Assertion. Death is regarded as the most regulatory process on earth.
Reason. It avoids over-crowding caused by continuous reproduction

[A]: Death is regarded as the most important regulatory process on earth. [R]: It avoids over-crowding, caused by con- tinuous reproduction

Death is the most important regulatory process on the earth. It avoids

Assertion: Reproduction and death are the two essential processes on the earth. Reason: These maintain continuity of the race on the earth.

Assertion: Phytochrome, a protein, has regulatory functions. Reason: Various morphogenetic processes are regulated by it.

Assertion: Phytochrome, a protein, has regulatory functions. Reason: Various morphogenetic processes are regulated by it.

Assertion :- Diffusion is one of the most important process of plants. Reason:- Diffusion is the only means for gaseous movement within plant body.