The most plausible hypothesis to explain why species richness is ...

Question

The most plausible hypothesis to explain why species richness is higher in tropical than in temperate regions is that
a. tropical communities are younger.
b. tropical regions generally have more available water and higher levels of solar radiation.
c. higher temperatures cause more rapid speciation.
d. diversity increases as evapotranspiration decreases.

Accepted Answer

Hello everyone. And in today's video we have the following problem. So all of the following statements are characteristics of tropical biofilms except so I want you to pay close attention to this word except because we're going to be looking for the exception or the false statement between our answer choices. So now that we know this and since we're talking about tropical bios, let me quickly remind you about a very important or very popular tropical bio mom that will be using in order to solve these problems. And these are gonna be tropical rainforests. So we have that tropical rainforests, they contain the highest levels of biodiversity among all biomass on earth. And so they're going to have a lot of plants, species and a lot of animal species and so on. And the reason for this is that because they obtain a lot of sunlight and moisture because of their position in the equator and so the sunlight and moisture, this extra sunlight and moisture they correlate to just increase metabolism in the producers in that rainforest. And so that equates to an increase in the level of biodiversity. So extra species being just coexisting in that bio And so now that we know this. Let's quickly go over answer choices so that we can use this definition to solve the problem. First of all, you have answer choice. A species richness is higher in a tropical bio. Well, this species richness is correlated with biodiversity. And we already said that tropical bios have the highest levels of biodiversity. So we're going to cancel us out as it's not a false statement. Moving on, we have the choice be tropical bios have a higher level of solar radiation. So now because of their position in the equator, these um these bios this tropical by OEMs obtain the highest levels of just solar radiation on earth, which as we can see here, is then translated in extensive metabolism for the producers that access there. So we're going to actually cancel it out as well as being as not being a false statement. And moving on, we have answer choice. C tropical biomass, have more availability of water looking here with their very moist environment according to our definition. So we're going to cancel that answer choice as well as it's not false. It's actually a true answer choice. And finally, we have answer choice. D tropical bygones face severe summers and winter seasons. This is actually not true. According to our definition, we have nowhere there about the impact of summer and winter seasons in tropical by um so we're going to highlight this answer choice as being the only exception or the false statement between all of our answer choices. And so that's going to be the end of the video. I really hope this helped you. And I hope to see you on the next one

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