Homework Quiz #20
This quiz is based on homework assignments from the Holt Modern Biology Textbook.
- 1.How does the heart of a mammal differ from the heart of a lizard?
- 2.List two unique features of a bird's skeleton.
- A.
Skeleton is made of cartiliage and is rigid
- B.
Skeleton is made of hollow bones and is lightweight
- C.
Skeleton is heavy and sturdy
- D.
Skeleton is made of pores and air sacs
- E.
Skeleton is dry and hard
- 3.What are two functions of feathers?
- A.
Strength and support
- B.
Wind resistance and control
- C.
Beauty and appearance
- D.
Flight and insulation
- E.
None of the avove
- 4.Describe two characteristics shared by Archaeopteryx and modern birds.
- A.
Covered in feathers and have wings
- B.
Have hollow bones and and a furcula
- C.
Have beaks and tails
- D.
All of the above
- E.
None of the above
- 5.In what way does a gizzard compensate for the lack of teeth in birds?
- A.
The gizzard digests food for the bird
- B.
The gizzard rips food for the bird
- C.
The gizzard mashes food for the bird
- D.
The gizzard grinds food for the bird.
- E.
None of the above
- 6.What is the function of the keeled sternum?
- A.
To help with running
- B.
The attachment point for the gizzard
- C.
The attachment point for some of the flight muscles
- D.
All of the above
- E.
None of the above
- 7.How does hair help a mammal maintain its body temperature?
- A.
Hair protects the body helping to retain body heat
- B.
Hair suppots the body helping to retain body heat
- C.
Hair calms the body helping to retain body heat
- D.
Hair insulates the body helping to retain body heat
- E.
None of the above
- 8.Why was it advantageous for the early mammals to be nocturnal?
- A.
To be protected from the sun
- B.
To avoid competition and being eaten by larger animals
- C.
To protect their young
- D.
All the best food can be found at night
- E.
None of the above
- 9.A mammal eats about 10 times as much food as a lizard of the same size. Explain this difference.
- A.
A mammal needs more food to fuel its rapid metabolism than a lizard
- B.
A mammal needs more food to keep its teeth stronger than a lizard
- C.
A mammal needs more food to hunt more so than a lizard
- D.
A mammal needs more food to keep it warm than a lizard does
- E.
None of the above
Questions: 8 | Attempts: 1319 | Last updated: Mar 21, 2022
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