Home
Class 12
BIOLOGY
[A] : Cytokinins help in the retention o...

[A] : Cytokinins help in the retention of chloro- phyll and delay senescence in leaves.
[R]: Cytokinins only stimulate root initiation

A

I,II , III and IV

B

I,II and III

C

I and IV

D

I and III

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Similar Questions

Explore conceptually related problems

(A]: Cytokinins help in retention of chlorophyll and delayed senescence in leaves. [R]: Cytokinins only stimulate root initiation

Cytokinin are said to be antiageing hormone because they delay the senescence by

Assertion : Cytokinin along with the auxin are required for morphogenesis. Reason : More cytokinin to auxin ratio promote root initiation during micropropagation.

The phenomenon of delay of senescence by cytokinins is known as

The phenomenon of delay of senescence by cytokinins is known as

A hormone delaying senescence is (a) auxins (b) cytokinin (c) ethylene (d) gibberellin

Cytokinins help overcome the (A)____.they promote (B)____whch helps in the delay of leaf senescence.

[A]: Senescence is induced by the application of cytokinin in plants. [R]: Cytokinin promotes the breakdown of chlorophyll, proteins and nucleic acid.

By which of the following method cytokinins leads to delay in leaf senescence ?

Assertion : A correct concentration of auxin and cytokinin is required for the development of root and shoot in callus. Reason: When the ratio of kinetin to auxin is high only shoot develop but when the ratio is low only roots develop