Water is necessary for…

Assertion: All bryophytes are land dwellers. Reason: Water is necessary to complete their life-cycle.

Assertion : All bryophytes are called as amphibians of plant kingdom. Reason : Water is necessary to complete their life-cycle.

What is necessary for work to be done? Choose the correct statement. (1) Action of force is necessary. (2) Displacement is necessary. (3) Displacement in the direction of force is necessary.

Show that both air and water are necessary for corrosion of iron.

Give any four reasons why water is necessary in our body.

Identify the wrong statements from the below. (I) Vermicompost bed must be selected in an elevated level. (II) The vermibed should be exposed to sunlight (III) Water stagnation is necessary for the worms. (IV) The size of a pit for vermiculture can vary.

Name the gas which gets dissolved in water and is necessary for plants.

Why is water necessary for a moss plant to complete its life cycle ? List two reasons.