Characteristics of birds but not of mammals include which of the following?
|.||Giving birth to live young|
Select an Answer
, , and
This type of question requires you to look at the choices , , and , and decide which combination of characteristics belongs to birds and does not belong to mammals. The correct answer is feathers only, (A). Clearly, most mammals give birth to live young, so is not part of the correct answer. This rules out choices (C) and (E). Four chambered hearts are also characteristic of mammals (humans, for instance) so choice is not part of the correct answer. This rules out choices (B) and (D).