English Deutsch Français Italiano Español Português 繁體中文 Bahasa Indonesia Tiếng Việt ภาษาไทย
All categories

what arguments would you use to defend that unicellular organisms are more improtant that multicellular organisms?

2006-09-14 10:25:58 · 5 answers · asked by brighton 3 in Science & Mathematics Biology

5 answers

Many unicellular organisms provide the 'grease' that keeps all the multicellular ones alive!

NITROGEN FIXATION. Nitrogen is the greatest limitation on plant growth, and without plants there aren't any animals! Pretty much the only things that covert unusable nitrogen to usuable forms are bacteria. Even plants that supposedly fix nitrogen only do so with the help of symbiotoic bacterial colonies! No nitrogen means no other life!

DECOMPOSITION. Sure, dead things do get picked apart by scavengers, but they would not go away completely if it weren't for the action of lots of microorganisms! This can be seen in environments such as deserts, where scavengers abound but bacteria do not - bodies are mummified and may last indefinitely. If it weren't for all the decomposers, lots of nutrients would be lost to the ecosystem, not to mention that we'd be more than knee-deep in corpses!

PHYTOPLANKTON. These guys are almost all unicellular and do so many things they deserve a class by themselves. They produce most of the atmospheric oxygen. They are the bottom step in the oceans' food chain and therefore support the existance of most of the life in the ocean. They even are partly responsible for the creation of clouds!

All these things are neat, of course, and definitely important. But all the same, I kind of like being multicellular anyway, myself. Hope that helps! ( :

2006-09-14 10:38:57 · answer #1 · answered by Doctor Why 7 · 0 0

i wont say that unicellular r more important than multicellular coz all r gods creation.
in biological terms i would say they r more imp. coz multicellular evolved from unicellular.
but i dont believe in evolution.

2006-09-14 17:48:09 · answer #2 · answered by faisal b 1 · 0 0

Well most unicelluar organisms are at the bottom of the food chain. If the top of the food chain disappears, the rest of the food chain is not affected, but if the bottom of the food chain disappears, the whole food chain will collapse.

2006-09-14 17:35:26 · answer #3 · answered by want it bad 5 · 0 0

unicellular --independent functioning cells

multicellular--more complex and adaptive

2006-09-14 17:34:18 · answer #4 · answered by andria 2 · 0 0

I wouldn't, because overall, they're not.

2006-09-14 17:33:40 · answer #5 · answered by shamand001 2 · 0 1

fedest.com, questions and answers