Question

Pick the odd-one-out from each of the group given below on the basis of respiratory orgns. Give reason for your answer. a) cockroach, grasshopper,snail,ant b) lizard, cow,earthworm,snake c) crocodile, whale ,dolphin,fish d) snake,tadpole,crow,goat.

Answer 1

in option

(a) snails, because it breathe through pulmonata and the rest through spiracles  

(b) cow, because it breathe through lungs and the rest through their skin

(c) fish, because it breathe through gills but the rest through lungs

(d) tadpole, because it breathe through gills and the rest through lungs

Answer 2

ODD-ONE-OUT:

A. The odd one out is snail. This is because a snail breathes through pulmonata whereas the others breathe through spiracles.

B. Cow is the odd one out. This is because a cow breathes using its lungs. The other organisms breathe through their skin.  

C. Fish is odd one out. Fish breathe with the help of gills whereas whale, dolphin and crocodile breathe using lungs.

D. Tadpole is the odd one out because it breathes using gills. The other animals breathe through lungs.