Comb - shaped vascular structure present in the eye of birds is

Options

A. carina
B. furcula
C. pecten
D. pygostyle

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: We need to identify the "comb-shaped vascular structure" found in the eyes of birds.

2. **Analyzing the Options**:
- **Option A: Carina**: This term refers to the extension of the breastbone in birds. It is not related to the eye, so this option is incorrect.
- **Option B: Farcula**: Known as the wishbone, the farcula is a forked bone in birds located in the thoracic region. It also has no relation to the eye, making this option incorrect as well.
- **Option C: Pectin**: This is described as a soft vascular structure that is comb-like and is indeed present in the eye of birds. This option appears to be correct.
- **Option D: Pygostyle**: This refers to a structure at the posterior end of the spinal column in birds. It does not pertain to the eye, so this option is also incorrect.

3. **Conclusion**: Based on the analysis, the correct answer is **Option C: Pectin**, as it is the soft vascular, comb-like structure present in the eye of birds.

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