Q: Female monotremes lack a uterus and vagina. instead they have what?


Read this paragraph and choose the correct option from the provided answers:

Female monotremes lack a uterus and vagina. Instead, they have a cloaca with one opening, like the cloacas of reptiles and birds. The opening is used to excrete wastes as well as lay eggs.

 Choices:

- endometrium

- placenta

- urethra

- cloaca


A:
cloaca