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Mammals (Grade 10)

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Which characteristics do mammals and birds share?
  1. dry scaly skin
  2. live birth
  3. ectotherms
  4. endotherms
Which of these is a distinguishing feature of a mammal?
  1. has scales
  2. gives live birth
  3. produces milk
  4. lays eggs
Which of these organisms is an example of a mammal?
  1. a great white shark
  2. a praying mantis
  3. a spiny lobster
  4. a duck-billed platypus
Which group of mammals is characterized by laying eggs?
  1. the monotremes
  2. the placentals
  3. the marsupials
  4. the chondrycthes
Which of these is the grouping of mammals kangaroos belong to?
  1. the placentals
  2. the monotremes
  3. the osteicthyes
  4. the marsupials
Which group of mammals has offspring that look very similar to the parents at the time of birth?
  1. the placentals
  2. the marsupials
  3. the monotremes
  4. the succulents
How does body temperature in mammals differ from that of reptiles?

Mammals are unique among animals in that they are the only group to have                to keep them warm.
Mammals are the only animals that are able to use both sexual and asexual reproductive methods to produce offspring.
  1. True
  2. False
In the evolution of the great whales, it is believed that their ancestors migrated from the land into the sea. Which of these is thought to be the closest living relative to the whales?
  1. the elephant
  2. the great white shark
  3. the hippopotamus
  4. the rhinoceros
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