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प्रश्न
Several South Indian states raise 2-3 crops of rice annually. The agronomic feature that makes this possible is because of ______.
पर्याय
shorter rice plant
better irrigation facilities
early yielding rice variety
disease resistant rice variety
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उत्तर
Several South Indian states raise 2-3 crops of rice annually. The agronomic feature that makes this possible is because of early yielding rice variety.
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संबंधित प्रश्न
What is plant breeding?
Vijaya, Padma, Kanti and Jayanti are high-yielding varieties of ______.
Give the names of ‘two’ insect-resistant crop varieties.
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.
What are components of water potential? Explain
What is Biofortification? Explain selective breeding with suitable example.
Give the scientific term used for the preservation of germplasm at a very low temperature.
Plants having similar genotypes produced by plant breeding are called
Which one of the following crop varieties correct matches with its resistance to disease?
| Variety | Resistance to disease |
| a) Pusa Komal | Bacterial blight |
| b) Pusa Sadabahar | White rust |
| c) Pusa Shubhra | Chilli mosaic virus |
| d) Brassica | Pusa swarnim |
Polyploidy leads to the rapid formation of new species because:
Which one of the following is not a fungal disease?
Which one of the following combination would a sugarcane farmer look for in the sugarcane crop?
33 percent of India’s Gross Domestic Product comes from ______.
In the area of plant breeding, it is important not only to preserve the seeds of the variety being cultivated, but also to preserve all its wild relatives. Explain with a suitable example.
Discuss the two main limitations of plant hybridization programme.
Life style diseases are increasing alarmingly in India. We are also dealing with large scale malnutrition in the population. Is there any method by which we can address both of these problems together?
Mutations are beneficial for plant breeding. Taking an example, justify the statement.
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 |
Give a reason for the following:
The continuous inbreeding of crops may lead to reduced fertility and productivity. However, the self-pollinated crops do not show the ill-effects of inbreeding.
