Home
Class 9
BIOLOGY
Why should preventive measures and biolo...

Why should preventive measures and biological control methods be preferred for protecting crops?

Text Solution

Verified by Experts

The correct Answer is:
N/a
Preventive measures (such as use of resistant varieties of crops) and biological control methods should be preferred for protection of crops because they are ecologically safe, target specific and harmless to other life forms.
Promotional Banner

Topper's Solved these Questions

  • IMPROVEMENTS IN FOOD RESOURCES

    LAKHMIR SINGH & MANJIT KAUR|Exercise FORMATIVE ASSESSMENT|1 Videos

  • IMPROVEMENTS IN FOOD RESOURCES

    LAKHMIR SINGH & MANJIT KAUR|Exercise FILL IN THE BLANKS|3 Videos

  • DIVERSITY IN LIVING ORGANISMS

    LAKHMIR SINGH & MANJIT KAUR|Exercise Value Based|5 Videos

  • MODEL TEST PAPER 1

    LAKHMIR SINGH & MANJIT KAUR|Exercise SECTION B|1 Videos

Similar Questions

Explore conceptually related problems

Why should biological control of pests and pathogens be preferred to the conventional use of chemical pesticides?

Why should organic foods be preferred over conventional foods ?

What are crop's pests ? Suggest preventive measures to control pests.

Describe the biological method of weed control.

Explain any three preventive measures to control microbial infections.

What are the measures of prevention and control of the drugs ?

Biological control methods adopted in agriculture pest control based on the

LAKHMIR SINGH & MANJIT KAUR-IMPROVEMENTS IN FOOD RESOURCES -VERY SHORT ANSWER QUESTIONS
  1. Why should preventive measures and biological control methods be prefe...

    Text Solution

    |

  2. Mention the crop whose production has increased by blue revolution and...

    Text Solution

    |

  3. What are plant nutrients ?

    Text Solution

    |

  4. Name the three most important mineral elements required for plant grow...

    Text Solution

    |

  5. What are the micronutrients required by the plants ?

    Text Solution

    |

  6. Name any two macronutrients required by plants.

    Text Solution

    |

  7. Which one is nutrient specific-fertilizer or manure ?

    Text Solution

    |

  8. Which is the oldest method of crop improvement ?

    Text Solution

    |

  9. Name one common disease of paddy.

    Text Solution

    |

  10. Give an example of biological weed control.

    Text Solution

    |

  11. Give one example of natural insecticide.

    Text Solution

    |

  12. What are weeds ?

    Text Solution

    |

  13. Write down two harmful effects of biotic factors on food grains.

    Text Solution

    |

  14. What percent of moisture should be present in the food grains at the t...

    Text Solution

    |

  15. Give one example of solid and one of liquid fumigant.

    Text Solution

    |

  16. Which method is most effective for destroying insects in stored grains...

    Text Solution

    |

  17. How the food grains should be dried on commerical basis ?

    Text Solution

    |

  18. What is feed ?

    Text Solution

    |

  19. Name one (a) Leguminous green fodder, (b) Non-green dry fodder.

    Text Solution

    |

  20. Name one high yielding breed of cow and one of buffalo respectively.

    Text Solution

    |

  21. What are fat content in milk of: (a) Murrah, (b) Surti ?

    Text Solution

    |