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Photosynthesis: Powering Life on Earth

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Questions and Answers

What is the primary purpose of the Light-Dependent Reaction in photosynthesis?

To produce ATP using sunlight energy (correct)

To fix carbon dioxide into organic molecules

To convert glucose into oxygen gas

To split water into oxygen and hydrogen ions

What is the role of phloem in a plant's transport system?

Transport food (sugar) from leaves to other plant parts (correct)

Transport water and minerals from roots to leaves

Transport oxygen produced during photosynthesis throughout the plant

Transport carbon dioxide to be used in photosynthesis

During the Calvin Cycle of photosynthesis, which molecule is primarily fixed into organic compounds?

Carbon dioxide (correct)

Water

Oxygen

Glucose

What is the significance of iodine solution turning blue-black when testing a leaf for starch?

It confirms the presence of starch in the leaf Signup and view all the answers

Why is oxygen essential for animal respiration as mentioned in the text?

Oxygen is required for cellular respiration in animals Signup and view all the answers

What is the role of chlorophyll in photosynthesis?

Trapping sunlight to energize the food-making process Signup and view all the answers

Which part of the chloroplast is responsible for converting carbon dioxide into sugar?

Stroma Signup and view all the answers

How does sunlight act as a fuel for photosynthesis?

By providing the plant with the energy it needs to make food Signup and view all the answers

What is the function of water in photosynthesis?

Providing hydrogen for sugar production Signup and view all the answers

If chloroplasts were not present in plant cells, what crucial process would be disrupted?

Photosynthesis Signup and view all the answers