CBSE
Multiple Choice QuestionsWhich of the following is not an auxin?
IM
IBA
Zeatin
NM
Hormone inducing fruit ripening is
Cytokinin
Ethylene
Aabscissic acid
Gibberellic acid
Which one correctly describe reproduction and life cycle of fern?
Spore → Gamete → Prothallus → Sporophyte
Gamete → Spore → Prothallus → Plant
Prothallus → Sporophyte → Gamete → Fern
Sporangia → Spore → Prothallus → Sporophyte → Plant
Which one of the following generally acts as an antagonist to gibberellins?
Zeatin
Ethylene
ABA
IAA
Sweet potato is a modified
Stem
Adventitious root
Rhizome
Tap root
Which of the following properties is shown by cytokinins?
Delay leaf senescence
Cause leaf abscission
Promote seed dormancy
Promote stornatal closing
Genetic dwarfism can be overcome by
Gibberellin
Ethylene
Auxin
ABA
Plants having little or no secondary growth are
Grasses
Deciduous angiosperms
Cycads
Conifers
Phellogen and phellem respectively denote
Cork and cork cambium
Cork cambium and cork
Secondary cortex and cork
Cork and secondary cortex
Pneumatophores occur in
Halophytes
Free-floating hydrophytes
Submerged hydrophytes
Carnivorous plants
