Question

which of these are protozoans a euglena be spirogyra Si Paramecium d a & c both​

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.[1][2] 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).[3]

Euglena

Euglena - 400x (8999902391).jpg

Euglena sp.

Scientific classificatione

Phylum:

Euglenozoa

Class:

Euglenoidea

Order:

Euglenida

Family:

Euglenaceae

Genus:

Euglena

Ehrenberg, 1830

The species Euglena gracilis has been used extensively in the laboratory as a model organism.[4]

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 two-kingdom system of biological classification, found them difficult to classify.[5][6] 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.[7]

Answer 2

Question:-

which of these are protozoans a euglena be spirogyra Si Paramecium d a & c both

Answer:-

Euglena is a genus of single-cell flagellate eukaryotic protozoan. It shows mixotrophic nutrition. it shows both autotrophic and heterotrophic nutrition.

Though euglena is photosynthetic in the presence of sunlight, when deprived of sunlight they behave like heterotrophs by predating on other smaller organisms.

Hence the photosynthetic protozoa are Euglena.

So, the correct answer is 'Euglena'.