MHT CET · BIOLOGY · STD 12 - 6. Plant Water Relation

Identify the correct sequence of path of water across the root.

A Epiblema \(\rightarrow\) cortical cells \(\rightarrow\) endodermis \(\rightarrow\) pericycle \(\rightarrow\) protoxylem
B Endodermis \(\rightarrow\) cortical cells \(\rightarrow\) epiblema \(\rightarrow\) pericycle \(\rightarrow\) protoxylem
C Epiblema \(\rightarrow\) protoxylem \(\rightarrow\) endodermis \(\rightarrow\) pericycle \(\rightarrow\) cortical cells
D Protoxylem \(\rightarrow\) pericycle \(\rightarrow\) endodermis \(\rightarrow\) epiblema \(\rightarrow\) cortical cells

Verified Solution

Answer & Solution

Correct Answer

(A) Epiblema \(\rightarrow\) cortical cells \(\rightarrow\) endodermis \(\rightarrow\) pericycle \(\rightarrow\) protoxylem

Step-by-step Solution

Detailed explanation

A gradient of suction pressure (DPD) is developed from cells of epiblema to the cortex of the root. Consequently, water moves rapidly across the root through loosely arranged living cells of cortex, followed by passage cells of endodermis (in monocot roots) and finally into the cell of pericycle. Protoxylem is in the proximity with pericycle.

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

Same subject

Explore more questions on app

From MHT CET

Explore more questions on app

	Column I		Column II
i.	Protandry	a.	Calotropis
ii.	Prepotency	b.	Tobacco
iii.	Self sterility	c.	Sunflower
iv.	Herkogamy	d.	Apple