Question
How do muscles help in wave-like motion in earthworms ?
✓
Answer
Earthworm do not have skeleton. It moves by the action of muscles. It has two groups of muscles, Circular muscles and lengthwise muscles. They also have hair like setae that act as an anchor so that earthworm can push or pull their bodies. The circular muscles are like a set of rings that surrounds the earthworm. When circular muscles contract the body gets longer and narrower. When the lengthwise muscles contract body gets f licker and shorter. The action of these two muscles, aided by setae, causes a wave-like motion that moves the earthworm through the soil.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Mention the four ways in which vaccines are prepared, giving the name of one disease for which each type of vaccine is used.
How does Hydra move ? Explain with the help suitable diagrams.
How and where is the blood enriched with oxygen in human beings ?
Explain the process of exchange of gases in plants.
Draw a labelled diagram of the urinary system in human beings and describe each part.
Name the different major groups of invertebrates, giving two examples in each case.
Name the tests generally used to diagnose allergy and describe any one of them.
What happens to the nutrients absorbed in the blood stream from the small intestine ?
Differentiate between:
tracheae and tracheoles
tracheae and tracheoles
What are food fads ? Give an example.