Members include jawless fishes.

Which biome is found by the equator and has a high diversity of plants and animals?

These animals have a coelom only around the heart.

These animals use a water vascular system.

Members include tunicates.

Parthenogenesis is when unfertilized haploid eggs develop into new offspring.

Bonus question – Which animal is used to encourage growth of new blood vessels in reattached body parts?

Members include leeches.

Use choanocytes to filter food.

Bonus question – Which animal has the longest penis relative to its body size?