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Biology 11 Chapter - 10
Form and Function in Plants -14
1.
Which one of the following does not occur during apical dominance?
a) A. Growth of lateral roots
b) B. Growth of apical bud
c) C. Growth of main root
d) D. Both b and c
2.
The process in which one part of the plant controls another part of it through a growth substance is known as?
a) Growth correlation
b) Regeneration
c) Transpiration
d) Primary growth
3.
The function of auxin is?
a) To promote growth in stem
b) To promote growth in lateral buds
c) To stop growth in stem
d) None of these
4.
Apical shoot meristem is responsible for growth of?
a) All of these
b) Shoots
c) Leaves
d) Lateral branches
5.
Which one of the following is not a plant growth substance?
a) Haemoglubin
b) Auxin
c) Cytokinin
d) Abscisic acid
6.
Which one of the following is an indole acetic acid?
a) Auxin
b) Ethene
c) Abscisic acid
d) Cytokinin
7.
Which one of the following is not the function of auxin?
a) Inhibit cell division in cambium
b) Promote apical dominance
c) Promote fruit growth
d) Inhibit abscission
8.
Which one of the following is a function of auxin?
a) Promote root growth at low concentration
b) Promote root growth a high concentration
c) Inhibit root growth at low concentration
d) Promote abscission
9.
The third and most active gebberellin is?
a) Ga3
b) Ga2
c) Abscisic acid
d) Cytokinin
10.
Gibberellins are extracted from?
a) Fungi
b) Bacteria
c) Virus
d) Algae
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