Q. No.Math Column I with Column II and choose your answer from the codes given:
Column I (Bacterium)
Column II (shape)
I.
Escherechia coli
1.
Spherical
II.
Streptococcus pyogenes
2.
Helically coiled
III.
Treponema pallidum
3.
Rod shaped
I
II
III
(1)
1
2
3
(2)
3
1
2
(3)
3
2
1
(4)
1
3
2
Column I (Bacterium)
Column II (shape)
I.
Escherechia coli
1.
Spherical
II.
Streptococcus pyogenes
2.
Helically coiled
III.
Treponema pallidum
3.
Rod shaped
I
II
III
(1)
1
2
3
(2)
3
1
2
(3)
3
2
1
(4)
1
3
2
Identify the incorrect statement regarding bacteria:
| 1. | Bacteria are the most abundant microorganisms. |
| 2. | Bacteria live in extreme habitats where very few other life forms can survive. |
| 3. | Bacteria as a group show the most extensive metabolic diversity. |
| 4. | They are obligate intracellular parasites. |
Identify a character that is not unique to archaebacteria:
(1) Cell wall structure
(2) Cell membrane structure
(3) Flagellin protein structure
(4) Fatty acid synthetase present
Consider the following statements regarding Mycoplasma:
I. They are a genus of bacteria that have a unique cell wall of their own.
II. In their genetic code UGA codes for tryptophan.
III. None of them is pathogenic to humans.
IV. They have a large genome.
V. They can be killed by penicillins.
VI. They can survive without oxygen
The number of correct statements is:
(1) 1
(2) 2
(3) 3
(4) 4
Diatoms have left behind large amounts of cell wall deposits in their habitat because:
1. They are most abundant in that habitat
2. Their life span is long
3. Their wall is indestructible
4. The statement is not true
Dinoflagellates:
I. Are mostly marine and photosynthetic.
II. Have a cell wall that has stiff cellulose plates on the outer surface.
III. Have two flagella
IV. Have chloroplasts bound by three membranes
The correct statements are:
(1) I, II and III
(2) I, III and IV
(3) II, III and IV
(4) I, II III and IV
Consider the following characters:
I. Heterotroph organisms
II. A dikaryon stage
III. Cell wall made of chitin
IV. Undergo nuclear mitosis
Which of the above relate to fungi?
(1) I, II and III
(2) I, III and IV
(3) II, III and IV
(4) I, II, III and IV
How many of the following statements regarding fungi are true?
| I. | Asexual reproduction is common by the formation of spores. |
| II. | Their bodies consist of hyphae that may be interconnected to form mycelium. |
| III. | They secrete digestive enzymes onto organic matter and then absorb the products of the digestion. |
| IV. | Fungi can break down almost any carbon containing product. |
| V. | Fungi do not enter symbiotic relationships. |
1. 2
2. 3
3. 4
4. 5
Which of the following is not an edible mushroom?
(1) Agaricus bispora
(2) Pleurotus ostreatus
(3) Lentinula edodes
(4) Amantia phalloides
Consider the following characters:
I. Nuclear envelope
II. Membranes lacking sterols
III. 80s ribosomes
IV. split genes
The character not shared by fungi with other eukaryotes is/are:
(1) II alone
(2) IV alone
(3) II and IV only
(4) III and IV only
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