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How the Different Plant Phyla Evolved

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Why are some simple plants only found in damp places. Why are flowering plants the most successful on this planet. What is the difference between reproduction in coniferous plants and in flowering plants.
This solution sets out to put in plain english some of the intricacies and complicated vocabulary used in Botany.

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This question has a lot to do with the evolution/ development of different plant species.

Think of the algae, mosses, ferns as being simple (non seed producing) plants and conifers and flowering plants as being seed bearing plants. The latter more advanced than the former.

The first three are limited in their ability to colonise all areas at some stage in their development they are truly water bound,(all due to alternation of generations between different phases in their life cycle but that is another story)and therefore in biological terms cannot be considered truly successful.

Gymmnosperms i.e Conifers and Angiosperms i.e flowering plants, are considered much more advanced plants. A seed is quite an advancement on spores in terms of complexity, survival adaptation etc.

Gymnosperms are said to have naked, exposed seeds and Angiosperms develop seeds within a developed ovary that biologists call a fruit.

To manage to break free from water dependence plants evolved a number of strategies over millions of years.

All Sexual reproduction is about sex, say no more! Sex is about getting ...

Solution Summary

The expert determines how the different plant phyla has evolved.

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Life on earth (biological concepts from the non-science major perspective)

1. Cite one piece of evidence supporting the theory of evolution. Why does it support evolution?

2. Describe one contributing factor to mass extinction.

3. Describe 2 of the following 3 terms and give an example of each (include the example and the organism to which it belongs):
homologous structures, analogous structures, vestigial structures

4. Describe an organism for 3 of the major phylum. Name the organism. What characteristics does this organism possess to include it in this phyla?

5. Why is habitat loss dangerous to a species?

6. Do you feel that human population is subject to the same ecological laws as other populations? Why?

7. What are three adaptations that plants have made for living on land?

8. Biodiversity may be thought of as the diversity of species within an area. Why is biodiversity important to the organisms within a community?

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