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Which of the following characteristic features always holds true for the corresponding group of animals?
- Option 1)
Cartilaginous endoskeleton
Chondrichthyes
- Option 2)
Viviparous
Mammalia
- Option 3)
Possess a mouth with an upper and a lower jaw
Chordata
- Option 4)
3-chambered heart with one incompletely divided ventricle
Reptilia
Answers (1)
Heart in reptilia -
Usually 3-chambered but four chambered in crocodiles.
-
Reptiles have 3-chambered heart except for crocodiles.
Mammals are viviparous except prototherian mammals.
Option 1)
|
Cartilaginous endoskeleton |
Chondrichthyes |
Correct
Option 2)
|
Viviparous |
Mammalia |
Incorrect
Option 3)
|
Possess a mouth with an upper and a lower jaw |
Chordata |
Option 4)
|
3-chambered heart with one incompletely divided ventricle |
Reptilia |
View full answer
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