Identify the option where all columns are correctly matched:
|
Crop |
Variety |
Resistant to |
1. |
Rapeseed mustard |
Pusa Sawani |
Shoot and fruit borer |
2. |
Chilli |
Himgiri |
Chilli mosaic virus |
3. |
Cauliflower |
Pusa Shubhra |
Bacterial blight |
4. |
Flat bean |
Pusa Sem 2 |
Aphids |
A plant disease not caused by a fungal pathogen will be:
1. | Brown rust of wheat | 2. | Black rot of crucifers |
3. | Red rot of sugarcane | 4. | Late blight of potato |
In north India, a sugarcane farmer would be best advised to grow:
1. | Saccharum barberi |
2. | Saccharum officinarum |
3. | A hybrid of Saccharum barberi and Saccharum officinarum |
4. | A hybrid of Saccharum officinarum and a grass Aegilops squarrosa |
Methylophilus methylotrophus is a source of:
1. | Bioinsecticide | 2. | Single cell protein |
3. | Thrombolytic | 4. | Clotting factors |
Identify the incorrectly matched pair:
Column I | Column II | |
1. | Sonalika and Kalyan Sona | Improved varieties of wheat |
2. | Jaya and Ratna | Improved varieties of maize |
3 | Saccharum Barberi | Poor sugar content and yield |
4. | Saccharum officinarum | High sugar content and thick stems |
The most important species of honeybee reared in India is:
1. | Apis indica | 2. | Apis mellifera |
3. | Apis dorsata | 4. | Apis florea |
Practically all hybrids of poultry and swine are produced by:
1. crossing inbred stocks
2. introduction of exotic breeds
3. crossing genetically similar parents
4. mutation breeding
Consider the following statements:
I: | Self-pollination or selfing is the extreme form of inbreeding. |
II: | Loss of vigor associated with inbreeding is inbreeding depression. |
III: | Self-pollinated crops do not usually show the ill effects of inbreeding. |
The correct statements are:
1. Only I and II
2. Only I and III
3. Only II and III
4. I, II and III
In mung bean, resistance to yellow mosaic virus and powdery mildew was introduced by:
1. | Agrobacterium mediation | 2. | Somatic hybridization |
3. | Micropropagation | 4. | Mutation breeding |
Consider the two statements:
I: | Inbreeding is an important strategy in animal breeding experiments. |
II: | It exposes recessive harmful genes that are eliminated by selection. |
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. | Only I is correct. |
4. | Both I and II are incorrect. |