Question

Sammy is taking notes to study for a test. He wrote out the steps that involve hydrogen during photosynthesis. The steps are shown, but they are not in the correct order.

1 - Water is broken down into oxygen and hydrogen.
2 - Glucose is broken down to be used by plants.
3 - Hydrogen combines with carbon dioxide to form glucose.
4 - Hydrogen enters the plant as part of water.

Which lists the correct order of the steps?
Answers-
A: 4, 2, 1, 3
B: 4, 1, 3, 2
C: 4, 3, 1, 2
D: 4, 2, 3, 1

Answer 1

B: 4 hydrogen enters the plant as water, 1 water is broken down into hydrogen and oxygen, 3 hydrogen combines with carbon dioxide to form glucose, 2 glucose is broken down to be used

Answer 2

The correct order of steps (4,1,3,2) that show how hydrogen is involved during photosynthesis is as follows:

4 - Hydrogen enters the plant as part of water.

1 - Water is broken down into oxygen and hydrogen.

3 - Hydrogen combines with carbon dioxide to form glucose.

2 - Glucose is broken down to be used by plants.

PHOTOSYNTHESIS:

• Photosynthesis is a process whereby green plants obtain their food using energy from sunlight.

• Photosynthesis requires certain substances, which are used as reactants during the process. These molecules include water, carbon dioxide, light energy from sun.

• Therefore, the correct order of steps (4,1,3,2) that show how hydrogen is involved during photosynthesis is as follows:

1. 4 - Hydrogen enters the plant as part of water.
2. 1 - Water is broken down into oxygen and hydrogen.
3. 3 - Hydrogen combines with carbon dioxide to form glucose.
4. 2 - Glucose is broken down to be used by plants.

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