True nucleus is absent in

(1) Anabaena

(2) Mucor

(3) Vaucheria

(4) Volvox

Concept Questions :-

Kingdom Monera: Introduction
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Cell wall is absent in

(1) Aspergillus

(2) Funaria

(3) Mycoplasma

(4) Nostoc

Concept Questions :-

Kingdom Monera:Actinomycetes, Mycoplasma
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Which of the following shows coiled RNA strand and capsomeres?

(1) Polio virus

(2) Tobacco mosaic virus

(3) Measles virus

(4) Retrovirus

Concept Questions :-

Virus, Viroids & Prions
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Viruses have

(1) DNA enclosed in a protein coat

(2) prokaryotic nucleus

(3) single chromosome

(4) Both DNA and RNA

Concept Questions :-

Virus, Viroids & Prions
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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. lvanowsky.

(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 & Prions
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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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