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  4. The cells or tissues which constitute the pith of a dicot stem possess cell walls composed of

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Q. The cells or tissues which constitute the pith of a dicot stem possess cell walls composed of

NTA AbhyasNTA Abhyas 2020Anatomy of Flowering Plants

Solution:

A large number of rounded, parenchymatous cells with large intercellular spaces which occupy the central portion of the stem constitute the pith of a dicot stem.
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.