Mad cow disease in cattle is caused by an organism which has :

1. Inert crystalline

2. Abnormally folded protein

3. Free RNA without protein coat

4. Free DNA without protein coat

Subtopic:  Virus, Viroids & Prions |
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Which of the following statements is correct?

1. Lichens do not grow in polluted areas.

2. Algal component of lichens is called mycobiont

3. Fungal component of lichens is called phycobiont

4. Lichens are not good pollution indicators.

Subtopic:  Virus, Viroids & Prions |
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Match the organisms in column I with habitats in column II.

      Column I                              Column II

(a) Halophiles                        (i) Hot springs

(b) Thermoacidophiles            (ii) Aquatic environment

(c) Methanogens                    (iii) Guts of ruminants

(d) Cyanobacteria                  (iv) Salty areas

Select the correct answer from the options given below:

1. (a)-(iv), (b)-(i), (c)-(iii), (d)-(ii)

2. (a)-(i), (b)-(ii), (c)-(iii), (d)-(iv)

3. (a)-(iii), (b)-(iv), (c)-(i), (d)-(i)

4. (a)-(ii). (b)-(iv), (c)-(iii), (d)-(i)

Subtopic:  Kingdom Monera: Bacterial Classification |
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Which of the following statements is incorrect?

1. Prions consist of abnormally folded proteins

2. Viroids lack a protein cost

3. Viruses are obligate parasites

4. Infective consituent in viruses is the protein coat

Subtopic:  Virus, Viroids & Prions |
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Match the Column-I with Column-II

 

Column-I

 

Column-II

(a)

Saprophyte

(i)

Symbiotic association of fungi with plant roots

(b)

Parasite

(ii)

Decomposition of dead organic materials

(c)

Lichens

(iii)

Living on living plants or animals

(d)

Mycorrhiza

(iv)

Symbiotic association algae and fungi

Choose the correct answer from the options given below:

     (a)   (b)   (c)   (d)

1.   (ii)  (iii)   (iv)   (i)

2.   (i)    (ii)   (iii)   (iv)

3.   (iii)   (ii)   (i)   (iv)

4.   (ii)    (i)   (iii)   (iv)    

Subtopic:  Kingdom Fungi: Introduction |
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Which of the following statements is incorrect?

1. Yeasts have filamentous bodies with long thread-like hyphae

2. Morels and truffles are edible delicacies

3. Claviceps is a source of many alkaloids and LSD

4. Conidia are produced exogenously and ascopores endogenously

Subtopic:  Kingdom Fungi: Introduction |
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The causative agent of mad-cow disease is a:

1. bacterium

2. prion

3. worm

4. virus

Subtopic:  Virus, Viroids & Prions |
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Evolutionary history of an organism is known as:

1. Phylogeny

2. Ancestry

3. Palaeontology

4. Ontogeny

Subtopic:  Different Classification Systems |
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What is common about Trypanosoma, Noctiluca, Monocystis and Giardia?
1. These are all unicellular protists
2. They have flagella
3. They produce spores
4. These are all parasites

Subtopic:  Protozoa |
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The thalloid body of a slime mould (Myxomycetes) is known as :
1. protonema
2. Plasmodium
3. fruiting body
4. mycelium

Subtopic:  Kingdom Protista: Slime Moulds |
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