Question

A parenchyma cell storing ergastic materials
A. Storage cell
B. Idioblast
C. Cnidoblast
D. Phragmoplast

Answer 1

Hint: They are isolated plants which are different from their neighbouring tissues. There are various materials which include storage of minerals, pigments, excretory materials, etc. They contain oil, latex, tannin, resin, gum, etc.

Complete step by step answer:
Idioblasts are the specialised parenchymatous cells that contain ergastic materials. Ergastic materials are non-protoplasm materials. It includes oil, drops, crystals, etc. They may be present in insoluble or soluble form.
Parenchyma cells have large intercellular spaces that are ideal for storage. Parenchyma cells can store a high amount of storage, water, fats and ergastic substances. Parenchyma cells that contain ergastic substances are called Idioblast. Idioblast is the isolated plant that differs from their neighbouring tissues.

Thus, the correct answer is option B. i.e., Idioblast.

Additional information:
The phragmoplast forms during cytokinesis that serves as a scaffold for cell plate assembly. It carries vesicles of cell wall material to the new cell plate. Cnidioblast is a special cell that contains a hollow, coiled and barbed thread and the purpose of this thread is to capture prey and this thread contains poison.

Note:
Parenchyma cells store various materials like starch, protein, water, etc. protein that is stored is a good source of nitrogen that is helpful for the plants. In tubers of potato and cassava, a high amount of starch is present. Parenchyma cells are the cells that store ergastic materials known as Idioblast. Idioblasts contain tannin, resin, latex, gum and oil.