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प्रश्न
Give any four advantages of mutation breeding.
उत्तर
Four advantages of mutation breeding are as follows:
- Mutation breeding can effective to disseminate an undesirable character from a crop variety.
- It improves the morphological and psychological characteristics of cultivated crops.
- Mutation breeding can improve the disease resistance of crop plants.
- Mutation breeding can be used to improve the specific characters of a well-adapted high yielding variety.
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संबंधित प्रश्न
(a) Name the tropical sugar cane variety grown in South India. How has it helped in improving the sugar cane quality grown in North India?
(b) Identify 'a', 'b' and 'c' in the following table:
| No. | Crop | Variety | Insect Pests |
| 1. | Brassica | Pusa Gaurav | (a) |
| 2. | Flat bean | Pusa Sem 2 Pusa sem 3 |
(b) |
| 3. | (c) | Pusa Sawani Pusa A-4 |
Shoot and fruit borer |
Name the following: The semi-dwarf variety of wheat is high-yielding and disease-resistant.
Plant breeding technique has helped sugar industry in North India. Explain how.
Define Osmotic pressure
What are components of water potential? Explain
Answer the following question.
How did plant breeding techniques help north Indian farmers to develop cane with desired characters?
Describe briefly various steps of plant breeding methods.
Animal husbandry and plant breeding programmes are the examples of:
Match the columns-
| Column A | Column B | ||
| A. | Kalyan Sona | 1. | Rice |
| B. | Pusa sawani | 2. | Wheat |
| C. | IR - 8 | 3. | Okra |
Match the following:
| Sr. No. | Column I | Column II | |
| (i) | Eutrophication | (a) | A soil erosion |
| (ii) | Biomagnification | (b) | carbon monoxide, methane |
| (iii) | Particulate pollutant | (c) | Prevention of extinction |
| (iv) | Conservation | (d) | Dust, smog |
| (v) | Gaseous pollutants | (e) | Accumulation of nonbiodegradable substances |
| (vi) | Deforestation | (f) | Death of aquatic ecosystem |
