Lower animals & Invertebrates

21. What is the phylum of animals that includes snails, slugs, and clams?

a) Porifera

b) Mollusca

c) Arthropoda

d) Echinodermata

22. What is the body plan of an octopus?

a) Bilateral symmetry

b) Radial symmetry

c) Asymmetrical

d) Spherical

23. How do cnidarians capture their prey?

a) By hunting on land

b) By using their stinging cells

c) By camouflage

d) By producing toxins

24. Which of the following is a characteristic of flatworms?

a) They have a hard exoskeleton

b) They have segmented bodies

c) They have jointed appendages

d) They are hermaphrodites

25. How many legs do crustaceans typically have?

a) 4

b) 6

c) 8

d) 10