what is the evolution of the mega flora?
451680
Trees evolved multiple times,  Ferns, club mosses, horsetails, gymnosperms, monocots, and dicots have all evolved giant varieties.  The same could be said in water regarding large sea "plants" such as kelp.
316138
You are asking two very different questions here, and I will address each seperately.\n\n"Are, Say, Giraffes More Evolved Than, Say, Squid or Amoebas?"\n\nNo. All life currently on Earth has had ancestors evolving for the same length of time, as all life shares a common ancestor. You might argue that the more generations something has been evolving, the more 'evolved' it is, in which case, bacteria like E. Coli are the most evolved. I consider generation length to be a function of evolutionary adaptation, so I would say that between two organisms which are alive at the same time, neither is more evolved than the other.\n\nAs for your second question,\n"Are some organisms more "advanced" than others?"\n\nSure. It all depends on what you mean by "advanced". Eukaryotes are certainly more complex than prokaryotes, for example, so if you defined "advancement" as "number of cells", then blue whales are probably the most advanced organisms. If you define "advancement" by the number of cell types, well, I have no idea what's the most advanced, but it might be "mammals" or something; regardless, it's probably a pretty big group.
632978
well its what you are interested in\nif plants- do something about plant evolution\nif animals- major extinction of animals\nwell thats what i did. got an "A" for it
895938
The flowering plants, the largest group in the plant kingdom, with about 250,000 species.
291260
Adaptation? Evolution?
638558
The first step would be a really big die-off and a collapse of civilization.  Other than slowly acquiring some negative traits, not much will happen in terms of physical evolution in the mean time.\n\nAfter this die-off, we will find ourselves in a world without the megafauna alongside of which we initially evolved.  These animals have since gone extinct.  Our food will have to be smaller and more frequent instead of big and less frequent.  As a result, I would predict a reduction in body size to more efficiently utilize resources from small to medium sized prey.
403629
The Dolphin as a spices is billions of years old. So to answer your question they evolved from sea dinosaurs.
868588
The first trees (big plants [30 meters] with woody stems) evolved about 360 million years ago.
307239
I don't think you will get a satisfying answer becausae you worded your question in a rather confusing fashion.\n\nIf you don't want to discuss natural selection, don't use the word evolution at all.  Ask about Big Bang Cosmologies instead.
19199
billions and billions of years.
765804
When there is a good nurishing environment, the offspring of the animals will gradually becomes larger and larger.    I guess for millions of years, the successful dinosaurs were good in beating the competitions and becomes bigger and stronger.  The survival of the fittest.    \n\nThere were big and giant animals even after ice age.   But most of them were extincted by humans.   Like the mammoths, the giant sloath, the sabertooth tiger, etc.\n\nThe evolve of the man kind has either hunt the animals to extinction or destroyed the habitat that the larger animals do not have enough space or food to survive.\n\nAnother good example is the fishes we catch today. Compare to 50, 60 years ago, the fish we catch today is smaller and fewer than before.    It is contributed to the overfish and pollution created by human.
1142498
No. Most life forms did not evolve from plants. Simple single-celled life was first, microscopic organisms at one point called protists and at another point moved into its own kingdom, bacteria. The first primitive multicellular animals preceeded plants by a few million years.
71929
i dont know what BioGeek is talking about but as far as i know phylum bryophyta refers to mosses\n\nBryophytes used to be classified as three classes of a single phylum, Bryophyta. Modern texts, however, now assign each class to its own phylum: Mosses (Bryophyta), Liverworts (Hepatophyta), and Hornworts (Anthoceraphyta). This reflects the current taxonomic wisdom that the Liverworts and Hornworts are more primitive and only distantly related to Mosses and other plants.
199584
"Macro-evolution" is a theory inasmuch as evolutionary events that have purportedly occured over millions of years and resulted in the appearance of new species can not be experimentally reproduced or observed. In contrast, "Micro-evolution," which describes genetic change within a particular species, has been observed and can be witnessed over and over again. \n\nThe mechanics of micro-evolution are most evident in lower order organisms such as bacteria, viruses, insects, etc. Just think about cockroaches and how quickly, in a matter of a few generations they can adapt to certain pesticides and become immune to them. \n\nThe reason why macro-evolution has been readily accepted as fact when it really isn't is because the principles of micro-evolution have been extrapolated to the illogical conclusion that species can go through so many minor genetic changes that they eventually become entirely new species. This has not been proven and unless you are able to live millions of years or be able to maintain documentation that lasts that long, macro-evolution can NEVER be proven.
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What are the major taxonomic categories that we use to organize all life on earth -- species, genus, family, order, phylum, etc?  How many Kingdoms are there and how are they determined?  Give the full taxonomy for Homo Sapiens.\n\nWhat is DNA?  What is RNA?  Describe the steps of RNA transcription.  What is mitosis?  Decribe the steps of mitosis.  How is this different from mieosis?\n\nWhat is a gene?  What is the difference between phenotype and genotype?  What is a dominant gene?  What is a recessive gene?  Why is a dominant gene dominant?  What are the other kinds of gene relationships (co-dominance, etc.)  \n\nDescribe the Theory of Evolution.  What was the evidence Darwin found to come up with the Theory.  How do species evolve over time?  What is speciation and give three examples of how different species can evolve?  What is mutation?  What other times of gene changes are there that are related to evolutionary development?\n\nWhat is an ecology? What are the various types of relationships between species (predation, parasitism, mutualism, commensalism, etc.) and give examples of each. What sort of defenses do species develop against predation?  What sort of features do predators develop in return?\n\nWhat is reproduction?  What are the different kinds of reproduction?  How does reproduction differ between various plant species?  Between animal species?  What are some examples of (I forget the term but) animal features/behaviors that serve only to help with reproduction?  How do these evolve?\n\nWhat is a bacteria?  What is a virus?  What are the differences between prokaryotes and eukaryotes?  What are the major organs in a prokaryotic cell/organism?  How about a eukaryotic cell/organism?  What do each of these do?  What is the current theory on how mitochondria evolved?  What is special about the cell wall and how does it allow material to get across it?  What about the cell nucleus?\n\nWhat is involved in genetic science?  What sorts of things can genetic science do and what are the tools?  What is gene splicing?  What is genotyping and genetic sequencing?  How do these work?\n\nDescribe the major organs and organ systems in the human body.  What is the function of each?  What is the structure of each.  What are some examples of tissue types and how do you recognize them under a microscope?  What are some of the major diseases that humans suffer and what are the symptoms and cures for each?  How is food processed by the digestive system and which food elements are digested in which organs?  What are the more important hormones and neurotransimitters in the human body and what does each do?  \n\nDescribe the different groups of organic molecules important to life -- proteins, carbohydrates, lipids, etc.  What is the molecular structure of each and how are they different?  What is the importance of each and what is their function in the human body?  What is an amino acid?  How many are there, and what do they do?\n\nAnd so much more ... sheesh.
292131
Different plants and animals have different abilities to adapt.  Plants like Kudzu and Russian Thistle adapt quickly to new environments, while certain orchids and flowering plants are very sensitive to changes.  The same holds true to animals-gorillas seem very sensitive to environmental changes, while closely related chimpanzees are much hardier.  If there is an extreme enough change, most plants and animals will die, as has happened a number of time in history-but, the dominant life on Earth, bacteria, will adapt just fine.
36150
1. Triploblasty evolved after diploblasty\n\n2. Triploblasty is more complex than diploblasty.\n\n3. Triploblasty gives rise to more complex organisms thatn diploblasty.