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WorksheetsPhotosynthesis: A Quiz for Grade 7 Students
Total questions: 13
Worksheet time: 7mins
What is the primary pigment involved in photosynthesis?
Melanin
Carotene
Hemoglobin
Chlorophyll
Where in the plant are chlorophyll molecules located?
Mitochondria
Chloroplasts
Vacuole
Cell membrane
What is the function of stomata in photosynthesis?
Exchange of gases
Absorption of water
Regulation of temperature
Production of glucose
How does carbon dioxide enter the leaf through the stomata?
Facilitated diffusion
Active transport
Osmosis
Diffusion
What is the process of converting carbon dioxide into organic compounds known as?
Decomposition
Photosynthesis
Respiration
Fermentation
What enzyme is responsible for carbon fixation in the Calvin cycle?
ATP synthase
RuBisCO
Glyceraldehyde-3-phosphate dehydrogenase
Pyruvate kinase
What is the role of light in the light-dependent reactions of photosynthesis?
Light helps in the production of glucose in the reactions
Light provides the carbon dioxide needed for the reactions
Light is responsible for regulating the temperature in the reactions
Light provides the energy needed for the reactions
What are the products of the light-dependent reactions?
Starch, cellulose, and sucrose
NADH, FADH2, and carbon dioxide
ATP, NADPH, and oxygen
Glucose, water, and carbon dioxide
What is the role of ATP and NADPH in the light-independent reactions?
Provide energy and reducing power for the conversion of carbon dioxide into glucose
Regulate the temperature of the plant
Produce oxygen and water as byproducts
Convert light energy into chemical energy
What is the overall chemical equation for photosynthesis?
8CO2 + 8H2O + light energy → C8H16O8 + 8O2
4CO2 + 4H2O + light energy → C4H8O4 + 4O2
6CO2 + 6H2O + light energy → C6H12O6 + 6O2
2CO2 + 2H2O + light energy → C3H6O3 + 2O2
Pigment present in leaf
Chlorophyll
Chloroplast
Keratin
Starch can be tested by
Potassium
Iodine
Magnesium
Magnesium
Plants prepare their food by a process called
Photosynthesis
Respiration
Excretion
Locomotion
