Obturator foramen is found in `:`
(a) Frog's pelvic girdle
(b) Frog's pectoral girdle
(c) Rabbit's pelvic girdle
(d) Rabbit's pectoral girdle

Options

A. Frog's pelvic girdle
B. Frog's pectoral girdle
C. Rabbit's pelvic girdle
D. Rabbit's pectoral girdle

Answer

To determine where the obturator foramen is found, we can follow these steps:

1. **Understand the Definition of Obturator Foramen**: The obturator foramen is a large oval opening or sometimes an irregular triangular aperture located in the hip bone.

2. **Identify the Location of the Obturator Foramen**: This opening is part of the pelvic girdle, which is a structure in mammals. The pelvic girdle is formed by the fusion of three bones: the ilium, ischium, and pubis.

3. **Differentiate Between the Options**:
- **Option (a)**: Frog's pelvic girdle - Frogs are amphibians, and the obturator foramen is not found in amphibians.
- **Option (b)**: Frog's pectoral girdle - Again, this is irrelevant as the obturator foramen is not present in the pectoral girdle.
- **Option (c)**: Rabbit's pelvic girdle - Rabbits are mammals, and they do have an obturator foramen in their pelvic girdle.
- **Option (d)**: Rabbit's pectoral girdle - The obturator foramen is not found here either.

4. **Conclusion**: Since the obturator foramen is associated with the pelvic girdle of mammals, the correct answer is (c) Rabbit's pelvic girdle.

**Final Answer**: (c) Rabbit's pelvic girdle

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