Advertisements
Advertisements
प्रश्न
What is emasculation?
उत्तर १
Emasculation is removal of anthers from young bisexual flower before it releases pollen grains.
उत्तर २
Removal of anthers of a flower in order to prevent self pollination is called emasculation
APPEARS IN
संबंधित प्रश्न
How has the mutation breeding helped in improving crop varieties? Give one example where this technique has helped.
How has the breeding programme helped in improving the public nutritional health? State two examples in support of your answer.
Identify 'A', 'B', 'C' and 'D' in the given table.
Crop | Variety | Resistance to disease |
A | Himgiri | Leaf rust |
Cauliflower | Pusa Shubhra | B |
Brassica | Pusa Swarnim | C |
Cowpea | D | Bacterial blight |
Name the scientists who Coined the term Diffusion Pressure Deficit
What are analogous organs? Describe with one example from the plant kingdom.
What is Biofortification? Explain selective breeding with suitable example.
Wheat -Atlas 66 has high contents of ______.
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 |
The science of changing and improving the heredity of plants is called ______
Which method of plant breeding has been used to develop a powdery mildew-resistant variety of moong beans?
The thalamus contributes to the fruit formation in ______
Mechanism of fast Speciation in crop plants is ______.
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 ______.
Lysine and tryptophan are ______.
The agriculture sector of India employs about ______.
What is meant by ‘hidden hunger’?
Discuss briefly the technology that made us self-sufficient in food production.
How the resistance in crops can be developed?
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 |