Assertion. Most of the physiological experiments have been performed using unicellular green aglae.
Reason. Agal cells are complete organisms capable of photosynthesis and other processes similar to higher plants.

Assertion (A) : Young's double slit experiment can be performed using a source of white light. Reason (R ) : The wavelength of red light is less than wavelength of other colors in white light.

Assertion :- Most of the mineral absorption by plant is active process. Reason:- Some ions also move in epidermal cells passively.

Assertion : Multicellular organisms have higher survival value than the unicellular organisms. Reason : Dead cells are replaced by new cells in multicellular organisms.

Assertion: Tropical plants have a higher optimum temperature for photsynthesis than temperate plants Reason: The temperature optimum for photosynthesis of different plants depends on their habitat.

Assertion: Tropical plants have a higher optimum temperature for photsynthesis than temperate plants Reason: The temperature optimum for photosynthesis of different plants depends on their habitat.

Assertion : During the physiology of excretion , deamination does not take place in liver cells . Reason : Deamination is a process to make use of excess of amino acids which cannot be incorporated into the protoplasm .

Assertion : Cyanobacteria are photosynthetic autotrophs. Reason : Cyanobacteria have chlorophyll a and b similar to green plants.

Assertion:Life would have been impossible without green plants Reason:The food we consume and the oxygen we breath are products of their activities

Assertion:Life would have been impossible without green plants Reason:The food we consume and the oxygen we breath are products of their activities