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    				| 1. | How do you differentiate a frog from a toadA. Frog has no exoskeleton but toad had scalesB. Frog respires through lungs but toad respires through skinC. Frog has a tail but toad has not tailD. Frog has no parotid glands but toad has a pair of parotid glands | 
| Answer» Correct Answer - D | |