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What are the key roles or niches that organism fill in their habitat?
Wiki User
∙ 14y ago
The key roles or niches that organisms fill in their habitat are producers, primary and secondary consumers (herbivores, carnivores and omnivores), predators, prey, scavengers and decomposers.
Wiki User
∙ 14y ago
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Why do adaptive radiations often occur after mass extinctions?
After a mass extinction event many niches are left empty. New species eventually evolve and fill the niches where competition would otherwise have prevented such evolution.
Why are there more inveratbrates on earth than vertabrates?
Faster breeding cycles equate to faster rates of evolution and speciation.Additionally their small size means there are more ecological niches for them to fill.
How is a biofilm different from a multicellular organism?
multicellular organisms are usually made up of specialised tissues that make up organs (a noteable exception is sponges). biofilms are made up of either a sinlge species or several species that fill niches in the biofilm ecosystem (one could liken the different species to different organs, providing different services to the biofilm as a whole).
What is an isolating mechanism and how does it create a situation leading to speciation?
Water (islands), mountains, as well as deserts act as isolating mechanisms. Continental Drift resulted in the isolation and subsequent development of animals that are genetically quite different that fill similar niches in the isolated environments. A comparison of animals that fill similar niches in Australia as compared to the US or Africa yields Kangaroos and Wallabies that fill the same niches as deer and antelope. Initial speciation begins as as better adapted animals occupying a niche push the marginalized individuals out into other areas where any unique genetic characteristics or mutations that make them better able to adapt to a new niche are selected for based on survival rate.
What is a mammals ecological niche?
The extinct dog-like mammals are from a biological family of carnivorous mainly called Canidae. The Canidae includes almost 34 species from the manned wolf to bush dogs (short in length).
What niches populate bacteria fill?
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Why do new species form on new islands?
they evolve to fill new niches
How did adaptive radiation affect plants after they moved to land?
They evolved to fill the niches found on land.
Why doe new species often form new on new islands?
they evolve to fill new niches
What did extinction of dinosaurs lead to?
volcanoes, floods, earthquakes and tornadoes
Can an organism fill more than one organism?
Yes, when their diet varies they can fill more than one trophic level
Why has there been a burst of evolution after each of the great mass extinctions?
After a mass extinction, there are many open niches. The surviving organisms quickly begin to take advantage of the open niches. As they do, they evolve into new forms, better adapted to these new, separate niches. Hence, many new species quickly evolve and fill the void.
Why is there destruction of habitat in Madagascar?
Cause they fill like it.
Why are grass hoppers different from frogs?
Grasshoppers are different from frogs because these two species have evolved to fill different ecological niches.
The place where an organism lives and that provides the things the organism needs?
Biomes or ecosystems fill this description.
When hard minerals fill an imprint of an organism they eventually form a model of the organism called a?
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What do geckos lookalike?
Because most species of gecko will fill similar ecological niches, and it is the most succesful design for filling said niche
