Cellulose is the major component of cell walls of

(1) Pythium

(2) Xanthomonas

(3) Pseudomonas

(4) Saccharomyces

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The imperfect fungi which are decomposers of litter and help in mineral cycling belong to

(1) Deuteromycetes

(2) Basidiomycetes

(3) Phycomycetes

(4) Ascomycetes

Concept Questions :-

Kingdom Fungi: Deuteromycetes
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Select wrong statement.

(1) The viroids were discovered by D.J. lvanowski.

(2) W.M. Stanley showed that viruses could be crystallized.

(3) The term 'contagium vivum fluidum' was coined by M.W. Beijerinek.

(4) Mosaic disease in tobacco and AIDS in human being are caused by viruses.

Concept Questions :-

Virus & Viroids
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Choose the wrong statement.

1. Penicillium is multicellular and produces antibiotics.

2. Neurospora is used in the study of biochemical genetics.

3. Morels and truffles are poisonous mushrooms.

4. Yeast is unicellular and useful in fermentation.

Concept Questions :-

Kingdom Fungi: Ascomycetes
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The structures that help some bacteria to attach to rocks and/or host tissues are

1. rhizoids

2. fimbriae

3. mesosomes

4. holdfast

Concept Questions :-

Kingdom Monera: Surface Appendages
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In which group of organisms the cell walls form two thin overlapping shells which fit

together?

1. Chrysophytes

2. Euglenoids

3. Dinoflagellates

4. Slime moulds

Concept Questions :-

Kingdom protista: Chrysophytes
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Pick up the wrong statement.

1. Cell wall is absent in Animalia.

2. Protista have photosynthetic and heterotrophic modes of nutrition.

3. Some fungi are edible.

4. Nuclear membrane is present in Monera.

Concept Questions :-

Kingdom Monera: Introduction
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Which of the following are likely to be present in deep sea water ?

(1) Archaebacteria

(2) Eubacteria

(3) Blue-green algae

(4) Saprophytic fungi

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The rod shaped cells of Bacillus megatarium are converted to spherical units called protoplasts on treatment with the enzyme

(1) lysozyme

(2) cellulase

(3) cellulase and hemicellulase

(4) cellulase, hemicellulase and pectinase

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The organelle common among prokaryotic and eukaryotic cell is

(1) centrosome

(2) ribosome

(3) peroxisome

(4) glyoxysome

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