How do hydra take in food?
Licking
Hydra captures their food by paralyzing and killing the food organism by means of nematocysts, which are discharged into the prey. They, eat worms, insect larvae, small crustaceans, larval fish, and other invertebrates. They use their stinging cells to stun, entangle, or kill their prey before eating it. Whereas hummingbirds take in food by licking. A hummingbird licks nectar up, like a dog lapping at a bowl of water. It can lick 10-15 times per second while feeding. earthworm eats by pulling food into their mouth with the help of nose like opening called prostomium. Amoeba eats bacteria algae and other small organisms. it engulfs tiny food particle with the help of pseudopodia.