It is a double-membrane structure in which the outer membrane is more permeable than inner membrane. The inner membrane possesses more proteins. The outer membrane may be attached to ER. They are present in the cytoplasm of green algae and higher plants. Based on the given information, answer the given questions
Mention one function of this structure

Explanation

**Step-by-Step Solution:**

1. **Identify the Structure**: The question describes a double-membrane structure that is more permeable on the outer membrane than on the inner membrane, which is rich in proteins. This description matches the characteristics of chloroplasts.

2. **Location**: The question states that this structure is found in the cytoplasm of green algae and higher plants. Chloroplasts are indeed present in these organisms.

3. **Function of the Structure**: The primary function of chloroplasts is to conduct photosynthesis. This process involves the green pigment chlorophyll, which is located within the chloroplasts.

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