Multiple choice

Why does a plant's roots need oxygen to help the plant grow?

  1. to gather water & nutrients from the soil

  2. to synthesize carbon dioxide

  3. to oxygenate the chlorophyll

  4. to help absorb the Sun's energy
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A Correct answer
Explanation

Roots require oxygen for cellular respiration, which provides the energy necessary for active transport. This energy is used to absorb water and mineral nutrients from the soil.

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