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Absorption of Water

From the diag...

Question

From the diagram given below, choose the most appropriate option.

A

A = Xylem, B = pericycle, C = Cortex

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B

A = Phloem, B = pericycle, C = Cortex

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C

A = Phloem, B = Endodermis, C = Cortex

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D

A = Xylem, B = pericycle, C = Protoxylem

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Solution

The correct option is C
A = Phloem, B = Endodermis, C = Cortex

A = Phloem

B = Endodermis

C = Cortex

The diagram shows the passage of water through root hair. The endodermis is followed by pericycle and then phloem are present in patches. The rigion in between endodermis and epiblema is cortex.

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Q. A dicotyledonous root exhibits the following zones in a transverse section. What is the correct order of the layers from outside inwards?
(a) Cortex
(b) Pericycle
(c) Epidermis
(d) Vascular bundles

Q. Study carefully the following statements and select the incorrect one(s).
(i) Lateral roots develops from pericycle.
(ii) Endodermis is the innermost layer of cortex.
(iii) Sapwood is the central, dark coloured, non-conducting part of secondary xylem.

Q. Consider the following statements.
(a) In a dicot root, the vascular bundles are collateral and endarch.
(b) The inner most layer of cortex in a dicot root is endodermis.
(c) In a dicot root, the phloem masses are separated from the xylem by conjunctive tissue.
Of the above given statements

Q. Rearrange the following in a proper logical sequence.
Epidermis, Cortex, Root Hair, Xylem, Endodermis.

Epiblema of roots is equivalent to

(a) pericycle

(b) endodermis

(c) epidermis

(d) stele

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