CBSE
Multiple Choice QuestionsVirus was discovered by whom
Stanley
Ivanowski
Herelle
Beijerinck
Chitin is a
polysaccharide
nitrogenous polysaccharide
lipoprotein
protein
Electron microscope is based on the principle of
electromagnetic theory
resolution of glass lenses
magnification of glass lenses
refraction of light
Bacteriophages kill
fungi
parasites
bacteria
viruses
Which one of the following viruses contains is a DNA and RNA?
Cyanophage
Herpes virus
Leuko virus
Polio virus
lsogamous condition with non-flagellated gametes is found in
Chlamydomonas
Spirogyra
Volvox
Fucus
Identify the correct sequence of events in the viral replication process.
I. Eclipse
II. Maturation
III. Adsorption
IV. Assembly
V. Penetration
VI. Lysis
I, II, III, IV, V, VI
II, I, III, IV, V, VI
III, V, I, II, IV, VI
III, V, VI, IV, II, I
Edible part of mushroom is
basidiocarp
primary mycelium
fungal hyphae
basidiospores
Match the items in column I with those in Column II and choose the correct answer.
| Column I | Column II |
| A. Blue- green algae as biofertilizer | 1. Ectomycorrhiza |
| B. Fungi as biofertilizer | 2. Thiobacillus sp. |
| C. Free living nitrogen fixing bacteria | 3. Anabaena sp. |
| D. Phosphate solubilizing bacteria |
4. Clostridium sp. 5. Azospirillium sp. |
A- 3; B- 1; C- 5; D- 2
A- 5; B- 1; C- 2; D- 4
A- 5; B- 4; C- 1; D- 2
A- 4; B- 2; C- 4; D- 2
Lichens are described as indicator of
air pollution
water pollution
soil pollution
agriculture productivity
