EXERCISE # 1 Q.11 Lichens are composite organs, consisting of algae and (A) Mosses (B) Protozoans (C) Bacteria (D) Fungi Q.12 Mushroom is (A) A plant consisting of fine green threads (B) An edible fungs (C) A bryophyte devoid of roots, stem and leaves (D) A flowering plant Q.13 Which of the following disease is caused by a fungs (A) Small pox (B) Tuberculosis (C) Cancer (D) Aspergillosis Yeast is (A) Alga (C) Bacterium A.Single Choice Type Questions Q.1 The Method of preserving food by adding salt is called (A) Salting (B) Dehydration (C) Canning (D) Freezing Q.2 The microorganism which has the ability to fix nitrogen is (A) Virus (B) Euglena (C) Rhizobium (D) Amoeba Q.3 The protozoa which can perform photosynthesis (A) Amoeba (B) Paramoecium (C) Euglena (D) Giardia Q.4 Formation of curd by milk is done by (A) Lactobacillus (B) Moulds (C) Yeasts (D) algae Q.14 Yeast is used in the production of (A) Sugar (B) Alcohol (C) Oxygen (D) None Q.15 We get CO2 from sugar by the action of (A) Bacterial (B) Algae (C) Fungi (D) Virus Fermentation of sugar occurs by (A) Saccharomyces (B) Mucor (C) Aspergillus (D) Penicillium Q.16 The biological process carried on by the Rhizobium is called (A) Nitrification (B) Ammonification (C) Nitrogen fixation (D) Fermentation Q.17 The smallest organisms which cause disease among plants are (A) Viruses (B) fungi (C) Bacteria (D) Mycoplasma Q.18 Nif genes occur in (A) Penicillium (C) Rhizobium Q.5 Q.6 Q.7 A bacteria helpful in digestion of food is (A) Escherichia coli (B) Clostridium (C) Botulinum (D) None of these Q.8 A disease caused by viruses in animal is (A) Anthrax (B) Aspergillosis (C) Foot and mouth (D) None Q.9 Amoeba, Euglena, Giradia all are examples of (A) Protozoa (B) Viruses (C) Algae (D) Fungi Q.10 Milk is converted into milk powder by (A) Vacuum drying (B) Bottling (C) Canning (D) Dehydration Q.19 (B) Fungus (D) Liverwort (B) Aspergillus (D) Streptococcus Black rust of wheat is caused by (A) Rhizopus (B) Ustilago (C) Penicillium (D) Puccinia Q.20 Lichen represents (A) Symbiotic association of an alga and a fungus (B) Parasitic association of an alga and a fungus (C) Mycorhizial association (D) Commensalism Q.21 Small pox is caused by (A) Virus (B) Bacteria (C) Housefly (D) Mosquito

Microorganisms Exercise # 1

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