Assertion : It is important that the organisms should have cell.
Reason : A cell keeps its chemical composition steady within its boundary.

These questions consist of two statements each, printed as Assertion and Reason. While answering these questions you are required to choose any one of the following five responses. Assertion: Organisms are made up of cells. Reason: Cells are structural unit of living organisms . A cell keeps its chemical composition steady within its boundary.

Write the chemical composition of cell wall.

Name one important ore of aluminium. Give its chemical composition.

Write the chemical composition of algae cell wall.

What is the chemical composition of a fungal cell wall?

Write the chemical composition of bacterial cell well .

Assertion : A cell membrane shows fluid behaviour. Reason : A membrane is a mosaic or composite of diverse lipids and proteins.

Write the chemical composition of plaster of Paris. Write its importance