Which of the following is a characteristic of animals?
a. Photosynthetic
b. Autotrophic
c. Multicellular
d. Cell wall
Answer: c. Multicellular
What is the body plan of a cnidarian?
a. Radial symmetry
b. Bilateral symmetry
c. Asymmetry
d. No definite symmetry
Answer: a. Radial symmetry
Which of the following animals belongs to the phylum Mollusca?
a. Jellyfish
b. Starfish
c. Clam
d. Worm
Answer: c. Clam
What is the body plan of an echinoderm?
a. Radial symmetry
b. Bilateral symmetry
c. Asymmetry
d. No definite symmetry
Answer: a. Radial symmetry (as larvae) and pentaradial symmetry (as adults)
What is the main function of a sponge’s choanocytes?
a. Digestion
b. Movement
c. Respiration
d. Filter feeding
Answer: d. Filter feeding
Which of the following animals belongs to the phylum Chordata?
a. Squid
b. Crab
c. Earthworm
d. Frog
Answer: d. Frog
What is the body plan of a flatworm?
a. Radial symmetry
b. Bilateral symmetry
c. Asymmetry
d. No definite symmetry
Answer: b. Bilateral symmetry
What is the main function of an annelid’s nephridia?
a. Digestion
b. Movement
c. Respiration
d. Excretion
Answer: d. Excretion
What is the main function of a mollusk’s mantle?
a. Digestion
b. Movement
c. Respiration
d. Protection and shell formation
Answer: d. Protection and shell formation
What is the main function of a chordate’s notochord?
a. Digestion
b. Movement
c. Respiration
d. Structural support
Answer: d. Structural support