These tiny marine animals live in marine sands and have the ability to dry out in order to survive harsh in outer space or high temperatures. Sadly, many students think they are not real. This animal belongs to which phylum?

New world monkeys are the closest relatives to apes.

Echinoderms are radial as adults, but bilateral as larvae.

In which of the following pairs are the organisms most closely related taxonomically?

Gastrulation and cleavage only apply to monoblastic development.

Which of the following is not a synapomorphy of phylum Chordata?

Chelicerates all have 8 walking legs.

Sponges are multicellular filter-feeders that have __________ organs?

Deuterostomes first opening becomes the anus.

The extracellular matrix of kingdom animalia contains collagen and peptidoglycans.