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Question

Mesophyll is differentiated in spongy and palisade tissue is
  1. Isobilateral leaf
  2. Dorsiventral leaf
  3. Both of (A) and (B)
  4. None of the above

A
Dorsiventral leaf
B
Isobilateral leaf
C
None of the above
D
Both of (A) and (B)
Solution
Verified by Toppr

The correct option is B Dorsiventral leaf
Dorsiventral leaf - Mesophyll is the ground tissue that occurs between the two epidermal layers. It is exclusively composed of chlorenchyma cells. The mesophyll is characteristically differentiated into two regions namely, an upper palisade parenchyma and a lower spongy parenchyma. Palisade parenchyma is composed of two or three layers of elongated, compactly arranged chlorenchyma cells. Intercellular spaces are absent.
The cells contain a very large number of chloroplasts. Spongy parenchyma is composed of a few layers of loosely arranged spherical or oval chlorenchyma cells with prominent intercellular spaces. These cells contain very few chloroplasts. Isobilateral leaf has undifferentiated mesophyll.
Therefore, the correct answer is option B.

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