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प्रश्न
Importing better varieties and plants from outside and acclimatizing them to the local environment is called
पर्याय
cloning
heterosis
selection
introduction
उत्तर
Introduction
संबंधित प्रश्न
How has the breeding programme helped in improving the public nutritional health? State two examples in support of your answer.
How has mutation breeding helped in improving the production of mung bean crop?
Name any two common Indian millet crops.
What is emasculation?
State one characteristic of millets that has been improved as a result of hybrid breeding so as to produce high yielding millet crops.
Name the scientists who Coined the term Diffusion Pressure Deficit
Describe briefly various steps of plant breeding methods.
While studying the history of the domestication of various cultivated plants _______ were recognized earlier.
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 |
Column - I contains names of host plant while Column - II contains names of viral dieases. Find the correct option.
| Column-I | Column-II | ||
| (I) | Banana | (p) | little leaf |
| (II) | Sugarcane | (q) | bunchy top |
| (III) | Papaya | (r) | leaf roll |
| (IV) | Brinjal | (s) | grassy shoot |
| (t) | leaf curl |
In hybridization experiments 'true breeding' means off-springs show ____________.
Which of the following is not an objective of Biofortification in crops?
The scientific process by which crop plants are enriched with certain desirable nutrients is called ______.
The agriculture sector of India employs about ______.
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.
Name a man-made cereal? Trace how it was developed and where is it used?
Give few examples of biofortified crops. What benefits do they offer to the society?
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 |
