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प्रश्न
While studying the history of the domestication of various cultivated plants _______ were recognized earlier.
पर्याय
Centres of origin
Centres of domestication
Centres of hybrid
Centres of variation
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उत्तर
While studying the history of the domestication of various cultivated plants Centres of origin were recognized earlier.
संबंधित प्रश्न
In an agricultural field there is a prevalence of the following organisms and crop diseases which are affecting the crop yield badly:
- White rust
- Leaf and stripe rust
- Black rot
- Jussids
Recommend the varieties of crops the farmers should grow to get rid of the existing problem and thus improve the crop yield.
Describe the mass flow hypothesis for translocation of organic solutes (food) in plants.
Give a reason for the following:
Bagging is essential in artificial hybridisation.
Breeding of crops with high levels of minerals:
Sugarcane which grow in North India, and which do not grow in north India.
Match the columns-
| Column A | Column B | ||
| A. | Kalyan Sona | 1. | Rice |
| B. | Pusa sawani | 2. | Wheat |
| C. | IR - 8 | 3. | Okra |
Use of certain chemicals and radiation to change the base sequences of genes of crop plants is termed ______.
Discuss the two main limitations of plant hybridization programme.
Discuss natural selection and artificial selection. What are the implications of the latter on the process of evolution?
Name two better yielding varieties of rice developed in India.
