3. Setae are present in (a) Fish O (b) Earthworm O (c) Hydra 4. Which of these animals moves with a muscular foot? (a) Cockroach O (b) Earthworm O (c) Snake 5. This is a unicellular organism. (a) Amoeba O (b) Snail T:11 O (c) Snake O (d) Cockroach O (d) Snail O (d) Fish​