Q. No.Identify the incorrect statement regarding viruses:
1.
A virus is a nucleoprotein and the genetic material is infectious
2.
Retroviruses contain both RNA and DNA
3.
Viruses are obligate cellular endoparasites
4.
Viruses can be crystallized and this was first shown by W. M Stanley
Which disease of man is similar to cattle's, bovine spongiform encephalopathy:
| 1. | Encephalitis | 2. | Jacob-Creutzfeldt disease |
| 3. | Spongiocitis of cerebrum | 4. | Spondylitis |
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In which kingdom would you classify the archaea and nitrogen-fixing organism, if the five-kingdom system of classification is used?
| 1. | Plantae | 2. | Fungi |
| 3. | Protista | 4. | Monera |
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Which of the following statements is correct?
1. Organisms that depend on living plants are called saprophytes.
2. Some of the organisms can fix atmospheric nitrogen in specialized cells called sheath cells.
3. The fusion of two cells is called Karyogamy.
4. Fusion of protoplasms between two motile on non-motile gametes is called plasmogamy.
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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
Which of the following statements is incorrect?
1. Prions consist of abnormally folded proteins
2. Viroids lack a protein coat
3. Viruses are obligate parasites
4. Infective constituent in viruses is the protein coat
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 of 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) |
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:
| (a) | (b) | (c) | (d) | |
| 1. | (iv) | (i) | (iii) | (ii) |
| 2. | (i) | (ii) | (iii) | (iv) |
| 3. | (iii) | (iv) | (i) | (ii) |
| 4. | (ii) | (iv) | (iii) | (i) |
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.
Find the correct match [with respect to Whittaker’s Five Kingdom classification]:
| 1. | Monera | All members have a cell wall |
| 2. | Protista | All members are photosynthetic |
| 3. | Fungi | All members are multi-cellular |
| 4. | Animalia | All members are heterotrophs |
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