Advertisements
Advertisements
प्रश्न
What is heterosis?
उत्तर
Heterosis : Heterosis means hybrid viger or Heterosis or outbreeding enhancement is the improved or increased function of any biological quality in a hybrid offspring.
APPEARS IN
संबंधित प्रश्न
What is ‘biofortification’?
What are transgenic plants? Explain with any two examples
What are analogous organs? Describe with one example from the plant kingdom.
Answer each question in ‘One’ sentence only:
Define stock and scion.
Give any four advantages of mutation breeding.
The biggest constraint of plant breeding is ______.
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.
Give few examples of biofortified crops. What benefits do they offer to the society?
Name two better yielding varieties of rice developed in India.
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 |
