Home
Class 9
BIOLOGY
Write the modes by which insects affect ...

Write the modes by which insects affect the crop yield.

Text Solution

Verified by Experts

The correct Answer is:
N/a
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

Weeds affect the crop plants by

In an agricultural field there is a prevalance of the following organisms and crop diseases which are affecting the crop yield badly: a) White rust b) Leaf and strips rust dc) Black rot d) Jassids Recommend the varieties of crops the farmers should grow to get rid of te existing problem and thus improve the crop yeild

Give the names of two insect resistant crop varieties.

Name the crop plant which is affected by red rot.

Mention three different ways in which insect pests can attack the crop plant.

Excessive use of fertilizers, pesticides and insecticides to increase crop yield leads to

LAKHMIR SINGH & MANJIT KAUR-IMPROVEMENTS IN FOOD RESOURCES -VERY SHORT ANSWER QUESTIONS
  1. Write the modes by which insects affect the crop yield.

    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

    |