Q. No.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 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) |
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
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