Question

what is a euglena.(150 words answering).​

Answer 1

Answer:

Euglena is a genus of single cell flagellate eukaryotes. It is the best known and most widely studied member of the class Euglenoidea, a diverse group containing some 54 genera and at least 800 species.[3][4] Species of Euglena are found in freshwater and salt water. They are often abundant in quiet inland waters where they may bloom in numbers sufficient to color the surface of ponds and ditches green (E. viridis) or red (E. sanguinea).[5]

Euglena

Euglena mutabilis.jpg

Euglena mutabilis (image by DJ Patterson)

Scientific classification

Domain:

Eukaryota

(unranked):

Excavata

Division:

Euglenozoa[1][2]

Class:

Euglenoidea

Order:

Euglenales

Family:

Euglenaceae

Genus:

Euglena

Ehrenberg,

The species Euglena gracilis has been used extensively in the laboratory as a model organism.[6]

Most species of Euglena have photosynthesizing chloroplasts within the body of the cell, which enable them to feed by autotrophy, like plants. However, they can also take nourishment heterotrophically, like animals. Since Euglena have features of both animals and plants, early taxonomists, working within the Linnaean three-kingdom system of biological classification, found them difficult to classify.[7][8] It was the question of where to put such "unclassifiable" creatures that prompted Ernst Haeckel to add a third living kingdom (a fourth kingdom in toto) to the Animale, Vegetabile (and Lapideum meaning Mineral) of Linnaeus: the Kingdom Protista.[9]

Answer 2

Euglena is a larger genus of unicellular protist. They have both plant and animal characteristics. All live in water and move by means of flagellum. This is an animal characteristic. Most of have chloroplast which is characteristic of algae and plants.

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