CBSE
Internodal elongation is stimulated by
auxin
cytokinin
gibberellin
phenol
The mutagenic agent among following is
ethyl methane
ethylene
2, 4-D
IAA
Which one is a short day plant?
Brassica campestris
Raphanus sativus
Glycine max
Papaver somniferum
Leaf abscission is caused by
ABA
cytokinin
auxin
gibberellin
Flash of light in dark inhibits flnwering in
SDP
LDP
LSDP
DNP
First natural cytokinin was discovered by :
Skoog and Miller
Letham
Benson and Calvin
Thimann and Went
The synthetic hormone used as a weedicide is
Indole 3-acetic acid
gibberellic acid
2, 4- D
Indole butyric acid
Which one of the following is a natural growth inhibitor?
NAA
ABA
IAA
GA
Artificial application of auxins like IAA, IBA and NAA to unpollinated pistils can form
fruits with much flash
larger fruits
sweet fruits
seedless fruits
Plant length is increased by
apical meristem
lateral meristem
dermarogen
periblem