The sound producing and sound amplifying organs of male frog respectively are 

Options

A. vocal cords, vocal sacs
B. vocal sacs, vocal cords
C. vocal cavity
D. none

Answer

To answer the question regarding the sound-producing and sound-amplifying organs of male frogs, we can break down the solution into clear steps:

### Step-by-Step Solution:

1. **Identify the Sound-Producing Organ**:
- In male frogs, the primary organ responsible for producing sound is the **vocal cords**. These are located in the larynx and are responsible for the generation of sound when air passes through them.

2. **Identify the Sound-Amplifying Organ**:
- The organ that amplifies the sound produced by the vocal cords is the **vocal sac**. This sac acts as a resonating chamber that enhances the sound, allowing it to travel further, especially during mating calls.

3. **Combine the Findings**:
- Therefore, the sound-producing organ is the **vocal cords**, and the sound-amplifying organ is the **vocal sac**.

4. **Final Answer**:
- The correct answer to the question is: **vocal cords (sound-producing) and vocal sac (sound-amplifying)**.