Difficulty Level:
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
Difficulty Level:
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
Difficulty Level:
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
Difficulty Level:
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
Difficulty Level:
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. |
Celulose 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 |
Difficulty Level:
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
Difficulty Level:
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 |
Difficulty Level:
Cells in some filamentous cynobacteria that are speciallized for nitrogen fixation are called:
1. Phycobilisomes
2. Chromatophores
3. Grana
4. Heterocysts
Concept Questions :-
Difficulty Level:
Which of the following are found in extreme saline conditions?
(1) Archaebacteria
(2) Eubacteria
(3) Cyanobacteria
(4) Mycobacteria
Difficulty Level:
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