MCQ
Choose correct sentence for Amphibia.
- ✓Fertilization is external and development is indirect.
- BThey are oviparous or viviparous.
- CThe animal dies after breeding.
- DThe skin is scaly.
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Select appropriate choice for the blanks $A, B$ and $C$ to complete the given $NCERT$ statement
$I.$ methane
$II.$ carbon dioxide
$III.$ oxygen
$IV.$ ethane
Choose the correct option