CBSE
Which one of the following is a growth regulator produced by plants?
Naphthalene acetic acid
Zeatin
2,4-dichlorophenoxy acetic acid
Benzyl aminopurine
Choose the minor carp from the following
Cyprinus carpio
Anguilla sp
Labeo bata
cetanophyrngodon idella
Vascular tissue in higher plants develop from which of the following
Procambium
Protoderm
Periblem
Cortex
A substance that induces dormancy of seed is
ABA
GA
thio-urea
cytokinin
Flowering dependent on cold treatment is
cryotherapy
cryogenics
cryoscopy
vernalisation
Which of the following is called stress hormone?
Abscisic acid
Auxin
Cytokinin
Gibberellic acid
Name of a gaseous plant hormone is
IAA
gibberellin
ethylenes
abscisic acid
Cellular totipotency was first demonstrated by
F C Steward
Robert Hooke
T Schwann
A v Leeuwenhoek
During seed germination its stored food is mobilised by
ethylene
cytokinin
ABA
gibberellin
The discovery of gibberellins is related with one of the following
blast disease of rice
rust disease of wheat
bakane disease of rice
early blight disease of potato