Virus was discovered by whom

• Stanley

• Ivanowski

• Herelle

• Beijerinck

122.

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

Chitin is a

• polysaccharide

• nitrogenous polysaccharide

• lipoprotein

• protein

Lichens are described as indicator of

• air pollution

• water pollution

• soil pollution

• agriculture productivity

Which one of the following viruses contains is a DNA and RNA?

• Cyanophage

• Herpes virus

• Leuko virus

• Polio virus

Edible part of mushroom is

• basidiocarp

• primary mycelium

• fungal hyphae

• basidiospores

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

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

lsogamous condition with non-flagellated gametes is found in

• Chlamydomonas

• Spirogyra

• Volvox

• Fucus