Brown algae: Is in the kingdom protista. Its found in marined and temperate places. The most common places you can find brown algae is in fish tanks! The brown iky stuff that gets on the glass is one of the many species of brown algae. Even though it's super painful to get rid off its known phylum is heterokontophyta.
Red algae: This is also in the kingdom protista but they have different phylums than the brown algae. Red algae are in the phylum rhodophyta. They are found deeper in the water and in temperate zones. They are most commonly found in warmer tropical waters. The Red algae gets it's colour since it refects red while its absorbing the blue pigments. Green algae: Its known that the green algae are the ancestors too land plant. It is in the kingdom protista but is in the phylum chlorophyta. There are 3 forms of algae, unicellular, colonial, and multicellular. Green algae live in all enviroments including fresh, salt, soil ect. |
It was the first aquatic plant that photosynthetic. Plants then slowly evolved creating new charateristics that helped them adapt to the enviroment a lot easier. With out advanced technology we were able to track down the DNA and infact it all lead to green algae which could be the orgin of lang plants.
http://study.com/academy/lesson/the-evolution-of-green-algae-into-land-plants.html
http://study.com/academy/lesson/the-evolution-of-green-algae-into-land-plants.html
Bryophytes are very small plants. An example of a bryophyte would be a moss. The alternation for generation for bryophytes will be the life cycle down below.
Mosses start off by spores. It is a non vascular plant so they will not produce any roots. They will make something close to a root called rhizoids. These rhizoids will help anchor the plants to help them reproduce, After the spores had matured into gametophytes the antheridium will start producing sperms from mitosis. The Archigonium will also produce eggs from mitosis. After they had enough sperm they will swim into the archigonium into the egg to fertilize it. Once an embryo has formed inside the antheridium it will mature into a sporophyte which will make a sporangium. A sporangium has a lot of spores made by meiosis from the embryo. When the capsule falls off the cap the spores are released to start a new generation.
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Pteridophytes are plants like ferns. The alternation of generations for pteridophytes will be the life cycle down below.
Ferns are started from spored as well. The spores become mature into a young gametophyte will than will become a mature gametophyte. The mature gametophyte will be a heartshaped with both antheridium and archigonium. The sperm and egg will be produces by mitosis. The sperm will than make its way into the archigonium where it will become a zygote. A new sporophyte will form and become a mature sporophyte. The fronds (leaf-like structure on a fern) will release the spores to start a new generation.
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Pteridophytes are able to grow taller due to the roots they have. Since they are taller up than the brypphytes they are able to spread more creating a bigger diversity. Pteridophytes are vascular plants when bryophytes are non vascular. They are similar by reproducing from spores and has to be in a moisturized place for them to survive. They both depend on water for reproduction.