KINGDOM PROTOCTISTA PDF

TreeMan Post 4 kentuckycat - I think for the most part algae are just used as food for different animals, but I know seaweed is a type of algae, and that has a lot of uses. I have had it in salads and other recipes before. I remember after the BP Gulf oil spill, there was some type of algae that actually "ate" the oil and made the cleanup go a lot faster than anyone had anticipated. I guess that is a plus. On the other hand, though, I think a lot of algae are just an economic loss. Someone already mentioned algae filling up ponds, and it takes money to get rid of that.

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TreeMan Post 4 kentuckycat - I think for the most part algae are just used as food for different animals, but I know seaweed is a type of algae, and that has a lot of uses. I have had it in salads and other recipes before. I remember after the BP Gulf oil spill, there was some type of algae that actually "ate" the oil and made the cleanup go a lot faster than anyone had anticipated.

I guess that is a plus. On the other hand, though, I think a lot of algae are just an economic loss. Someone already mentioned algae filling up ponds, and it takes money to get rid of that. I know I have read, too, about some other type of algae that build huge colonies and float toward shorelines and can kill a lot of animals.

My teacher said that this is the first year she has taught domains even though the idea has been around for a long time. Since the 70s I think she said. Apparently the archaea are sort of like bacteria but evolved differently. According to that system, though, the protists would have to belong in the eukaryote domain, since they have a nucleus.

JimmyT Post 2 kentuckycat - It sounds like maybe you are confusing algae with moss. A lot of people use the two words interchangeably, when in fact they are two very different types of organisms. Mosses do belong to the plant kingdom as do a lot of their close relatives like club mosses and lichens. The stuff that grows on ponds is actually algae, but is usually called moss.

As far as the new groupings go, I think the most accepted system currently involves domains that are one level higher than kingdoms. Like you, when I was in high school we just learned about kingdoms, but once I took some college biology classes, we were expected to know the domains. Maybe someone else can help. They sort of look like some plants, and I thought they usually had some sort of a root system. Maybe not though.

How long have scientists been putting organisms in the five kingdom classification system? I know we talked about those five different kingdoms when I was in school. What would be the new kingdom groupings according to some of the scientists that the article mentioned?

Also, do organisms in the protista kingdom have any good economic uses? I would guess not, but you never know. Post your comments.

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Reino Protista: características, classificação, resumo

Some protists reproduce sexually using gametes , while others reproduce asexually by binary fission. Some species, for example Plasmodium falciparum , have extremely complex life cycles that involve multiple forms of the organism, some of which reproduce sexually and others asexually. Although sexual reproduction is widespread among extant eukaryotes, it seemed unlikely until recently, that sex could be a primordial and fundamental characteristic of eukaryotes. A principal reason for this view was that sex appeared to be lacking in certain pathogenic protists whose ancestors branched off early from the eukaryotic family tree. However, several of these protists are now known to be capable of, or to recently have had the capability for, meiosis and hence sexual reproduction. For example, the common intestinal parasite Giardia lamblia was once considered to be a descendant of a protist lineage that predated the emergence of meiosis and sex. However, G.

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Protista Kingdom of Life

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