Study the given flow chart about respiratory structures in different organisms. Identify the organisms P, Q, R and S and select the correct option.
A P-Cockroach, Q-Tadpole, R-Pigeon, S-Earthworm
B P-Grasshopper, Q-Fish, R-Frog, S-Amoeba
C P-Spider, Q-Frog, R-Crab, S-Paramecium
D P-Mynah, Q-Snake, R-Penguin, S-Leech
Frogs have gills!!!!