In which of the following respects do mammals differ from reptiles?
A
Structure of the teeth
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B
Arrangement of the legs
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C
Ability to breed on land
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D
Brighter colours
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Solution
The correct options are A Structure of the teeth D Brighter colours Mammals can replace their teeth only with two sets, but reptiles can replace continuously. Mammals are heterodont, reptiles are homodonts. Some reptiles exhibit brighter colors, mammals do not.
So, the correct option is 'Structure of the teeth' and 'Brighter color'