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Question-1
A growth response to touch is known as:
(A)
Gravitropism
(B)
Thigmotropism
(C)
Chemotropism
(D)
Geotropism
Question-2
Chrysanthemum is an example of:
(A)
Long day plant
(B)
Short day plant
(C)
Day neutral plant
(D)
Vernalised plant
Question-3
Name the gaseous phytohormone transported through air.
(A)
Auxin
(B)
Ethene
(C)
NAA
(D)
Ethylene
Question-4
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-5
Which of the following is true?
(A)
P
r
is needed for seed germination
(B)
P
fr
is needed for seed germination
(C)
High temperature is needed for seed germination
(D)
High enzyme content is needed for seed germination
Question-6
Which of the following promote abscission of leaves?
(A)
Auxins
(B)
Ethylene
(C)
ABA
(D)
NAA
Question-7
Which of the following is used for stem elongation?
(A)
Cytokinins
(B)
Gibberellins
(C)
ABA
(D)
Auxin
Question-8
Gardeners pinch out apical bud to keep:
(A)
Plants healthy
(B)
Plants grow taller
(C)
Plants small and bushy
(D)
Plants to produce meristem
Question-9
Which growth substance is responsible for apical dominance?
(A)
Gibberellins
(B)
Cytokinins
(C)
ABA
(D)
Auxin
Question-10
Farmers resort to smoking of unripe fruits for early ripening. This is because of the presence of:
(A)
Auxin
(B)
ABA
(C)
Ethylene
(D)
NAA
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Cambridge Advanced Grade 12
IGCSE
Practice in Related Chapters
Transport in Plants
Regulations and Control
DNA and Protein Synthesis
The Molecules of Life
Photosynthesis and Plant Nutrition
Enzymes
Genetics
Cell
Cell Division
Ecology
Animal Nutrition
Reproduction in Animals
Gas Exchange
Evolution
Transport in Mammals
Respiration
Heterotrophic Nutrition
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