Question

At the base of the hydra, there is a sticky disc that attaches to rocks and other surfaces. How might this help the hydra survive?


A
It can be used as a weapon against predators

B
It produces a strong smell that keeps prey away

C
It helps the hydra stay in place to catch passing prey

D
It allows the hydra to move from place to place to find food

Answer 1

C

The sticky (pedal) disc anchors the hydra to surfaces so it can remain in place, resist currents, and use its tentacles to catch passing prey.