Which of the following structures are absent in forelimb of frog ?
(a) Brachium (b) Web
( c) Antebrachium (d) Tarsal

Options

A. (a) and (b) are correct
B. (b) and (d) are correct
C. (a) and ( c) are correct
D. (a), (b) and ( c) are correct

Answer

To determine which structures are absent in the forelimb of a frog, we need to analyze the options provided:

1. **Understanding the Structures**:
- **Brachium**: This refers to the upper arm region. Frogs do possess a brachium in their forelimbs.
- **Web**: Frogs have webbed feet, but this is primarily associated with their hindlimbs for swimming. The forelimbs do not have webbing.
- **Antebrachium**: This is the forearm region, which is present in frogs.
- **Tarsal**: Tarsals are part of the ankle region, which is not present in the forelimbs of frogs.

2. **Analyzing the Options**:
- (a) Brachium: Present in the forelimb.
- (b) Web: Absent in the forelimb.
- (c) Antebrachium: Present in the forelimb.
- (d) Tarsal: Absent in the forelimb.

3. **Conclusion**:
Based on the analysis, the structures that are absent in the forelimb of a frog are:
- Web (b)
- Tarsal (d)

Thus, the correct answer is **(b)** which states that the web and tarsal are absent in the forelimb of the frog.

### Final Answer:
The structures absent in the forelimb of a frog are **Web (b)** and **Tarsal (d)**.