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Question-1
Which of the following is used for stem elongation?
(A)
Cytokinins
(B)
Gibberellins
(C)
ABA
(D)
Auxin
Question-2
Name the gaseous phytohormone, transported through air.
(A)
Auxin
(B)
Ethene
(C)
NAA
(D)
Ethylene
Question-3
Two growth substance may reduce each others effect. It is known as:
(A)
Metabolism
(B)
Anabolism
(C)
Antagonism
(D)
Synergism
Question-4
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-5
Name the enzyme which catalyses the conversion of starch to maltose.
(A)
Amylase
(B)
Cymase
(C)
Isomerase
(D)
Ketase
Question-6
Gibberellins promote seed germination by:
(A)
Activating the enzymes for respiration
(B)
Activating the process of inhibition
(C)
Activating the production of amylase
(D)
Activating cell division
Question-7
A growth response to touch is known as:
(A)
Gravitropism
(B)
Thigmotropism
(C)
Chemotropism
(D)
Geotropism
Question-8
Which growth substance is responsible for apical dominance?
(A)
Gibberellins
(B)
Cytokinins
(C)
ABA
(D)
Auxin
Question-9
Two growth substances may act together to produce a larger effect. This is known as:
(A)
Antagonism
(B)
Synergism
(C)
Metabolism
(D)
Anabolism
Question-10
Went's experiments were done with shoots of:
(A)
Oats
(B)
Barley
(C)
Rice
(D)
Wheat
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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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