Advertisements
Advertisements
Question
Name the type of association that the genus Glomus exhibits with higher plants.
Solution
Glomus exhibits symbiotic association with higher plants called mycorrhiza. The root of the plant provides food and shelter to the fungus, and in return, the fungus helps the plant in solubilisation and absorption of minerals, water uptake and protection against pathogenic fungi
RELATED QUESTIONS
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
Name a genus of baculovirus.
Which of the following is the INCORRECT statement?
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:
Describe the main ideas behind the biological control of pests and diseases.
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?
Define bioherbicides.
give any two examples of microbial herbicides.
Explain how Bacillus thuringiensis acts as a bio-control agent.
