✅ 7th Grade Life Science: Photosynthesis Quiz
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✅ 7th Grade Life Science: Photosynthesis Quiz
What is the main process by which plants make their own food?
A) RespirationB) Photosynthesis
C) Transpiration
D) Germination
What is the primary source of energy for photosynthesis?
A) SoilB) Water
C) Sunlight
D) Air
In which part of a plant does most photosynthesis take place?
A) RootsB) Flowers
C) Stems
D) Leaves
What gas do plants take in from the atmosphere for photosynthesis?
A) OxygenB) Carbon dioxide
C) Nitrogen
D) Hydrogen
What liquid is absorbed by plants from the soil and used in photosynthesis?
A) OilB) Sap
C) Water
D) Nectar
What gas is released by plants as a product of photosynthesis that is essential for animals to breathe?
A) Carbon dioxideB) Nitrogen
C) Oxygen
D) Methane
What is the name of the green pigment found in plant cells that captures energy from sunlight?
A) MelaninB) Hemoglobin
C) Chlorophyll
D) Carotene
What are the two main products created by plants during photosynthesis?
A) Carbon dioxide and waterB) Oxygen and carbon dioxide
C) Glucose (sugar) and oxygen
D) Water and glucose (sugar)
Which of the following best represents the word equation for photosynthesis?
A) Oxygen + Glucose $ \rightarrow $ Carbon Dioxide + Water + EnergyB) Carbon Dioxide + Water + Sunlight $ \rightarrow $ Glucose + Oxygen
C) Glucose + Oxygen $ \rightarrow $ Carbon Dioxide + Water
D) Water + Oxygen + Sunlight $ \rightarrow $ Glucose + Carbon Dioxide
Why is photosynthesis important for almost all life on Earth, including humans?
A) It helps plants grow taller.B) It cleans the soil.
C) It produces the food and oxygen necessary for survival.
D) It makes the air smell fresh.
Through which plant part is water primarily absorbed from the soil?
A) LeavesB) Flowers
C) Stems
D) Roots
If a plant is kept in complete darkness for an extended period, how would its ability to perform photosynthesis be affected?
A) It would perform photosynthesis faster.B) It would stop performing photosynthesis.
C) It would perform photosynthesis using only water.
D) It would perform photosynthesis using only carbon dioxide.
Photosynthesis is often called the "basis of life" on Earth. Which statement best explains this idea for a 7th-grade student?
A) It makes plants green and beautiful.B) It helps regulate Earth's temperature.
C) It creates the food and oxygen that nearly all other living things depend on.
D) It helps break down rocks into soil.
Besides sunlight, what two raw materials are essential for photosynthesis, and where do plants obtain them?
A) Oxygen from the air and minerals from the soil.B) Carbon dioxide from the air and water from the soil.
C) Nitrogen from the air and phosphorus from the soil.
D) Glucose from the stem and protein from the leaves.
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