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Anonymous
Anonymous asked in Science & MathematicsBiology · 10 years ago

Which of these protists is the easiest to do research?

euglena

diatom

amoeba

plasmodium

dinoflagellate

In other words, which of these protists would have the most info on these questions?

-What are it characteristics?

-Where does it live?

-What lifestyle does it belong to? (Is it plantlike, animallike, or funguslike?)

Thanks

-How does it carry out its life functions?

Update:

I meant Which of these protists is the easiest to do research ON?

1 Answer

Relevance
  • 10 years ago
    Favorite Answer

    You'll be able to find much information regarding all of these micro-organisms.

    However, I find euglena amusing, as they appear to have "everything."

    Euglena is a genus of unicellular protists, of the class Euglenoidea of the phylum Euglenozoa (also known as Euglenophyta). Currently, over 1,000 species of Euglena have been described.

    >Lifestyle

    Some Euglena are considered to have both plant and animal features. Due to these dual characteristics, much debate has arisen about how they should be classified. In binomial nomenclature, according to the five-kingdom classification scheme, euglena have been accurately placed into Kingdom Protista, more specifically into Subkingdom Protozoa (animal-like protists), and even more specifically into Phylum Mastigophora, which use flagellum as a method of locomotion.

    >Characteristics/Life functions

    Euglena is a protist that can both eat food as animals by heterotrophy; and can photosynthesize, like plants, by autotrophy. When acting as a heterotroph, the Euglena surrounds a particle of food and consumes it by phagocytosis. When acting as an autotroph, the Euglena utilizes chloroplasts to produce sugars by photosynthesis.Euglena are able to move through aquatic environments by using a large flagellum for locomotion. To observe its environment, the cell contains an eyespot, a primitive organelle that filters sunlight into the light-detecting, photo-sensitive structures at the base of the flagellum. Euglena also structurally lack cell walls, but have a pellicle instead. (The pellicle is a thin layer supporting the cell membrane in various protozoa, protecting them and allowing them to retain their shape, especially during locomotion.)

    The mobility of Euglena (via flagella) also allows for hunting capability. As a result of an improved ability to hunt for food (while also being able to photosynthesise), many Euglena are considered mixotrophs: autotrophs in sunlight and heterotrophs in the dark.

    Euglenas reproduce asexually, and there has been no evidence of sexual reproduction.

    >Environment

    Euglena can survive in fresh and salt water. In low moisture conditions, a Euglena forms a protective wall around itself and lies dormant as a spore until environmental conditions improve.

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