Viroid’s have:
1. ssRNA not enclosed protein coat
2. ssDNA not enclosed by protein coat
3. dsDNA enclosed by protein coat
4. dsRNA enclosed by protein coat
Powdery mildew of wheat is caused by a species of:
1. Puccinia
2. Erysphe
3. Ustilago
4. Albugo
Viruses that infect bacterial multiplication and cause their lysis, are called:
1. Lysosomes
2. lipolytic
3. lytic
4. lysogenic
| 1. | A toxic protein that stays inside the bacterial cell |
| 2. | A toxic protein that is excreted into the medium |
| 3. | Lipopolysaccharide located on the surface of the bacteria |
| 4. | None of the above |
1. Bacillarophyceae
2. Xanthophyceae
3. Rhodophyceae
4. Chrysophyceae
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 ascospores endogenously. |
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:
| Options: | (a) | (b) | (c) | (d) |
| 1. | (ii) | (iii) | (iv) | (i) |
| 2. | (i) | (ii) | (iii) | (iv) |
| 3. | (iii) | (ii) | (i) | (iv) |
| 4. | (ii) | (i) | (iii) | (iv) |
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