Name the organs of respiration in the following organism:
(a) Flatworms = ---------- (c) frog =--------
(c) Cockraoch =--------

Explanation

To answer the question regarding the organs of respiration in the specified organisms, we will analyze each organism one by one.

### Step-by-Step Solution:

1. **Flatworms:**
- Flatworms, such as planarians, do not have specialized respiratory organs. They perform respiration through their **body surface**.
- They absorb oxygen directly from the surrounding water and release carbon dioxide through a process known as **diffusion**.

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