[Campbell Biology P.44] Among the defining characteristics of Mammals listed, which one is ... | Practice Question

Among the defining characteristics of Mammals listed, which one is common to all mammals, distinguishing them from other amniotes?

  • A: Terrestrially adapted egg
  • B: Presence of hair and production of milk
  • C: Having a large brain
  • D: Bipedal locomotion

Explanation

CONCEPT 34.6 explicitly states that 'Mammals are amniotes that have hair and produce milk'. The other options refer to characteristics of broader groups Amniotes or more specific subgroups Humans .