Single-celled eukaryotes are included in
1. | Protista | 2. | Fungi |
3. | Archaea | 4. | Monera |
Membrane-bound organelles are absent in
(1) Saccharomyces
(2) Streptococcus
(3) Chlamydomonas
(4) Plasmodium
Virus envelope is known as
(1) capsid
(2) virion
(3) nucleoprotein
(4) core
Some hyperthermophilic organisms that grow in highly acidic (pH2) habitats belong to the two groups called
(1) eubacteria and archaea
(2) cyanobacteria and diatoms
(3) protists and mosses
(4) liverworts and yeasts
Infectious proteins are present in
(1) gemini viruses
(2) prions
(3) viroids
(4) satellite viruses
Oxygenic photosynthesis occurs in
(1) Chromatium
(2) Oscillatoria
(3) Rhodospirillum
(4) Chlorobium
Which one is the wrong pairing for the disease and its causal organism?
(1) late blight of potato-Alternaria solani
(2) Black rust of wheat-Puccinia graminis
(3) Loose smut of wheat-Ustilago nuda
(4) Root-knot of vegetables-Meloidogyne sp.
T. O. Diener discovered a
(1) free infectious RNA
(2) free infectious DNA
(3) infectious protein
(4) bacteriophage
Modern detergents contain enzyme preparations of
(1) acidophiles
(2) alkaliphiles
(3) thermoacidophiles
(4) thermophiles
Bacterial leaf blight of rice is caused by a species of
(1) Xanthomonas
(2) Pseudomonas
(3) Alternaria
(4) Erwinia