Rise of Animal Diversity

The common ancestor of animals arose___ years ago

• 700 mya

• 770 bya

• 700 bya

• 770 mya

Choanocytes are...?

• Cells that digest food

• Cells that carry nutrients

• Flagellated collar cells

Animals likely evolved from...?

• Humans

• Fungi

• Choanoflagellate

• Dinosaurs

The cnidarians are divided into their sessile and motile forms. Which of these are the jellies?

• Hydrozoans

• Scyphozoa

• Anthozoa

What gives coral reefs their pretty green color?

• Zooxanthelle

• Bacteria

• A virus

• Grasses

This is the middle germ layer; muscles & most organs

• Endoderm

• Mesoderm

• Exctoderm

• Extotherm

Which of the following exhibit bilateral symmetry...?

• Starfish

• Sponges

• Cnidaria

• Humans

3 important aspects of animal body plans.......

• Muscles

• Symmetry

• Tissues

• Body Cavities

Animal Diversity increased drastically in/during the _____

• Proterozoic

• Cambrian Explosion

• Eudicarian

• Ocean

This is not considered an animal BUT is learned about in the rise of animal diversity...

• Cnidarians

• Sponges

• Porifera

• Sponges and Porifera