PLANT GROWTH AND MOVEMENTS biology MCQ’s questions answers

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PLANT GROWTH AND MOVEMENTS

Question 1 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Anti-gibberellin is ..... [BHU 2002]
A
Cycocel
B
Plastoquinone
C
IAA
D
Ubiquinone
Question 2 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which hormone is not translocated ..... [AMU 2005]
A
Auxin
B
Gibberellins
C
ABA
D
Cytokinin
Question 3 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Farmers in a particular region were concerned that pre-mature yellowing of leaves of a pulse crop might cause decrease in the yield. Which treatment could be most beneficial to obtain maximum seed yield?
A
application of iron and magnesium to promote synthesis of chlorophyll
B
frequent irrigation of the crop
C
treatment of the plants with cytokinins along with a small dose of nitrogenous fertilizer
D
removal of all yellow leaves and spraying the remaining green leaves with 2, 4, 5-trichlorophenoxy acetic acid
Question 4 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Movement stimulated by external factor is ..... [RPMT 2005]
A
Spontaneous movement
B
Autonomic movement
C
Physical movement
D
Paratonic movement
Question 5 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Nicotiana sylvestris flowers only during long days and N.tabacum flowers only during short days. If raised in the laboratory under different photoperiods, they can be induced to flower at the same time and can be cross-fertilized to produce self-fertile offspring. What is the best reason for considering N.sylvestris and N.tabacum to be separate species? (2003)
A
they cannot interbreed in nature
B
they are reproductively distinct
C
they are physiologically distinct
D
they are morphologically distinct
There are 5 questions to complete.

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