Question

Choose the correct answers from the alternatives given.
The chitinous bristles that earthworms use to anchor themselves in the earth and pull themselves along are:

• A. aortic arches
• B. setae
• C. parapodia
• D. nephridia

Answer 1

The correct option is B setae

An earthworm has 100 to 150 body segments, each having muscles and bristles. An earthworm's setae are so tiny, they're almost invisible. He uses them to anchor himself while navigating in the soil, or when a bird is trying to pull him from the ground. The setae is a stiff structure resembling a hair or a bristle, especially in an invertebrate.

So, the correct option is, 'setae'.