Question
List out some common features in cat, rat and bat.
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Answer
Cat, bat and rat belong to the class-Mammalia and have following common features:
- All have notochord at some stage of their lifecycle.
- All are warm-blooded.
- All have four-chambered heart.
- All have skin covered with hair and have sweat and oil glands.
- Body is divisible into head, neck, trunk and tail.
- Females have milk producing mammary glands.
- Fleshy external ear (pinna) is present.
- Respiration is through lungs only.
- Excrete urea (ureotelic animals).
- Fertilisation is internal.
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