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Evolution and ---cots

Discussion of everything related to the Theory of Evolution.

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Evolution and ---cots

Postby 2810712 » Sun Jan 30, 2005 7:13 am

Monocots R sid to be more evolved than dicots. Why? Monocots show reduction in the no. of some parts eg. petals, germinal pores etc. It is said that reduction in no. indicates further evolution. , why ? Is it true in all cases?
Please help.

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Postby biostudent84 » Sun Jan 30, 2005 8:51 am

Nothing is ever "more evolved" than anything else. Humans are not "move evolved" than bacteria...each species simply evolves to fill it's respective niche. When the niche changes, that is when evolution occurs. Each organism fills their respective niches better than any other organism can.
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Hmm.....

Postby 2810712 » Mon Jan 31, 2005 5:02 am

Nothing is ever "more evolved" than anything else. Humans are not "move evolved" than bacteria...each species simply evolves to fill it's respective niche. Each organism fills their respective niches better than any other organism can.

& What about the answers of the questions in the exams which ask this?Monocots appeared first or dicots appeared first? & from what origin ?
Monocots & dicots play same role in the community so they compete with each other,
so, by saying 'who is more evolved 'i mean 'who is at advantage' as compared to the other eg. in saving energy...........................


When the niche changes, that is when evolution occurs.
When niche changes evolution occurs ,but when evolution occurs niche may or may not change,in the natural conditions, M I right?Please correct me if I M wrong .....
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Hmm.....

Postby 2810712 » Mon Jan 31, 2005 5:02 am

Nothing is ever "more evolved" than anything else. Humans are not "move evolved" than bacteria...each species simply evolves to fill it's respective niche. Each organism fills their respective niches better than any other organism can.

& What about the answers of the questions in the exams which ask this?Monocots appeared first or dicots appeared first? & from what origin ?
Monocots & dicots play same role in the community so they compete with each other,
so, by saying 'who is more evolved 'i mean 'who is at advantage' as compared to the other eg. in saving energy...........................


When the niche changes, that is when evolution occurs.
When niche changes evolution occurs ,but when evolution occurs niche may or may not change,in the natural conditions, M I right?Please correct me if I M wrong .....

hrushikesh
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Postby mith » Tue Feb 01, 2005 5:32 am

If you're saying further evolved as further branched from the ancestral species then yes, some species are more evolved. The important thing is not if an organism has less parts etc...It's how adapted to a specific environment it is. Let's say for example the different intermediary forms of whales. The further advanced form will be more streamlined and have less land locomotion characteristics. So in a sense it has small vestigial organs kinda like your monocots. But we also have to note that other organs are highly developed such as their fins.
So I think if an organism shows many vestigials it would suggest it has been through many different stages and therefore is more "evolved"(I prefer distantly related to an ancient ancestor).
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Postby 2810712 » Tue Feb 01, 2005 6:49 am

thank U for making my question clearer to me . But why R monocots more evolved than dicots? Please help.

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Postby mith » Tue Feb 01, 2005 8:59 pm

Here's what I think. Whenever a species diverges say like when your monocots and your dicots separate into two groups from a common ancestor, one group becomes more and more different(evolved) whereas the other group might maintain the same niche and perhaps not change as much. One example would be the tuatara, one of those ancient lizards from new zealand. They are supposed to be distant relatives of dinos. So way back in time, tuataras diverged from dinos. The dinos got bigger, ate cavemen then died out from high cholesterol(my version of prehistory :lol:). The tuatara stuck to it's ecological niche and hasn't changed much since.
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yes

Postby 2810712 » Sat Feb 05, 2005 1:19 am

Yes, thanx , U made it clearer to me , now I know better what I did mean by 'more evolved' is undergone more steps of changes.
di & mono cots may have common Ncestry but it is also possible that monocots evolved from a group of dicots which existant even today . How did scientists conluded that they had common Ncestors ?

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yes

Postby 2810712 » Sat Feb 05, 2005 1:20 am

Yes, thanx , U made it clearer to me , now I know better what I did mean by 'more evolved' is undergone more steps of changes.
di & mono cots may have common Ncestry but it is also possible that monocots evolved from a group of dicots which existant even today . How did scientists conlude that they had common Ncestors ?

Also, cholesterol? how do U know that , have U hypothesized ? Interesting!

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Postby mith » Sat Feb 05, 2005 11:19 pm

Cholesterol?????
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Postby 2810712 » Wed Feb 09, 2005 5:15 am

. The dinos got bigger, ate cavemen then died out from high cholesterol(my version of prehistory ).

cholesterol? how do U know that , have U hypothesized ? Interesting!


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Postby biostudent84 » Wed Feb 09, 2005 5:08 pm

2810713 wrote:. The dinos got bigger, ate cavemen then died out from high cholesterol(my version of prehistory ).
hrushikesh


Please tell me you're kidding...
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