated by guidelines 1 to 5.
(b) Is the root hair cell unicellular or multicellular?
(c) Explain what would happen to the root hair cell if
some fertilizer is added to the soil close to it.
(d) Name the process responsible for the entry of water
molecules from the soil into A, and then into A,
(e) What pressure is responsible for the movement of water
in the direction indicated by arrows?
(f) How is this pressure set up ?​

Answer 1

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Answer 2

(i) 1. Vacuole (containing cell sap)

2. Soil particles

3. Xylem vessel

4. Cortex cells

5. Vacuole in cortical cells

(ii) Root hair cell is unicellular

(iii) See diagram alongside.

(iv) Osmosis

(v) Osmotic pressure

(vi) This pressure is set up due to difference in osmotic gradient.