Question Detail

ZOO 101 ZOO 101 Past Questions Objective Question
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Question

The slides state that humans are characterized by which TWO hallmark features that define the class Mammalia?
Options
A Feathers and warm-bloodedness
B Body hair and milk-producing mammary glands (in females)
Correct Answer
C Scales and amniotic eggs
D External gills and a two-chambered heart
Correct Answer

Option B is the correct answer.

Detailed Explanation

Mammals, including humans, are defined by the presence of body hair (at some life stage) and mammary glands that produce milk to nourish young. These are the two diagnostic features of the class Mammalia.

Hint

These two features are unique to mammals and give the class its name.

Question Info

Course: ZOO 101
Topic: ZOO 101 Past Questions
Type: Objective
Difficulty: Not specified
Question 954 of 2214
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