flying frog is

Options

A. Rhacopharus
B. hyla
C. pipa
D. Alytes.

Answer

### Step-by-Step Solution:

1. **Identify the Question**: The question asks, "flying frog is," and provides four options: Rhacophorus, Hyla, Piper, and Elites.

2. **Analyze the Options**:
- **Rhacophorus**: This genus is known for its ability to glide. The flying frog, specifically, is a member of this genus. It can achieve gliding flight at an angle of less than 45 degrees relative to the horizontal.
- **Hyla**: This genus includes tree frogs that primarily live in trees and are found in regions like the South of the Himalayas and Northeast India. They are not known for gliding.
- **Piper**: Known as the Suriname Toad or Star-Fingered Frog, it has a triangular head and is entirely aquatic, meaning it lives in water and does not glide.
- **Elites**: Also known as midwife toads, males carry strings of fertilized eggs on their backs. They exhibit parental care but are not related to gliding or flying.

3. **Determine the Correct Answer**: Based on the analysis, the only option that matches the description of a "flying frog" is **Rhacophorus**.

4. **Conclusion**: Therefore, the correct answer to the question "flying frog is" is **Rhacophorus**.