Multiple choice

Which of the following is a reptilian feature of a prototherian mammal?

  1. Absence of pinna

  2. Presence of cloaca

  3. Vertebrae without epiphysis

  4. Single and uncoiled cochlea

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Presence of cloaca is a reptilian feature of a prototherian mammal.