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Question-1
What type of energy is needed for photosynthesis to happen?
(A)
Light
(B)
Heat
(C)
Electrical
(D)
Wind
Question-2
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-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
Tomatoes in a greenhouse grow faster if the carbon dioxide concentration is increased. What does this show?
(A)
Temperature must have been a limiting factor
(B)
Carbon dioxide concentration must have been a limiting factor
(C)
Light intensity must have been a limiting factor
(D)
Oxygen must have been a limiting factor
Question-5
Why do plants need nitrate ions?
(A)
To make fatty acids
(B)
To make proteins
(C)
To make starch for storage
(D)
To make glucose
Question-6
What is called soil less culture?
(A)
Hydroponics
(B)
Nitroponics
(C)
Electroponics
(D)
Photoponics
Question-7
A plant is showing stunted growth and yellowish leaves. This may be due to the deficiency of which of the following salts?
(A)
Phosphates
(B)
Nitrates
(C)
Potassium
(D)
Sodium
Question-8
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
Question-9
The waste by-product of photosynthesis.
(A)
Carbon dioxide
(B)
Oxygen
(C)
Glucose
(D)
Hydrogen
Question-10
The small pores present on the surface of the leaves.
(A)
Stomata
(B)
Chlorophyll
(C)
Chloroplast
(D)
Mitochondria
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Cambridge Secondary Grade 9
IGCSE
Practice in Related Chapters
The Interdependence of Living Organisms
Feeding
Keeping Healthy
Transport in Plants
Classification
Cells and Tissues
Movement in and out of Cells
Personal Health
Animal Nutrition
Reproduction
Sensitivity
Cells the Building Blocks
Genetics
The Skeleton, Muscles and Movement
A Sexual Reproduction and Cloning Plants
The Senses
Survival
Co-ordination
Energy for Respiration
The Chemicals of Living Cells
How Substances Get In and Out of Cells
Plants for Food
Photosynthesis and Nutrition in Plants
Plant Structure and Function
Food and Diet
The Human Impact on the Environment
Digestion, Absorption and Use of Food
The Blood Circulatory System
Breathing
Excretion and the Kidneys
Human Reproduction
Classification
Conservation
Micro Organisms
Reproduction in Flowering Plants
Movement and Locomotion
Growth and Development
Disease: causes, transmission and control
Ecosystems
Population
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