Q. No.In the five-kingdom classification, Chlamydomonas and Chlorella have been included in:
1.
Algae
2.
Plantae
3.
Monera
4.
Protista
Given below is the diagram of a bacteriophage. In which one of the options, all the four parts A, B, C and D are correct?
| A | B | C | D | |
| 1. | Sheath | Collar | Head | Tail fibres |
| 2. | Head | Sheath | Collar | Tail fibres |
| 3. | Collar | Tail fibres | Head | Sheath |
| 4. | Tail fibres | Head | Sheath | Collar |
Black (stem) rust of wheat is caused by:
1. Ustilago nuda
2. Puccinia graminis
3. Xanthomonas oryzae
4. Alternaria solani
Select the correct combination of the statements (a-d) regarding the characteristics of certain organisms:
| (a) | Methanogens are archaebacteria that produce methane in marshy areas |
| (b) | Nostoc is a filamentous blue-green alga that fixes atmospheric nitrogen |
| (c) | Chemosynthetic autotrophic bacteria synthesize cellulose from glucose |
| (d) | Mycoplasma lack a cell wall and can survive without oxygen |
The correct statements are:
| 1. | (a), (b) and (c) | 2. | (b), (c) and (d) |
| 3. | (a), (b) and (d) | 4. | (b) and (c) |
| Items | Category | Exception | |
| 1. | Kangaroo, Koala, wombat |
Australian marsupials | Wombat |
| 2. | Plasmodium, Cuscuta, Trypanosoma |
Protozoan parasites | Cuscuta |
| 3. | Typhoid, Pneumonia, Diphtheria |
Bacterial diseases | Diphtheria |
| 4. | UAA, UAG, UGA | Stop codons | UAG |
There exists a close association between the alga and the fungus within a lichen. The fungus:
| 1. | Provides food for the alga |
| 2. | Provides protection, anchorage and absorption for the alga |
| 3. | Fixes the atmospheric nitrogen for the alga |
| 4. | Releases oxygen for the alga |
According to five kingdom system, blue green algae belongs to:
1. Metaphyta
2. Monera
3. Protista
4. Algae
Which of the following survives a temperature of 104 to ?
1. Marine Archaebacteria
2. Hot water spring thermophiles
3. Seeds of angiosperms
4. Eubacteria
Lichens are a well-known combination of an alga and a fungus where the fungus has:
1. An epiphytic relationship with the alga
2. A parasitic relationship with the alga
3. A symbiotic relationship with the alga
4. A saprophytic relationship with the alga
Lichens can be used as:
1. Bio-indicator for water and air pollution
2. Initial vegetation for waste lands
3. Source of wood
4. To check the air pollution
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