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Angiosperms

'angiosperms'

[media:Any [[member of the more than 250,000 Species of flowering plants (division magnoliophyta) having roots, stems, leaves, and well-developed conductive tissues (xylem and phloem). Angiosperms are often differentiated from gymnosperms by their production of seeds within a closed chamber (the ovary). Example: Aplle trees and all fruit trees. The ovary wall is actually the fruit. The magnoliophyta division is composed of two classes, the monocotyledons (liliopsida) and dicotyledons (magnoliopsida).

]]]

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New theory of evolution

... applications in different disciplines, has important meaning for biology. Simple plants and gymnosperms include above 150 thousands specieses, angiosperms above 250 t. specieses, fungi 1,5 mln, insects about 1 mln, primitive animals tens thousands, fishes 24,5 t., reptiles 13 t., birds 9350, ...

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by SystemRGB
Fri Nov 14, 2014 11:45 pm
 
Forum: Evolution
Topic: New theory of evolution
Replies: 0
Views: 816

Diffusion

... is a counter current flow of water and blood that maintains a partial pressure gradient down which 02 diffuses from water into the blood. For Angiosperms....This one was tough for me...I think that I should be talking about Angiosperms dependency on their ability to balance water uptake and ...

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by killian07
Mon Dec 12, 2011 4:23 am
 
Forum: General Discussion
Topic: Diffusion
Replies: 2
Views: 4133

Diffusion

... what the implications would be for all three example groups if diffusion were impaired (but not completely blocked) in that system. Groups: angiosperms, fish, humans.

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by killian07
Sun Dec 11, 2011 9:57 pm
 
Forum: General Discussion
Topic: Diffusion
Replies: 2
Views: 4133

Re: Basal Angiosperms

Nobody who knows how to define basal Angiosperms? The characteristics that differ from monocotyls en dicotyls It may be a question on my exam tomorrow So please help :)

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by Lucanus cervus
Mon Sep 05, 2011 6:38 pm
 
Forum: Botany Discussion
Topic: Basal Angiosperms
Replies: 2
Views: 3642

Basal Angiosperms

Hi! My professor asked me whether Peperomia plants (and Piperales in general) are recognisable as basal Angiosperms. I looked everywhere in my syllabus and on the internet, but can't find a good answer... So my question is: What character states define Basal Angiosperms? I ...

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by Lucanus cervus
Sat Sep 03, 2011 8:53 pm
 
Forum: Botany Discussion
Topic: Basal Angiosperms
Replies: 2
Views: 3642
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