Question

A parenchymatous cell, which stores ergastic materials or waste substance is
A. Idioblast
B. Phragmoplast
C. Blastomere
D. None of the above

Answer 1

Hint: Parenchyma is a type of simple permanent tissue that forms the major component within the various organs of plants. Organs are roots, stem, leaves, fruits and seeds. It forms the main bulk of the plant body.

Complete answer:
Parenchymatous cells are the cells of parenchyma. These cells do not lose their protoplasm, so they are living cells. They are generally isodiametric.The parenchymatous cells are thin-walled and their cell wall is made up of cellulose. These cells are closely packed or may have some intercellular space. Chloroplasts are present in the parenchymatous cells to perform the photosynthesis.
Idioblast is the parenchymatous cell which stores ergastic material or waste substances. They are the sclerenchymatous fibres found in the leaf of yucca. They have various functions such as storage of reserves, excretory materials, pigments and minerals.
Phragmoplast is a plant cell which formed during the late cytokinesis. These are the complex assembly of microtubules, actin filaments and associated molecules.
Blastomere is a type of cell which is produced by the cell division of the zygote after fertilization and it is an essential part of blastula formation. The division of blastomere from the zygote allows a single fertile cell to continue to cleave and differentiate until a blastocyst forms.

So the correct answer is option A.

Note: From the above solution we came to know that the idioblast is the only parenchymatous cell which stores excretory material of plants. It also stores resins and tannins.