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Visual purple is present in...

Visual purple is present in

A

rods

B

cones

C

choroid

D

iris

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The correct Answer is:
**Step-by-Step Solution:** 1. **Understanding Visual Purple**: Visual purple, also known as rhodopsin, is a pigment found in the photoreceptor cells of the retina. It plays a crucial role in the process of vision, particularly in low-light conditions. 2. **Identifying Photoreceptor Cells**: There are two main types of photoreceptor cells in the retina: rods and cones. Rods are responsible for vision in dim light, while cones are responsible for color vision and function best in bright light. 3. **Function of Rods**: Rods contain visual purple (rhodopsin), which is sensitive to light and allows us to see in low-light conditions. This makes them essential for night vision. 4. **Function of Cones**: Cones do not contain visual purple; instead, they contain different photopigments that are sensitive to various wavelengths of light, enabling color vision in brighter light conditions. 5. **Excluding Incorrect Options**: - **Colloids**: These are not related to visual purple or photoreception, so this option is incorrect. - **Ids**: This term seems to refer to the iris or other structures that control light entry but does not relate to visual purple, making it incorrect as well. 6. **Conclusion**: Since visual purple is specifically found in rod cells, the correct answer to the question is option A: rods. **Final Answer**: Visual purple is present in rod cells (Option A). ---
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