Ecosystems: Lesson 4 Quiz

What is the main source of energy for almost all life on Earth?

• Water

• Sunlight

• Wind

• Soil

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Which organisms are mentioned as being able to capture light energy?

• Animals

• Fungi

• Plants, algae, and some bacteria

• Insects

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What is one of the ingredients needed for photosynthesis?

• Nitrogen

• Water

• Oxygen

• Hydrogen

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Which of the following is a byproduct of photosynthesis?

• Carbon dioxide

• Oxygen

• Nitrogen

• Methane

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What do plants need to perform photosynthesis besides sunlight and carbon dioxide?

• Soil

• Water

• Oxygen

• Minerals

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What is the series of reactions called that converts light energy into chemical energy?

• Respiration

• Photosynthesis

• Digestion

• Combustion

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What pigment do chloroplasts contain?

• Chlorophyll

• Hemoglobin

• Melanin

• Keratin

What do chloroplasts absorb from the air for photosynthesis?

• Carbon dioxide

• Oxygen

• Nitrogen

• Hydrogen

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Where are chloroplasts mainly found in plants?

• Leaves

• Roots

• Stems

• Flowers

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What is the main purpose of photosynthesis?

• To produce carbon dioxide

• To convert light energy into sugar and oxygen

• To release nitrogen into the air

• To absorb oxygen from the air

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