Question

Viviporous mutant is a plant that

(i) is deficient in producing ABA

(ii) is deficient in ABA sensing

(iii) has young baby plants growing on the mother plant body

(iv) is lack of quiescent stage

which above are correct

Answer 1

Option (ii) and (iv) are correct options

Viviparous mutant is a plant that is deficient in producing ABA. It is observed generally that plant hormone ABA, which functions for development of seed dormancy is found to be relatively low in embryos of seeds of the viviparous mutant plants.

Viviparous mutant is a plant that lacks quiscent stage. Quiscent stage is a state of inactivity or dormancy. So, it is observed that if there is absence of ABA during seed development, there is also absence of dormancy in mature seeds.