fbpx

πŸ› Annelida (e.g. earthworm) body form

Earthworms are also bilaterally symmetrical like flatworms, but instead of being flat, they are round in transverse section (widthways), as well as being segmented metamerically. Metameres are repeating sections in an organism that have the same structure, although may accomplish different functions based on their tissue distribution and specialisation.

 

 

For example, the gut is specialised between the metameres, and the earthworm has both a mouth and an anus for continuous digestion.

 

A hydrostatic skeleton is present, formed from the body cavities of each…

πŸ† Read 500+ topics for all 6 UK exam boards πŸ†

πŸ“ Enter now to claim your FREE 3-day trial and find answers to all your revision topicsΒ πŸ“

βœ”οΈ Just Β£3.49/month after that. Cancel anytimeΒ βœ”οΈ

You explain everything so simply!Β πŸ™‚Β -SecretDuck on The Student Room