Ms Standardized Test Preparation

DIRECTIONS: Choose the letter of the answer choice that best answers the question.

1. Which of the following structures is found in all modern mammals and birds?

A. hair

B. skull with teeth

C. lungs with air sacs

D. heart with four chambers

2. What is the function of a mammalian diaphragm?

F. enables efficient breathing

G. provides nourishment for young

H. carries the young inside the uterus

J. keeps oxygenated blood separate in heart

3. Which of these animals is a marsupial?

A. lion

B. echidna

C. opossum

D. duckbill platypus

4. Which of these animals is a monotreme?

F. zebra

G. opossum

H. kangaroo

J. duckbill platypus

5. Which of the following structures is found in cats but not in opossums?

A. hair

B. uterus

C. placenta

D. mammary gland

INTERPRETING GRAPHICS: The illustration below shows the skulls of two different mammals. Use the illustration to answer the question that follows.

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