Please solve this         

1. A plant hormone related with inhibition of senescence is :

(a) Ethylene
(b) ABA
(c) Bromic acid
(d) GA

                            

Dear Student

1. Both auxin and gibberellins inhibit the senescence in different parts of the plant. But, the major role to delay the senescence process is done by the plant hormone cytokinin.
2. a
3. c

Regards