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Ora serrata is...

Ora serrata is

A

Anterior edge of sensory portion of the retina

B

Gland present in oral cavity of frog

C

Oral cavity of protochordates

D

A part of sclera

Text Solution

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The correct Answer is:
### Step-by-Step Solution: 1. **Understanding the Term "Ora Serrata":** - The term "Ora Serrata" refers to a specific anatomical structure in the eye. It is the serrated junction that marks the boundary between the retina and the ciliary body. 2. **Identifying the Function of Ora Serrata:** - The ora serrata serves as a transition point from the non-photosensitive area of the ciliary body to the photosensitive area of the retina. This means that it separates the part of the eye that does not detect light from the part that does. 3. **Analyzing the Options:** - **Option 1:** Describes ora serrata accurately as the junction between the retina and the ciliary body. - **Option 2:** Incorrectly states that ora serrata is a gland in the oral cavity of frogs, which is not true. - **Option 3:** Mentions that ora serrata is present in the oral cavity of protocordates, which is also incorrect. - **Option 4:** States it is part of the sclera, which is not accurate. 4. **Conclusion:** - Based on the analysis of the options, the correct answer is that ora serrata is the junction between the retina and the ciliary body. ### Final Answer: Ora serrata is the serrated junction found between the retina and the ciliary body, marking the transition from the non-photosensitive area of the ciliary body to the photosensitive area of the retina. ---
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