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: 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:
Name the parts indicated by the guidelines 1 to 4.
Topic: Parts of the root hair zone
Answer
1 — ROOT HAIR CELL 2 — SOIL WATER 3 — XYLEM VESSEL 4 — CORTEX CELLS
Identify them by working from OUTSIDE INWARDS, which is also the path the water takes: SOIL WATER surrounds the root the ROOT HAIR CELL is the projecting outgrowth of an epidermal cell the CORTEX CELLS form the broad zone beneath the epidermis the XYLEM VESSEL lies at the centre, in the vascular cylinder
The full path of water: SOIL WATER → ROOT HAIR → EPIDERMIS → CORTEX → ENDODERMIS → XYLEM — and then up the stem as the ascent of sap.