Multiple choice

Eutherians are characterized by

  1. I-t skin

  2. True placentation

  3. Ovoviviparity

  4. Glandular skin
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The placenta (also known as afterbirth) is an organ that connects the developing fetus to the uterine wall to allow nutrient uptake, waste elimination, and gas exchange via the mother's blood supply, fight against internal infection and produce hormones to support pregnancy.

Keep practicing — related questions