Question

Plant cell are distinguishable from animal cells in containing
a. Mitochondria
b. Ribosome
c. E.R
d. Cell wall

Answer 1

Hint: Cell is a structural and functional unit of all living organisms. Antony Van Leeuwenhoek first saw and described a live cell. Plant cells are distinguishable from animal cells in the outer structure.Also some organelles are present only in plant cells.

Complete answer:
Plant cell contains an outer wall, plastids and a large central vacuole which are all absent in an animal cell. Animal cells have centrioles which are absent in plant cells. Plants and animal cells are both eukaryotic cells but there is a slight difference in both as the plant cell contains cell walls, plastids, and vacuoles whereas animal cells contain centrioles.

> Cell wall: It is the non-living rigid structure that forms the outer covering for the plasma membrane of plants and fungi. The function of the Cell wall is to provide shape to the cell, it also protects the cell from any mechanical damage, it provides a barrier to the unwanted molecules. The constituent of the cell wall is cellulose, hemicellulose, proteins, and pectin.

Also,
> Mitochondria: It is a double membrane-bound structure. It is present in both plant and animal cells. It is the site for anaerobic respiration and is called the powerhouse of the cell.

> Ribosome: It is a non-membrane bound organelles found in both eukaryotic and prokaryotic cells. It is found in the chloroplast of plants, mitochondria, and rough ER.

> Endoplasmic reticulum (ER): It is the membrane-bound organelle found both on plant and animal cells. It is of two types: rough endoplasmic reticulum, which bears ribosomes on their surface, and smooth endoplasmic reticulum, which do not have ribosomes. RER involved in protein synthesis.

Hence, the correct answer is option (D).

Note: Cells having membrane bound nuclei are called eukaryotic cells. Both animal and plant cells are eukaryotic but animal cells lack a cell wall and their outer covering is a plasma membrane whereas plant cells have a cell wall as their outer covering.