Home
Class 12
BIOLOGY
Consider the following four measures (1-...

Consider the following four measures (1-4) that could be taken to successfully grow chickpea in an area where bacterial blight disease is common:
(i) Spray with Bordeaux mixture
(ii) Control of the insect vector of the disease pathogen
(iii) Use of only disease-free seeds
(iv) Use of varieties resistant to the disease

A

(iii) and (iv)

B

(i) and (iv)

C

(ii) and (iii)

D

(i) and (ii)

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • NEET

    NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)|Exercise QUESTION|187 Videos
  • NEET

    NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)|Exercise MCQ|184 Videos
  • NEET

    NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)|Exercise MCQs|1319 Videos
  • MORPHOLOGY OF FLOWERING PLANTS

    NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)|Exercise Exercise|91 Videos
  • NEET 2018

    NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)|Exercise Exercise|90 Videos

Similar Questions

Explore conceptually related problems

Chick pea is being grown in area where bacterial blight is common. What measurus (a-d) should be taken (a) Spraying Bordeaux mixture (b) Controlling Bordeaux mixture © Controlling insect or vector of pathogen (d) use seeds of disease resistant variety

(i) Name causative agent of malaria. Which insect vector spreads it? (ii) Which step the biologists immediately took to check the disease ? (iii) Name the most common antimalarial drug being used. From where is it extracted?

First read a passage and then answer the questions following that passage. Soil scientists have shown that the soil teems with millions of living things, many of them useful, others harmful. The living things which are useful include earthworms and various kinds of bacteria. Earthworms loosen the soil and so enable air and water to enter it. Bacteria, which are microscopic living things break down dead plants and animals and make humus, or take nitrogen from the air and change it into substances that plants use. The living things that do harm include other bacteria and fungi which cause diseases. Other harmful things are pests such as wire worms which feed on the roots of grass and other plants. While the farmer can usually keep weeds in check by careful cultivation, this alone may not protect his crops from insects, pests and diseases. Nowadays, however, he is much better able to control these enemies. He may plant. specially resistant types of seeds or he may keep the pests and diseases in check with chemicals. With better seeds farmers have been able to increase their crop yield . They can grow crops that ripen more quickly and have a stronger resistance to disease, frost or drought. The farmers today can also select seeds

First read a passage and then answer the questions following that passage. Soil scientists have shown that the soil teems with millions of living things, many of them useful, others harmful. The living things which are useful include earthworms and various kinds of bacteria. Earthworms loosen the soil and so enable air and water to enter it. Bacteria, which are microscopic living things break down dead plants and animals and make humus, or take nitrogen from the air and change it into substances that plants use. The living things that do harm include other bacteria and fungi which cause diseases. Other harmful things are pests such as wire worms which feed on the roots of grass and other plants. While the farmer can usually keep weeds in check by careful cultivation, this alone may not protect his crops from insects, pests and diseases. Nowadays, however, he is much better able to control these enemies. He may plant. specially resistant types of seeds or he may keep the pests and diseases in check with chemicals. With better seeds farmers have been able to increase their crop yield . They can grow crops that ripen more quickly and have a stronger resistance to disease, frost or drought. Scientists who study soil believe that

First read a passage and then answer the questions following that passage. Soil scientists have shown that the soil teems with millions of living things, many of them useful, others harmful. The living things which are useful include earthworms and various kinds of bacteria. Earthworms loosen the soil and so enable air and water to enter it. Bacteria, which are microscopic living things break down dead plants and animals and make humus, or take nitrogen from the air and change it into substances that plants use. The living things that do harm include other bacteria and fungi which cause diseases. Other harmful things are pests such as wire worms which feed on the roots of grass and other plants. While the farmer can usually keep weeds in check by careful cultivation, this alone may not protect his crops from insects, pests and diseases. Nowadays, however, he is much better able to control these enemies. He may plant. specially resistant types of seeds or he may keep the pests and diseases in check with chemicals. With better seeds farmers have been able to increase their crop yield . They can grow crops that ripen more quickly and have a stronger resistance to disease, frost or drought. The living things that do harm

