Which statement is wrong for viruses?
All are parasites
All of them have helical symmetry
They have ability to synthesize nucleic acids and proteins
They have ability to synthesize nucleic acids and proteins
B.
All of them have helical symmetry
The nucleocapsids of viruses are constructed in highly symmetric ways. Two types o symmetry are recognized in viruses, which correspond to the two primary shapes, rod and spherical. Rod-shaped viruses have helical symmetry and spherical viruses have icosahedral symmetry.
How many organisms in the list given below are autotrophs?
Lactobacillus, Nostoc, Chara, Nitrosomonas, Nitrobacter, Streptomyces, Sacharomyces, Trypanosoma, Porphyra, Walfia.
Four
Five
Six
Six
Organisms called Methanogens are most abundant in a
cattle yard
polluted stream
hot spring
hot spring
Which one of the following is common to multicellular fungi, filamentous algae and protonema of mosses?
Diplontic life style
Members of kingdom-Plantae
Mode of nutrition
Mode of nutrition
Continuous addition of sugars in 'fed-batch' fermentation is done to
obtain antibiotics
purify enzymes
degrade sewage
degrade sewage
In eubacteria, a cellular component that resembles eukaryotic cells is
nucleus
ribosomes
cell wall
cell wall
Which one of the following animals is correctly matched with its particular named taxonomic category?
Cuttlefish - Mollusca, a class
Humans - Primata, the family
Housefly - Musca, an order
Housefly - Musca, an order
In the five-kingdom classification, Chlamydomonas and Chlorella have been included in
Protista
Algae
Plantae
Plantae
