PLANT GROWTH AND MOVEMENTS biology MCQ’s questions answers

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PLANT GROWTH AND MOVEMENTS

Question 46 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Dwarfness can be controlled by treating the plant with (2002, 1992)
A
cytokinin
B
gibberellic acid
C
auxin
D
antigibberellin
Question 47 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which one prevents photo-oxidation and pigment destruction? ..... [AIIMS 1997]
A
Phytochrome
B
Phytochormone
C
Phycocyanin
D
Phco-erythrin
Question 48 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is the role of auxin? ..... [CMC 2003]
A
Prevents abscission of leaves and fruits
B
Promotes abscission of leaves and fruits
C
Promotes stomatal closure
D
Promotes dormancy
Question 49 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
With reference to the diagram given below identify the incorrect statement:

{question abmitted by Adhithyan js}
A
It is due to the habitation
B
Shows heterophyllous development due to environment
C
It is also called plasticity.
D
It shows the heterophyllous condition in Larkspur
Question 50 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Seed dormancy is due to the .....
A
ethylene
B
abscisic acid
C
IAA
D
starch
There are 50 questions to complete.