Which Is The Odd Worm?

Biology Level 1

Which of the worms is the odd one out?

Pinworm Roundworm Tapeworm Earthworm

2 solutions

Nihar Mahajan
May 5, 2016

Among the given worms, only earthworm has true body cavity.Furthermore, earthworms aren't parasitic in nature whereas the other usually are parasitic and live in host bodies.

Moderator note:

Isn't that interesting!

Yup, a true coelom. Others are haemocoel or pseudocoelomate :)

Swapnil Das - 5 years, 1 month ago

Hmmm.., have you ever wondered why some worms are parasites and others not? :thinkingface: What characteristic makes them unlike?

Ashish Menon - 5 years, 1 month ago

Who cares? Our only job is to study physics and get rid of them :P

Swapnil Das - 5 years, 1 month ago

@Swapnil Das – :nomouth: jeez

Ashish Menon - 5 years, 1 month ago

I actually picked Pinworm, because the rest are usually hermaphrodites..... I think roundworms are an exception though.

Upamanyu Mukharji - 5 years, 1 month ago

You are correct. Even if not all roundworms, some female species of roundworms are hermaphrodite.

Ashish Menon - 5 years, 1 month ago

I didn't realize this was a biology question. I picked tapeworm because it was the only one with an even number of letters, making it the odd one by not being odd.

Gregory Lewis - 5 years, 1 month ago

LOL!!!!!! ....

Nihar Mahajan - 5 years, 1 month ago

Now isnt that silly :P Better luck next time

Ashish Menon - 5 years, 1 month ago

how biology problem gets level ?? when any problem of bio. is posted we can't assign it level and i have also seen almost every problem of bio. as unrated ..!

sanyam goel - 5 years, 1 month ago

Yes mods assign the level as far as I know. The fact that we cant assign levels 5o biology discourages me 5o posr more bio questions :(

Ashish Menon - 5 years, 1 month ago

So you post problems so that they get rated? That's sad :(

Nihar Mahajan - 5 years, 1 month ago

@Nihar Mahajan – But what if all questions that we post get unrated, isnt that discouraging :( esp one nice subject biology. P.S. I post questions only to do my part of contribution to brilliant not to earn a name :/ Plz dont deduce like that from my statement.

Ashish Menon - 5 years, 1 month ago

@Ashish Menon – How is problem not being rated a "discouraging" thing? Plus I never said that you post problem to "earn a name". Did I? :/ Plz dont deduce like that from my statement.

Nihar Mahajan - 5 years, 1 month ago

@Nihar Mahajan – Alright after going through a lot I am just trying my best to contribute thanks!

Ashish Menon - 5 years, 1 month ago

@Ashish Menon – What if there was no level system on brilliant?

Nihar Mahajan - 5 years, 1 month ago

@Nihar Mahajan – Then I wont mind even if my question has a level or not. Can you do me a favour by telling which wiki is currently planned to be collaborated, maybe I can do my part by adding examples ;)

Ashish Menon - 5 years, 1 month ago

Yes, only moderators/staff can assign level to biology questions, since biology levels are not yet* introduced to the community.We also try to give rating to most of the biology problems, but at the same time, we are not robots to level all the biology problems on brilliant.

Nihar Mahajan - 5 years, 1 month ago

ok, what do you think when will biology level be introduce to the community ?? and how to become a moderator on brilliant??

sanyam goel - 5 years, 1 month ago

A Former Brilliant Member
Apr 6, 2018

Roundworm, pinworm and tapeworm are found on the body. Earthworm are found on soils.