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प्रश्न
Name any genetically modified crop.
Name a genetically modified crop.
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उत्तर
Bt cotton.
APPEARS IN
संबंधित प्रश्न
With the help of a neat and labelled diagram explain VAM (vesicular arbuscular mycorrhizae).
Trichoderma konigi is a source of _______ enzyme.
(A) invertase
(B) lipase
(C) pectinase
(D) cellulase
State the medicinal value and the bioactive molecules produced by Streptococcus, Monascus and Trichoderma.
How do mycorrhizae act as biofertilizers? Explain.
Mention one advantage and one disadvantage to a farmer who uses them.
What is VAM?
Why are baculoviruses considered good biocontrol agents?
Organic farmers prefer the biological control of diseases and pests to the use of chemicals for the same purpose. Justify
Give an example of a bacterium, a fungus and an insect that are used as biocontrol agents.
Give the biological name of the following:
The microbe used to control insect larvae growing on cotton.
Write a note on biocontrol agents.
Select the odd one from given herbicides.
What is mycorrhiza?
______ are controlled by the microbial herbicide Phytophthora palmivora.
From the following which one is NOT a bacterial herbicide?
Which of the following is the INCORRECT statement?
Identify the reason/s due to which Trichoclerma species is a potent biocontrol agent.
Farmers have reported over 50% higher yield of rice by using which of the following biofertilizers?
Match the items in Column ‘A’ and Column ‘B’ and choose correct answer.
| Column I | Column II |
| A. Lady bird | i. Methano bacterium |
| B. Mycorrhiza | ii. Trichoderma |
| C. Biological control | iii. Aphids |
| D. Biogas | iv. Glomus |
The correct answer is:
Organic farmer use Trichoderma as biological control agents. Explain.
Nucleopolyhedrovirus do not show ______.
Which of the following is incorrect regarding Bacillus thuringiensis?
A farmer grew 2 varieties of corn crops in fields A and B. He grew normal corn crops in field A and GM corn crops in field B. He observed corn borers attacked only in field A. To control it, spores of Bt were sprayed in field A.
- Name the gene in the spores responsible for the control of this pest.
- What effect will the spores of Bt have on the insect pest?
- How has field B developed resistance against this pest?
give any two examples of microbial herbicides.
Explain how Bacillus thuringiensis acts as a bio-control agent.
