Read the following sentences about photosynthesis:
(i) Sunlight, carbon dioxide, chlorophyll and water are necessary.
(ii) Oxygen is absorbed.
(iii) Leaves carry out photosynthesis.
(iv) Proteins are made during photosynthesis.
Choose the correct pair of sentences that are true to photosynthesis.

Options

A. (iii) and (iv)
B. (i) and (iii)
C. (ii) and (iv)
D. (i) and (iv)

Explanation

To determine the correct pair of sentences that are true about photosynthesis, let's analyze each statement step by step.

### Step-by-Step Solution:

1. **Statement (i)**: "Sunlight, carbon dioxide, chlorophyll and water are necessary."
- This statement is **true**. Photosynthesis requires sunlight, carbon dioxide (which plants absorb from the air), chlorophyll (the green pigment in leaves that captures light energy), and water (which plants absorb from the soil).

2. **Statement (ii)**: "Oxygen is absorbed."
- This statement is **false**. During photosynthesis, plants absorb carbon dioxide and release oxygen as a byproduct. Therefore, oxygen is not absorbed; it is released into the atmosphere.

3. **Statement (iii)**: "Leaves carry out photosynthesis."
- This statement is **true**. The leaves of plants contain chlorophyll and are the primary sites where photosynthesis occurs.

4. **Statement (iv)**: "Proteins are made during photosynthesis."
- This statement is **false**. Photosynthesis primarily produces glucose (a type of sugar) from carbon dioxide and water using sunlight. While plants do need proteins, they are not produced directly during the photosynthesis process.

### Conclusion:
The correct pair of sentences that are true about photosynthesis are:
- Statement (i): "Sunlight, carbon dioxide, chlorophyll and water are necessary."
- Statement (iii): "Leaves carry out photosynthesis."

### Final Answer:
The correct pair of sentences is (i) and (iii).

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