Questions & Answers

A plant cell without cell wall is called
A. Protoplast
B. Protoplast
C. Nucleoplasm
D. Explant

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Hint: Plant cells are way too different from animal cells. Their shapes are quite different from that of an animal cell. A plant cell typically consists of a cell wall followed by the cell membrane and cell organelles. Though most of the organelles of a typical plant cell are similar to that of animal cells, there are few exceptions present.

Complete answer:
A plant cell contains a cell wall, made up of cellulose, hemicellulose, pectin etc. and a few exclusive cell organelles like plastids, chloroplasts, and large vacuoles. They are devoid of the centrosomes needed in animal cells during cell division. The cell wall functions in the cell to cell communication and provides shape to the cell to form tissues and also in plant-microbe interaction.
Protoplast is a highly porous substance that is made up of Teflon fluorocarbon (PTFE) fibre base.
Protoplast is the result obtained from stripping off the cell wall from an entire plant cell by chemical, mechanical, or enzymatic action, leaving behind the intact cell with the plasma membrane.
The matrix of the nucleus of any cell is known as nucleoplasm. It contains chromatin fibres (chromosomes), nucleolus and several enzymes and protein.
The explant is a culture technique used in biology to culture cells from a piece or pieces of tissue or organ removed from a plant or animal organs typically.

Hence, the correct answer is option (B).

Note: The enzymes required for cell wall extraction to obtain protoplast are cellulase, pectinase, xylanase. The specialized pathway for intercellular communication in cell walls is termed as plasmodesmata.