Lower animals & Invertebrates

6. Which of the following is a characteristic of sponges?

a) They have a hard exoskeleton

b) They have stinging cells

c) They have spiny bodies

d) They are filter feeders

7. Which of the following is a type of invertebrate?

a) Jellyfish

b) Seahorse

c) Penguin

d) Elephant

8. How do earthworms respire?

a) Through gills

b) Through lungs

c) Through spiracles

d) Through their skin

9. Which of the following is a phylum of marine invertebrates?

a) Porifera

b) Platyhelminthes

c) Echinodermata

d) Annelida

10. Which of the following may have a radula?

a) Octopus

b) Starfish

c) Flatworm

d) Snail