Question

Analyze the description of photosynthesis. The numbers represent the sentences in the passage and will help you answer the question.

(1) Photosynthesis is the process by which plants convert chemical energy to light energy. (2) This process is important in many ways. (3) Photosynthesis is the primary source of oxygen of humans, animals, and plants that contain chlorophyll. (4) Photosynthesis allows the flow of energy from animals to plants.

Which corrections should be made to describe photosynthesis accurately? Check all that apply.

(1) Light energy and chemical energy should be switched.
(1) Chemical energy should be changed to mechanical energy.
(3) Plants that contain chlorophyll should not be included.
(3) Oxygen should be changed to carbon dioxide.
(4) Animals and plants should be switched.

Answer 1

Selections:
- (1) Light energy and chemical energy should be switched.
- (4) Animals and plants should be switched.

Brief reasons:
- Photosynthesis converts light energy into chemical energy (not the reverse), so the terms in (1) must be swapped.
- Energy flows from plants to animals (plants capture solar energy and pass it to consumers), so (4) should read "from plants to animals."

The other choices are incorrect: chemical → mechanical is wrong; plants that contain chlorophyll are the organisms that perform photosynthesis (they should be included, not removed); and photosynthesis produces oxygen (not carbon dioxide).