Question

please help me guys ​

Answer 1

Explanation:

When cytokinins are added directly to the abscission layer, senescence of the zone is retarded. This delays the degradation of protein and chlorophyll of the plant parts and hence delays senescence. As they act as anti senescent, they act as antagonistic to ethylene which accelerates senescence.

So, the correct answer is 'If both the assertion and reason are true but the reason is not a correct explanation of the assertion'

Answer 2

Answer:

3. velocity

Answer. The physical quantity which corresponds to the rate of change of displacement is velocity. The SI unit of velocity is m/s.

4. The acceleration of body moving with uniform velocity is zero, because there is no change in velocity.