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Biological Classification
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Chrysophytes, euglenoids, dinoflagellates and slime moulds are included in the kingdom
All these groups are unicellular eukaryotic protists.
Protists are single-celled eukaryotes. Chrysophytes, dinoflagellates, euglenoids, protozoans and slime moulds are included in kingdom Protista. -
The primitive prokaryotes responsible for the production of biogas from the dung of ruminant animals, include the
Methanogens in ruminant guts produce methane.
Archaebacteria live in extreme conditions like salty areas, hot springs and marshy areas; they have a distinctive cell wall structure.
Methanogens are archaebacteria that live in the gut of ruminants like cows and buffaloes and produce methane gas during fermentation. -
Which one of the following statements is wrong?
Eubacteria are true bacteria.
Eubacteria are the 'true bacteria'. They have a rigid cell wall and flagellum and are motile. Cyanobacteria, photosynthetic and chemosynthetic autotrophs belong to eubacteria.
So calling eubacteria 'false bacteria' is wrong. -
One of the major components of cell wall of most fungi is
Fungal walls contain chitin.
Chitin is a polysaccharide made up of N-acetyl glucosamine. It is found mainly in the cell wall of fungi and the exoskeleton of arthropods. -
Which of the following statements is wrong for viroids?
Viroid RNA is of low molecular weight.
Viroids are virus-like agents smaller than viruses, composed of naked strands of RNA without a capsid. Their RNA has low molecular weight.