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These animals have a coelom only around the heart.

Parthenogenesis is when unfertilized haploid eggs develop into new offspring.

These animals have a closed circulatory system and nephridia.

There are three characteristics a eukaryotic organism must have to be an animal. Which one does not belong?

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

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

These animals are all asymmetrical.

Show the four chordate characteristics in larval form only.

These animals have nerve nets.

From the most inclusive to the least inclusive, what is the correct order in the hierarchy of taxa?