For their respiration, birds, whales and seals use

Options

A. Book lungs
B. Gills
C. Lungs
D. Skin

Answer

**Step-by-Step Solution:**

1. **Identify the Animals**: The question mentions birds, whales, and seals. We need to determine the type of respiration these animals use.

2. **Classify the Animals**:
- Birds belong to the class Aves.
- Whales and seals are classified as mammals, specifically aquatic mammals.

3. **Understand the Respiration Mechanism**:
- Birds and mammals (including whales and seals) primarily use lungs for respiration. This is a key characteristic of these groups.

4. **Eliminate Incorrect Options**:
- **Book lungs**: These are found in arachnids like spiders and scorpions, not in birds or mammals.
- **Gills**: These are used by aquatic animals like fish, but whales and seals are mammals and do not use gills.
- **Moist skin respiration**: This is typical in amphibians like frogs, not in birds or mammals.

5. **Conclude the Answer**: Since birds, whales, and seals all use lungs for respiration, the correct answer is that they use lungs.

**Final Answer**: Birds, whales, and seals use lungs for their respiration.

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