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Get Answers to all your Questions
- #Class 11
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Which one of the following animals has two separate circulatory pathways?
Option: 1
Lizard
Option: 2
Whale
Option: 3
Shark
Option: 4
Frog
Answers (1)
Class Mammalia - Characteristics Features -
- These are the vertebrates that possess hair and mammary glands.
- Mammals are endothermic.
- They show the presence of external ear called pinna.
- The development of teeth occurs in the jaw socket (thecodont); teeth can be classified as incisors, canines, molars and premolars (heterodont); the milk teeth are replaced by permanent teeth (diphyodont).
- They have a four chambered heart with double circulation.
- Respiratory, excretory, nervous and reproductive systems are highly developed.
- Whale is a mammal and it has a fourchambered heart.
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