Classification of Animals MCQs Part 15

1) The main difference in Gram (+)ve and Gram (-)ve bacteria resides in their
a) Cell wall
b) Cell Membrane
c) Cytoplasm
d) Flagella

2) Fertility of paddy fields is improved by the addition of
a) Rhizobia
b) Gypsum
c) Sodium sulphate
d) Blue-Green Algae

3) The largest population of organisms of any type on earth is of
a) Insects
b) Algae
c) Bacteria
d) Fungi

4) The ground becomes slippery during the rains due to the growth of
a) Moss
b) Brown Algae
c) Green Algae
d) Blue-Green Algae

5) Peptidoglycan is a characteristic constituent of cell wall in
a) Archaebacteria and Eucaryotes
b) Eubacteria and unicellular Eucaryotes
c) Bacteria and Cyanobacteria
d) Monera and Protista

6) In Nostoc, nitrogen fixation takes place in the
a) Heterocysts
b) Akinetes
c) Hormogones
d) Vegetative cells

7) Against which type of bacteria is Streptomycin effective?
a) Gram (+)
b) Gram (-)
c) Gram neutral
d) Both Gram (+) and Gram (-)

8) Murein of bacterial cell wall is a derivative of
a) Protein
b) Fat
c) Organic acid
d) Sugar

9) Iron bacterium is
a) Beggiotoa
b) Geobacillus
c) Thiobacillus
d) None of the above

10) Bacteria obtaining energy by oxidation of inorganic substances are
a) Chemolithotrophs
b) Chemo-organotrops
c) Photolithotrophs
d) Photo-organotrophs

11) Bacterial photosynthesis differs from photosynthesis of others in
a) First product
b) Number of phases
c) Type of reductant
d) All the above

12) Beggiatoa
a) Is photoautotrophic
b) Oxidises H2S to obtain energy
c) Oxidises sulphur to obtain energy
d) Reduces sulphur to H2S in order to obtain energy

13) The inner wall of Gram (-) bacteria is formed of
a) Lipoprotein
b) Mucopeptide
c) Chromoprotein
d) Glycoprotein

14) A prokaryotic genetic system containsc
a) DNA and histone
b) DNA but no histone
c) Histone but no DNA
d) Neither DNR nor histones

15) PPLO is
a) Virus
b) Viroid
c) Mycoplasma
d) Bacteria

16) Heat killed S-cells along with live R-cells of diplococcus pneumoniae were injected in mice
a) Mice survived and had live S-cells
b) Mice survived and had dead R-cells
c) Mice died and showed live S-cells
d) Mice died and showed live R-cells

17) Gram negative bacteria detect and respond to chemicals by
a) Muramic acid
b) Lipopolysaccharide
c) Porins
d) Volutin granules

18) Nif genes occur in
a) Penicillium
b) Rhizobium
c) Aspergillus
d) Streptococcus

19) The contracile vacuoles of Paramecium are analogous to the
a) Sweat glands of mammals
b) Uriniferous tubules
c) Gastrovascular cavity of Hydra
d) Typhlosole of Earthworm

20) If a pond dries up, Amoeba
a) Reproduces
b) Encysts
c) Degenerates
d) Behaviour is uncertain

21) Two species of Amoeba X and Y were kept in fresh water and got adapted. Species X developed contractile vacuole. When both were transferred to sea water and got adapted, both X and Y lost their contractile vacuole. From these observations we conclude that
a) Both X and Y are marine species
b) Species Y is marine and X is fresh water
c) Species X is marine and Y is fresh water
d) Both X and Y are fresh water

22) In a patient suffering from malaria, the cells having Schuffner’s granules are
a) Gametocytes
b) Signet ring trophozoites
c) Infected erythrocytes
d) Infected liver cells

23) A bite of the tse-tse fly may pass on to humans
a) Leishmania donovani
b) Trypanosoma gambiense
c) Entamoeba histolytica
d) Plasmodium vivax

24) Quartan malaria is due to
a) Plasmodium falciparum
b) P.vivax
c) P. ovale
d) P. malariae

25) Which one is a filter feeder?
a) Spider
b) Leech
c) Paramoecium
d) Amoeba

26) The carnivorous fish Gambusia introduced in water bodies for controlling a deadly disease feeds on larvae of
a) Dragonfly
b) Anopheles
c) Nephantis
d) All the above

27) Red tide is caused by
a) Gonyaulax
b) Nactiluca
c) Ceratium
d) None of the above

28) Medically the secondary host for Plasmodium vivax is
a) Anopheles female
b) Anopheles male
c) Culex male
d) Culex female

29) Marine protozoans lack contractile vacuole because
a) Their body cannot accommodate it
b) They are hypoosmotic to their environment
c) they are isotonic with their environment
d) Osmoregulation is done by cell membrane

30) All stages of Plasmodium are digested in stomach of female Anopheles except
a) Sporozoites
b) Gametocytes
c) Erythrocytes
d) Merozoites

31) The maximum mass of living diatoms occurs in
a) Salt lakes
b) Marine pelagic habitat
c) Moist soil and swamps
d) deep coal mines

32) Where did Ronald Ross do his research related to the malarial parasite?
a) London
b) Hyderabad
c) Lucknow
d) Chennai

33) The fungus that may cause disease in human beings is
a) Puccinia
b) Aspergillus
c) Cystopus
d) Rhizopus

34) A puffball is a/an
a) Alga
b) Fungus
c) Slime Mould
d) Composite organism

35) Storage grains are contaminated with aflatoxin due to growth of
a) Virus
b) Yeast
c) Bacterium
d) Aspergillus flavus

36) The Indian mycologist famous for his work on wheat rust was
a) V/ Puri
b) K.C. Mehta
c) P. Maheswari
d) B.B. Sahni

37) Which one secretes pheromones for the function?
a) Rhizopus for formation of zygospore
b) All fungi for sexual reproduction
c) Yeast for mating
d) Plants for growth and development

38) Plant diseases caused by Ustilago are called smuts because
a) They parasitise cereals
b) Mycelium in black
c) They develop sooty masses of spores
d) Affected parts become completely black

39) Citric acid is obtained from
a) Aspergillus nigher
b) Polyporus species
c) Penicillium notatum
d) Saccharomyces cerevisiae

40) A coprophilous fungus is
a) Trichoderma
b) Pilobolus
c) Fusarium
d) Humicola

41) VAM contains
a) Symbiotic bacteria
b) Saprophytic bacteria
c) Symbiotic fungi
d) saprophytic fungi

42) Antihaemorrhagic ergot alkaloids are extracted from
a) Cinchona
b) Alga
c) Bryophyte
d) Fungus

43) The fruiting body formed from a filamentous, heterotrophic organism which is know for its nutritive value for humans is
a) Cremocarp
b) Acervulus
c) Basidiocarp
d) Akinete

44) St. Anthony’s fire is caused by
a) Bacteria
b) Fungus
c) Nematode
d) Polychaete

Answers

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