Phototropic curvature in Avena coleoptile is the result of uneven distribution of
auxin
starch
gibberellins
phytochrome
Study of bakanae disease of rice led to discovery of
auxins
bakery rice
Both (a) and (b)
gibberellins
Equipment used for the measurement of growth in plants is known as
respirometer
auxanometer
atmometer
potometer
First transistory chemical formed by reaction between CO2 and RUBP is
PGA
PGAL/ GAP
dihydroxy acetone phosphate
2 carboxy, 3-keto, 1-5 biphosphoribotol
D.
2 carboxy, 3-keto, 1-5 biphosphoribotol
During first phase, also known as carboxylation, of Calvin cycle RUBP or Ribulose-1, 5-biphosphate combine with CO2 in the presence of RUBP carboxylase or rubisco. It produces a transient intermediate compound 2 carboxy, 3-keto, 1-5 biphosphoribotol.
The carboxylating enzyme present in bundle sheath cells of maize leaves is
RUBP carboxylase
hexokinase
carbonic anhydrase
PEP-carboxylase
Which of the following groups of plants are propagated through underground root?
Pistia, Chrysanthemum and pineapple
Ginger, potato, onion and zamikand
Sweet potato, Asparagus, Tapioca and dahlia
Bryophyllum and Kalanchoe
Artificial induction ofroots on stems before it is separated from the parent plant for propagation is called
layering
root-stem joint
cutting
plant tissue culture
Consider the following four statements I, II, III and IV and select the right option.
I. The floral formula for Liliaceae is
P3 + 3 A3 + 3 +
II. In vexillary aestivation, the large posterior petal is called, standard, two lateral ones are wings and two small anterior petals are termed keel.
III. In pea flower the stamens are monoadelphous.
IV. The floral formula for Solanaceae is
K(3) C(3) A(14) +
The correct statements are
II and III
I and III
I and II
III and IV
Which of the following is the scientific or botanical name of Asafoetida (Hing)?
Curcuma longa
Curcuma amada
Alpinia galanga
None of these