Q. No.Which one of the following is not a fungal disease?
1.
Rust of wheat
2.
Smut of Bajra
3.
Black rot of crucifers
4.
Red rot of sugarcane
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In virus-infected plants, the meristematic tissues in both apical and axillary buds are free of the virus because:
| 1. | the dividing cells are virus resistant. |
| 2. | meristems have anti-viral compounds. |
| 3. | the cell division of meristems is faster than the rate of viral multiplication. |
| 4. | Viruses cannot multiply within meristem cell(s). |
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Fungicides and antibiotics are chemicals that:
| 1. | enhance yield and disease resistance. |
| 2. | kill pathogenic fungi and bacteria, respectively. |
| 3. | kill all pathogenic microbes. |
| 4. | kill pathogenic bacteria and fungi, respectively. |
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Lysine and tryptophan are:
1. proteins
2. non-essential amino acids
3. essential amino acids
4. aromatic amino acids.
To isolate protoplast, one needs:
1. pectinase
2. cellulase
3. both pectinase and cellulase
4. chitinase.
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The sobriquet ‘Father of Green Revolution’ is used for:
| 1. | Norman Borlaug | 2. | M. S. Swaminathan |
| 3. | Gordon Conway | 4. | Elvin Stakman |
Plant tissue culture is based on:
| 1. | cellular totipotency | 2. | indeterminate growth |
| 3. | phenotypic plasticity | 4. | secondary growth |
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Consider the given two statements:
| I: | Somatic hybridization and cybridization have great potential for plant improvement. |
| II: | Somatic hybridization through protoplast fusion provides the ability to combine parent genes in higher plants to overcome sexual incompatibility among plant species or genera. |
1. Both I and II are correct and II explains I
2. Both I and II are correct but II does not explain I
3. I is correct but II is incorrect
4. Both I and II are incorrect
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There are several species of honeybees that can be reared. From the options given below identify the species reared in India:
| 1. | Apisindica | 2. | Apisdorsata |
| 3. | Trigonairidipennis | 4. | Apismellifera |
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Identify the variety of sugarcane from which [with hybrids] about 70% of the sugar produced worldwide comes:
| 1. | Saccharumbarberi | 2. | Saccharumsinense |
| 3. | Saccharumofficinarum | 4. | Saccharumspontaneum |
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