Protoplasm is a total living substance of a cell. It is composed of cytoplasm and nucleoplasm.

Chlamydomonas is a single-celled organism.

Smaller size of a cell provides larger surface/volume ratio, which increases the efficiency of the cells.

Cell wall is absent in animal cells.

Cell wall is mostly made of cellulose.

In plant cells, a cell wall composed mainly of cellulose is located outside the cell membrane.

Hydra is a multicellular organism.

Chromatin fibres are present in nucleosome of nucleus.

Centrosome is not present in plant cells.

Part of cytoplasm other than the organelles is called cytosol.

Thylakoids are found in plant cells only.

 Cork is a substance which comes from the bark of a tree. Cork is an impermeable, buoyant material.

Smooth endoplasmic reticulum helps in synthesis of fat molecules.

Protein synthesis is carried out by ribosomes present on the rough endoplasmic reticulum.

Centrosome is non-membrainous.

Nerve cells are the longest cells. Bacteria are the smallest cells. Ostrich egg is the largest cell.

Cell wall is freely permeable and does not regulate the entry of certain solutes.

Endoplasmic reticulum forms a network system in a cell.

RBCs are biconcave in shape. WBCs are amoeboid in shape. Nerve cells are elongated in shape. Guard cells are bean shaped.