bufo diggers from Bull frog Rana in

Options

A. Absence of teeth and non - bifurcated tongue
B. non -amplexus
C. absence of vocal sacs
D. without glands.

Answer

**Step-by-Step Solution:**

1. **Identify the Organisms**: The question asks about the differences between Bufo (toad) and Bullfrog (Rana). The scientific name for Bufo is Bufo melanostictus, and for Bullfrog, it is Rana tigrina.

2. **Understand the Characteristics**:
- Bufo (toad) has dry and rough skin.
- Rana (bullfrog) has smooth and moist skin due to the presence of skin glands.

3. **Examine the Teeth**:
- Bullfrog (Rana tigrina) possesses a well-defined set of teeth in the upper jaw.
- Toad (Bufo melanostictus) lacks teeth.

4. **Examine the Tongue**:
- Bullfrog has a bifurcated (forked) tongue, which is useful for catching prey.
- Toad does not have a bifurcated tongue; it is non-bifurcated.

5. **Review the Options**: The options provided in the question are:
- Absence of teeth and non-bifurcated tongue
- Non-amplexus
- Absence of vocal sacs
- Without glands

6. **Analyze Each Option**:
- **Absence of teeth and non-bifurcated tongue**: This is correct as Bufo lacks both features.
- **Non-amplexus**: Incorrect, as both species exhibit amplexus during mating.
- **Absence of vocal sacs**: Incorrect, both species have vocal sacs.
- **Without glands**: Incorrect, as bullfrogs have skin glands that keep their skin moist.

7. **Conclusion**: The correct answer is that Bufo differs from Bullfrog Rana in the absence of teeth and non-bifurcated tongue.

**Final Answer**: Bufo differs from Bullfrog Rana in the absence of teeth and non-bifurcated tongue.

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