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Standard XII
Biology
Apoplast Pathway
Question

What indicate X,Y in the given diagram?
851521_9af833c4464345ca9d1d2d46d3e9bce7.png
  1. X-Cell surface membrane Y-Plasmodesma
  2. X-Cell surface membrane Y-Cytoplasm
  3. X-Plasmodesma Y-Cell surface membrane
  4. X-Plasmodesma Y-Tonoplast

A
X-Plasmodesma Y-Cell surface membrane
B
X-Cell surface membrane Y-Plasmodesma
C
X-Plasmodesma Y-Tonoplast
D
X-Cell surface membrane Y-Cytoplasm
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Solution
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The correct option is A X-Cell surface membrane Y-Plasmodesma
The given diagram represents the symplastic pathway of water movement. In symplast pathway, water travels from one cell to next through plasmodesmata. The symplast consists of an entire network of cell cytoplasm which is interconnected by plasmodesmata. Hence, in the diagram, X is the cell surface membrane and Y is plasmodesmata or plasmodesma.
So, the correct answer is A.

806197_851521_ans_4cd1af971bf94c1486896516f7423899.png

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Similar Questions
Q1
Abhi observed the following cell parts of two different cells under a microscope. He recorded his observation in the table given.

Parts of cellCell X Cell Y PresentAbsentPresentAbsentCell wall√√Cytoplasm√√Nucleus√√Cell membrane√√Chloroplast√√

Identify X and Y.
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Q2
What are the different methods of transportation across the cell surface membrane?
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Q3

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What is a tonoplast?

(a) Outer membrane of mitochondria

(b) Inner membrane of chloroplast

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(d) Cell membrane of a plant cell

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Q4

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(a) What type of cells are (i) X and (ii) Y
(b) Give one example each of cells like (i) X and (ii) Y?

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Mesosomes are the infoldings of cell membrane which
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