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Angiosperms
Hi,
I have a question Angiosperms are considered to be the most highly evolved plants. How are they well adapted to land? answer how plant structures are adapted to their fuction, and one more question What role do plants have in maintaining biodiversity and in the survival of humans(ecological and economical)? thanks |
#2
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Angiosperms
wrote in message
ups.com... Hi, I have a question Angiosperms are considered to be the most highly evolved plants. That's something of a misconception. Arguably, there's no such thing as "most highly evolved". However, some living things have doubtless changed more significantly than some other things have, when compared to their last common ancestor. It makes more sense to compare related organisms feature by feature with one another and with their common ancestors. How are they well adapted to land? Not all of them are adapted to life on land. Many are secondarily aquatic and can't live on land at all. Do any of the terrestrial ones have adaptations to life on land that are not found in any other vascular plants? That's possibly a more interesting question. answer how plant structures are adapted to their fuction, thanks How? By evolution and natural selection. More would require rather detailed discussions of the structures and their functions. and one more question What role do plants have in maintaining biodiversity and in the survival of humans(ecological and economical)? Very major roles. Humans and other animals would have difficulty surviving at all without plants or other photosynthetic organisms. So, when is the exam due? cheers |
#3
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Angiosperms
For the question of how angiosperms are well adapted to land, a basic
botany text usually discusses how plants are well adapted to land. Do you want adaptations specific to angiosperms or reasons why terrestrial angiosperms are better adapted to land than gymnosperms or seedless vascular plants? Try a google.com search for angiosperm adaptations or angiosperm success. Here's one of several articles you will find, Crepet, William L. 2000. Progress in understanding angiosperm history, success, and relationships: Darwin's abominably "perplexing phenomenon." Proceedings of the National Academy of Sciences 97: 12939-12941. http://www.pnas.org/cgi/content/full/97/24/12939 http://www.pnas.org/cgi/reprint/97/24/12939.pdf On the question, What role do plants have in maintaining biodiversity and in the survival of humans(ecological and economical)?, try a google.com search for plant importance, "importance of plants" or economic botany. David R. Hershey wrote: Hi, I have a question Angiosperms are considered to be the most highly evolved plants. How are they well adapted to land? answer how plant structures are adapted to their fuction, and one more question What role do plants have in maintaining biodiversity and in the survival of humans(ecological and economical)? thanks |
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