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DAILY FREE MCQ CHALLENGE for Pre-Medical Entrance Preparation
Question
In one tissue, The cells are isodiametric, walls are thin and made up of cellulose and the other consist of long, narrow cells with thick and lignified cell walls. They are:
A. Parenchyma and Collenchyma
B. Parenchyma and Sclerenchyma
C. Sclerenchyma and Collenchyma
D. Collenchyma and Parenchyma
NOTEImportant Question from KERALA
See Answer Here
B. Parenchyma and Sclerenchyma
See Explanation Here
Parenchyma cells |
Parenchyma forms the major component within organs. The cells of the parenchyma are generally isodiametric. They may be spherical, oval, round, polygonal or elongated in shape. Their walls are thin and made up of cellulose. They may either be closely packed or have small intercellular spaces. The parenchyma performs various functions like photosynthesis, storage, secretion. |
Sclerenchyma cells |
Sclerenchyma consists of long, narrow cells with thick and lignified cell walls having a few or numerous pits. They are usually dead and without protoplasts. On the basis of variation in form, structure, origin and development, sclerenchyma may be either fibres or sclereids. |
References
NCERT Biology Text, Class: XI, UNIT II: Structural Organisation in Plants and Animals, Chapter 6: Anatomy of Flowering Plants, Page no: 86.
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