First read a passage and then answer the questions following that passage. Soil scientists have shown that the soil teems with millions of living things, many of them useful, others harmful. The living things which are useful include earthworms and various kinds of bacteria. Earthworms loosen the soil and so enable air and water to enter it. Bacteria, which are microscopic living things break down dead plants and animals and make humus, or take nitrogen from the air and change it into substances that plants use. The living things that do harm include other bacteria and fungi which cause diseases. Other harmful things are pests such as wire worms which feed on the roots of grass and other plants. While the farmer can usually keep weeds in check by careful cultivation, this alone may not protect his crops from insects, pests and diseases. Nowadays, however, he is much better able to control these enemies. He may plant. specially resistant types of seeds or he may keep the pests and diseases in check with chemicals. With better seeds farmers have been able to increase their crop yield . They can grow crops that ripen more quickly and have a stronger resistance to disease, frost or drought. Farmers are always careful

First read a passage and then answer the questions following that passage. Soil scientists have shown that the soil teems with millions of living things, many of them useful, others harmful. The living things which are useful include earthworms and various kinds of bacteria. Earthworms loosen the soil and so enable air and water to enter it. Bacteria, which are microscopic living things break down dead plants and animals and make humus, or take nitrogen from the air and change it into substances that plants use. The living things that do harm include other bacteria and fungi which cause diseases. Other harmful things are pests such as wire worms which feed on the roots of grass and other plants. While the farmer can usually keep weeds in check by careful cultivation, this alone may not protect his crops from insects, pests and diseases. Nowadays, however, he is much better able to control these enemies. He may plant. specially resistant types of seeds or he may keep the pests and diseases in check with chemicals. With better seeds farmers have been able to increase their crop yield . They can grow crops that ripen more quickly and have a stronger resistance to disease, frost or drought. Nowadays it is possible to reduce the loss caused by pests and harmful bacteria

Consider following statement regarding microspheres. (i) They were spherical in shape and 1-2 mum in diameter. (ii) They hand concentric double layered boundaries. (iii) They could grow in size but were not able to reproduce. (iv) They used ATP as source of energy. Which of the above statements is/are incorrect?

NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)-NEET-BIOLOGY
  1. The rupture and fractionation do not usualy occur in the water column ...

    Text Solution

    |

  2. Thorn of Bougainvillea and tendril of Cucurbita are examples of :

    Text Solution

    |

  3. Consider the following four measures (1-4) that could be taken to succ...

    Text Solution

    |

  4. World Summit on Sustanable Development (2002) was held in:

    Text Solution

    |

  5. Darwin's Finches are an excellent example of

    Text Solution

    |

  6. Polysome is formed by

    Text Solution

    |

  7. Which one of the following pairs of nitrogenous bases of nucleic acids...

    Text Solution

    |

  8. The fruit is chambered, developed from inferior ovary and has seeds wi...

    Text Solution

    |

  9. Endosperm is consumed by developing embryo in the seed of

    Text Solution

    |

  10. In the DNA molecule

    Text Solution

    |

  11. Given below is a diagrammatic cross section of a single loop of human ...

    Text Solution

    |

  12. Which type of white blood cells are concerned with the release of hist...

    Text Solution

    |

  13. Thermococcus, Methanococcus and Methanobacterium exemplify:

    Text Solution

    |

  14. Which one of the following is being tried in India as a biofuel substi...

    Text Solution

    |

  15. Dry indehiscent single-seeded fruit formed from biscarpellary syncarpo...

    Text Solution

    |

  16. Which one of the following pairs of codons is correctly matched with t...

    Text Solution

    |

  17. Selelct one of the following paris of important features distinguishig...

    Text Solution

    |

  18. Earthworms have no skeleton but during burrowing, the anterior end bec...

    Text Solution

    |

  19. Which one of the following is the true description about an animal con...

    Text Solution

    |

  20. Which extra-embryonic membrane in human prvents desiccation of the emb...

    Text Solution

    |