Match the names of the scientists with contribution and choose your answer from the codes given below:

 

Scientists

 

Contribution

I.

Beijerinek

1.

Gave the name ‘virus’

II.

Luc Montagnier  

2.  

Gave the term ‘conragium vivum fluidum’

III.  

Pasteur

3.

Discovered bacteriophages

IV.

Twort

4.

Crystallized TMV

V.

Stanley

5.

Isolated HIV

Codes:

 

I  

II

III

IV

V

(1)

2     

5      

1      

3      

4

(2)

2

3

1

5

4

(3)

4

5

1

3

2

(4)  

4

3

1

5

2

Subtopic:  Virus, Viroids & Prions |
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Identify the incorrect statement:

1. Virus has a protein coat called capsid made of small subunits called capsomeres.

2. The core has the genetic material - either RNA or DNA or both.

3. The capsomeres are arranged in helical or icosahederal forms.

4. Virus can infect any type of organisms.

Subtopic:  Virus, Viroids & Prions |
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Saprophytic protists are:

1. Slime moulds

2. Dinoflagellates

3. Chrysophytes

4. Protozoans

Subtopic:  Kingdom Protista: Slime Moulds |
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Which of the following statements regarding Euglenoids is not true?

(1) Instead of a cell wall, they have a lipid rich pellicle

(2) They have two flagella, a short and a long one

(3) They are photosynthetic in the presence of sunlight but behave like a heterotroph when deprived of sunlight

(4) Pigments of Euglenoids are identical to those present in higher plants

Subtopic:  Kingdom Protista: Euglenoids |
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Identify the incorrectly matched pair:

1. Diatoms: Chief producers in oceans

2. Dinoflagellates: Red tides

3. Slime moulds: Spores dispersed by water

4. Euglenoids: Protein rich pellicle

Subtopic:  Kingdom Protista: Slime Moulds |
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The domain Archaea is not characterized by:

(1) Pseudopeptidoglycan in cell wall

(2) Linear chromosomes

(3) Introns present is some genes

(4) Methanogeneisis as unique metabolism

Subtopic:  Kingdom Monera: Introduction |
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Members of Kingdom Protista:

1. are primarily aquatic 

2. do not have membrane bound organelles

3. are all ciliated or flagellated

4. reproduce exclusively by asexual means

Subtopic:  Kingdom Protista: Chrysophytes |
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Match each item in Column I with one in Column II and select your answer from the codes given below:

 

Column I

 

Column II

A.

Diatoms

a.

Protein rich layer pellicle

B.

Dinoflagellates  

b.

Cell wall embedded with silica

C. 

Euglenoids

c.

Spores with true walls

D.

Slime moulds  

d. 

Cellulose plates in cell wall

Codes:

 

A    

B     

C     

D

1.

b

a

c

d

2.

b

d

a

C

3.

b

c

a

d

4.  

b

a

d

c

Subtopic:  Kingdom Protista: Dinoflagellates | Kingdom Protista: Euglenoids | Kingdom Protista: Slime Moulds |
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All the following statements regarding Basidiomycetes are correct except:

1. The mycelium is branched and septate

2. Asexual spores and vegetative reproduction generally not found

3. Sex organs are absent

4. Basidiospores are exogenously produced on the basidium

Subtopic:  Kingdom Fungi: Basidomycetes |
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Match the Scientists in Column I with their contribution in the field of virology given in Column II and select your answer from the codes given below:

 

Column I

 

Column II

A.

Pasteur

a.

Gave the name ‘virus’

B.

Ivanowsky  

b.

Recognized tobacco mosaic is caused by microbes smaller than bacteria

C. 

Beijerinck

c.

Demonstrated extract of infected tobacco plants could cause infection in healthy plants

D.

Stanley

d. 

Showed that viruses could be crystallized

Codes:

 

A    

B     

C     

D

1.

a

b

c

d

2.

a

c

b

d

3.

b

a

c

d

4.  

b

a

d

c

Subtopic:  Virus, Viroids & Prions |
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