CBSE Class 9 Biology Improvement in Food Resources
- what are biotic and abiotic factors in crop production?
- Describe the longevity and composition (i.e., ingredients, vitamins, minerals, etc.) of basic food materials
- differentiate between intercropping and crop rotation
- Differentiate between: River Lift System and River Valley System of Irrigation.
- What precautions should we take while storing the crops?
- how can nutrient of the soil be replenished
- At the time of cultivation when different plants are grown with crops is there any reproduction between them
- What is the meaning of "NAMETODES" ? What is the meaning of "Peigon pea Green gram and lentill.Will they gives us protiens if yes how ??
- Explain any 3 methods of weed control.
- What is the difference between Genetic Manipulation and Hybridisation?