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Question-1
Which of the following is a gaseous plant growth substance?
(A)
Ethylene
(B)
Auxin
(C)
IBA
(D)
ABA
Question-2
Which of the following is used for stem elongation?
(A)
Cytokinins
(B)
Gibberellins
(C)
ABA
(D)
Auxin
Question-3
Commercial use of synthetic auxin in cuttings is to stimulate the growth of:
(A)
Roots
(B)
Leaves
(C)
Flowers
(D)
Buds
Question-4
Dormin refers to:
(A)
Auxin
(B)
NAA
(C)
IAA
(D)
ABA
Question-5
Chrysanthemum is an example of :
(A)
Long day plant
(B)
Short day plant
(C)
Day neutral plant
(D)
Vernalised plant
Question-6
Choose the correct statement from the following.
(A)
In dark there is more P
fr
than P
r
(B)
In dark, there is more P
r
than P
fr
(C)
In dark no P
r
or P
fr
(D)
In light, there is more P
r
than P
fr
Question-7
Which hormone promotes fruit ripening?
(A)
Auxin
(B)
Ethylene
(C)
Gibberellins
(D)
Cytokinin
Question-8
The first auxin to be discovered was:
(A)
Indole Acetic Acid (IAA)
(B)
Indole Butyric Acid (IBA)
(C)
Naphthalene Acetic Acid (NAA)
(D)
2, 4, D
Question-9
A growth response to touch is known as:
(A)
Gravitropism
(B)
Thigmotropism
(C)
Chemotropism
(D)
Geotropism
Question-10
Which of the following promote abscission of leaves?
(A)
Auxins
(B)
Ethylene
(C)
ABA
(D)
NAA
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Cambridge Advanced Grade 11
IGCSE
Practice in Related Chapters
The Molecules of Life
Regulations and Control
DNA and Protein Synthesis
Enzymes
Genetics
Cell
Cell Division
Photosynthesis And Plant Nutrition
Animal Nutrition
Reproduction in Animals
Ecology
Heterotrophic Nutrition
Gas Exchange
Evolution
Transport in Mammals
Transport in Plants
Respiration
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