Question

Draw and label a plant cell. Write the main function of chloroplast, cell wall, plasma membrane, lysosome and chromosome.

Answer 1

Chloroplasts work to convert light energy of the Sun into sugars that can be used by cells. The entire process is called photosynthesis and it all depends on the little green chlorophyll molecules in each chloroplast.

A cell wall is a structural layer surrounding some types of cells, situated outside the cell membrane. It can be tough, flexible, and sometimes rigid. It provides the cell with both structural support and protection, and also acts as a filtering mechanism.

The cell membrane or the plasma membrane is selectively permeable to ions and organic molecules and controls the movement of substances in and out of cells. The basic function of the cell membrane is to protect the cell from its surroundings. It consists of the lipid bilayer with embedded proteins.

A lysosome is a membrane-bound organelle found in nearly all animal cells. They are spherical vesicles which contain hydrolytic enzymes that can break down virtually all kinds of biomolecules.

Chromosome, the microscopic threadlike part of the cell  carries hereditary information in the form of genes.

Answer 2

Chloroplast gives green pigment or colour to leaf
Cell wall protects the cel in plant only
Plasma membrane allows certain material into cell
Lysosomes sucidal bags of celll