Science 7 Kelp Forest

What are carbon dioxide (CO₂) and water (H₂O) converted into as a result of photosynthesis?

• O₂ (oxygen) only

• C₆H₁₂O₆ (glucose) only

• O₂ (oxygen) and C₆H₁₂O₆ (glucose)

• neither O₂ (oxygen) and C₆H₁₂O₆ (glucose)

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Why do plants conduct photosynthesis?

• to make light

• to make glucose

• to make mitochondria

• to release carbon dioxide

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Which statement best summarizes what happens to energy in an ecosystem when it reaches the top of the food chain?

• The flow of energy stops when the top predator dies.

• The flow of energy stops when a secondary predator decomposes.

• The energy flows in the opposite direction, back down the food chain.

• The energy is transferred to the soil and recycled back to the producers.

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According to the food web shown above, the mushrooms would be classified as

• producers

• herbivores

• consumers

• decomposers

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Which of the following statements is true?

• Animal and plant cells both use cellular respiration and photosynthesis.

• Animal cells use cellular respiration and plant cells only use photosynthesis.

• Animal cells use photosynthesis and cellular respiration and plants just use photosynthesis.

• Animal cells use cellular respiration and plant cells use both cellular respiration and photosynthesis.

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What is missing from the following food chain? Sun ------> rabbit ------> wolf

• Predator

• Omnivore

• Producer

• Consumer

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According to the food web above, which of the following statements is true?

• A. Seals are a source of food for sharks.

• B. Seals eat sharks.

• C. Algae are a source of food for big fish.

• D. Algae eat little fish.

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Identify the conversion made by the process of cellular respiration.

• H₂O (water) and CO₂ (carbon dioxide) into O₂ (oxygen) and C₆H₁₂O₆ (glucose)

• H₂O (water) and C₆H₁₂O₆ (glucose) into O₂ (oxygen) and CO₂ (carbon dioxide)

• O₂ (oxygen) and CO₂ (carbon dioxide) into H₂O (water) and C₆H₁₂O₆ (glucose)

• O₂ (oxygen) and C₆H₁₂O₆ (glucose) into H₂O (water) and CO₂ (carbon dioxide)

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If photosynthesis is a chemical process that we can’t physically see, how are we able to determine if it is occurring?

• by measuring the plant's roots

• by looking for evidence such as leaf size

• by measuring its by-product of oxygen and water

• by looking for evidence such as how tall a plant is

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In the food web shown, the rabbit is the primary food source for snakes, owls, and cats. If the rabbit population is infected with a disease that causes them to die off, what will happen to the populations of snakes, owls, and cats?

• They will increase in number.

• They will decrease in number.

• They will hibernate until the rabbit population recovers.

• They will remain unchanged because they will eat different animals for food.

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