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I got this question in a Biology past paper and tried to find the answer on the internet too, so i thought i best answer it for other people :P
i settled with the species are so small that they have a large surface area to volume ratio, meaning they take in quite a lot of oxygen, and because they're so small they don't use up all of this oxygen as quickly as lugworms and other larger species of annelids.
if it's wrong, sorry, i basically just took knowledge and made a logical guess
What else can I help you with?
Why do multi cellular organisms need a ventilation system?
A ventilation system is needed in order to obtain oxygen for living organisms and to get rid of carbon dioxide. Surface diffusion utilized by many smaller organisms is not sufficient in supplying the oxygen needs of the body. It is also needed to maintain a concentration gradient in the alveoli.
How does your body obtain oxygen?
Our body obtain oxygen to our body by breathing.
What is the structure through which crustacean obtain oxygen?
Crustaceans obtain oxygen through gills.
Why do mountaineers carry oxygen with them?
It is because at high altitudes the oxygen is not sufficient..........
Why do small worms not need gills to obtain sufficient oxygen?
i think that, because they're so small, they only rely on a network of trachea, tracheoles and spiracles to supply oxygen - as their small bodies provide a short difusion pathway.i think
How do they obtain oxygen?
Who is "they" ?
Where do you obtain oxygen from?
you obtain oxygen from your lungs you could breath through your nose and through your mouth
How does a multicellular organism obtain oxygen?
multicellular organisms obtain their oxygen through the respiratory system
Why do multi-cellular organisms need a ventilation system?
A ventilation system is needed in order to obtain oxygen for living organisms and to get rid of carbon dioxide. Surface diffusion utilized by many smaller organisms is not sufficient in supplying the oxygen needs of the body. It is also needed to maintain a concentration gradient in the alveoli.
How do humans obtain oxygen?
We obtain oxygen by breathing in fresh air. Carbon dioxide comes out of us.
Does the skeleton obtain oxygen?
No. The skeleton dose not get oxygen
How do pterodactyls obtain oxygen?
Pterodactyls do not obtain oxygen at this time because they are extinct. While they existed, they probably obtained oxygen in the same way that birds today obtain it through the use of lungs.
