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Question-1
After photosynthesis, hundreds of glucose molecules join together to from a long chain of molecule of X. What is X?
(A)
Amino acids
(B)
Cellulose
(C)
Starch
(D)
Vitamins
Question-2
What type of energy is needed for photosynthesis to happen?
(A)
Light
(B)
Heat
(C)
Electrical
(D)
Wind
Question-3
What will happen to glucose soon after photosynthesis?
(A)
Glucose is broken down to sucrose
(B)
Glucose molecules are quickly built up into starch molecules
(C)
Glucose molecules are quickly built up into protein molecules
(D)
Glucose molecules are quickly built up into amino acid molecules
Question-4
A plant is showing discoloured and mottled leaves. This may be due to the deficiency of which of the following salts?
(A)
Nitrates
(B)
Phosphates
(C)
Potassium
(D)
Sodium
Question-5
The waste by-product of photosynthesis.
(A)
Carbon dioxide
(B)
Oxygen
(C)
Glucose
(D)
Hydrogen
Question-6
The oxygen molecule in glucose formed during photosynthesis comes from:
(A)
Water
(B)
Organic acids
(C)
CO
2
(D)
Atmosphere
Question-7
A plant is showing purplish leaves with red colouration round the veins. This may be due to the deficiency of which of the following salts?
(A)
Nitrates
(B)
Phosphates
(C)
Potassium
(D)
Sodium
Question-8
Sugar formed during photosynthesis combines with nitrogen. What is this product called as?
(A)
Starch
(B)
Cellulose
(C)
Amino acids
(D)
Vitamins
Question-9
Which gas is needed for photosynthesis?
(A)
Oxygen
(B)
Carbon dioxide
(C)
Hydrogen
(D)
Nitrogen
Question-10
What is a trace element?
(A)
An element which can be traced by Geiger counter
(B)
An element which was first discovered in a cell
(C)
An element which is required by plants in minute quantities
(D)
An element which draws other elements out of protoplasm
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Cambridge Secondary Grade 9
IGCSE
Practice in Related Chapters
The Interdependence of Living Organisms
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Personal Health
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Sensitivity
Cells the Building Blocks
Genetics
The Skeleton, Muscles and Movement
A Sexual Reproduction and Cloning Plants
The Senses
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Co-ordination
Energy for Respiration
The Chemicals of Living Cells
How Substances Get In and Out of Cells
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Photosynthesis and Nutrition in Plants
Plant Structure and Function
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Reproduction in Flowering Plants
Movement and Locomotion
Growth and Development
Disease: causes, transmission and control
Ecosystems
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