Home
Class 12
BIOLOGY
The ladybird beetle and dragonflies are ...

The ladybird beetle and dragonflies are useful to get rid of ___ and ____ respectively.

A

Caterpillars and mosquitoes

B

Mosuitoes and fruit borer

C

Mosquitoes and aphids

D

Aphids and mosquitoes

Text Solution

Verified by Experts

The correct Answer is:
4
Promotional Banner

Topper's Solved these Questions

  • MICROBES IN HUMAN WELFARE

    AAKASH INSTITUTE|Exercise Assignment (SECTION - B)|34 Videos
  • MICROBES IN HUMAN WELFARE

    AAKASH INSTITUTE|Exercise Assignment (SECTION - C)|58 Videos
  • MICROBES IN HUMAN WELFARE

    AAKASH INSTITUTE|Exercise EXERCISE|20 Videos
  • LOCOMOTION AND MOVEMENT

    AAKASH INSTITUTE|Exercise ASSIGNMENT SECTION-D|10 Videos
  • MINERAL NUTRITION

    AAKASH INSTITUTE|Exercise ASSIGNMENT (SECTION D)|10 Videos

Similar Questions

Explore conceptually related problems

Dragonflies are used to get rid of

Dragonflies are used to get rid of

Ladybird is useful to get rid of

How do Ladybird beetles and Dragonflies act as biocontrol agents?

Lady Bird Beetle is a useful insect because it feeds on

Ladybird beetle is useful in control of

AAKASH INSTITUTE-MICROBES IN HUMAN WELFARE-Assignment (SECTION - A)
  1. are used in detergent formulations and are helpful in removing oily st...

    Text Solution

    |

  2. Select the microbe which is the source of 'clot buster' enzyme.

    Text Solution

    |

  3. An immunosuppressive agent used in organtransplant patients is

    Text Solution

    |

  4. The product of Monascus purpureus has been commercialised as

    Text Solution

    |

  5. are produced by yeast and act by competitively inhibiting the enzyme r...

    Text Solution

    |

  6. Treatment of waste-water is done by the

    Text Solution

    |

  7. In a sewage treatment plant, primary treatment is

    Text Solution

    |

  8. During primary treatment, all solids that settle forms A and the super...

    Text Solution

    |

  9. What are 'flocs', formed during secondary treatment of sewage?

    Text Solution

    |

  10. Identify the stage of sewage treatment shown below.

    Text Solution

    |

  11. What happens to activated sludge?

    Text Solution

    |

  12. What is the composition of the biogas?

    Text Solution

    |

  13. Identify the parts labelled A, B & C w.r.t., biogas plant

    Text Solution

    |

  14. The bacterium responsible for biogas production are collectively calle...

    Text Solution

    |

  15. The technology of biogas production was developed in india mainly use ...

    Text Solution

    |

  16. The ladybird beetle and dragonflies are useful to get rid of and res...

    Text Solution

    |

  17. The effective biocontrol agents of serveral plant pathogens are specie...

    Text Solution

    |

  18. Biofertilisers

    Text Solution

    |

  19. The main sources of biofertilisers are (a) Bacteria (b) Cyanobact...

    Text Solution

    |

  20. In paddy fields, serves as an important biofertiliser.

    Text Solution

    |