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HiSET Science Review: Life science: photosynthesis

Review life science: photosynthesis for this HiSET Science question with the key prompt clue, correct-answer reasoning, distractor checks, and sources to verify next.

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This question-specific review guide is tied to the answer reasoning for a PracticeTestVault item. Use it after you answer the question so the review stays focused on what the prompt actually tested.

What this question is testing

Objective: Life science: photosynthesis

Prompt focus: Which gas do plants take in from the atmosphere to carry out photosynthesis?

Why the correct answer works

Carbon dioxide

Plants take in carbon dioxide to perform photosynthesis.

Why the tempting wrong answer fails

The tempting wrong answer usually loses because it skips the key condition, priority, or evidence in the prompt.

Plain-language takeaway

During photosynthesis, plants absorb carbon dioxide from the air and use it along with water and sunlight to produce glucose and release oxygen.

Simple analogy

Think of life science: photosynthesis like following a short checklist: identify the clue, confirm the rule, and then make the move that fits this exact scenario.

How to review it before a retake

  • Underline the command word and name what the question is asking before rereading the choices.
  • Compare the correct answer against the closest distractor and write the exact detail that separates them.
  • Retest this objective with a fresh question without looking at the rationale first.

Sources to verify next