Please select a subject first
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Give one significant contribution of the given scientists:
P. Maheshwari
Concept: Methods of Crop Improvement >> Tissue Culture
Describe the tissue culture technique in plants.
Concept: Methods of Crop Improvement >> Tissue Culture
What is a clone?
Concept: Methods of Crop Improvement >> Tissue Culture
Choose the correct option of the following question:
The pressure of the cell contents on the cell wall is known as:
Concept: Single Cell Protein (SCP)
What is a single cell protein? How is it significant for human welfare?
Concept: Single Cell Protein (SCP)
Expand the following abbreviation: SSBP
Concept: Single Cell Protein (SCP)
List any four applications of tissue culture.
Concept: Methods of Crop Improvement >> Tissue Culture
Give one significant difference between :
ECG and EEG
Concept: Methods of Crop Improvement >> Tissue Culture
Explain the steps involved in the process of plant breeding.
Concept: Steps in Plant Breeding
Expand DDT
Concept: Microbes in Industrial Products
Give reasons for the following:
Nitrogenous fertilizers are not applied in fields where leguminous crops grow.
Concept: Microbes as Biocontrol Agents
Why are the spores of Bacillus thuringiensis used as bioinsecticide?
Concept: Microbes as Biocontrol Agents
Give the biological name of the following:
The mould from which penicillin is obtained.
Concept: Microbes in Industrial Products
Give the biological name of the following:
The microbe used to control insect larvae growing on cotton.
Concept: Microbes as Biocontrol Agents
Give the biological name of the following:
The microbe used to produce Swiss cheese.
Concept: Microbes in Household Products
Give the biological name of the following:
The fungus that is being developed as a bio-control agent.
Concept: Microbes as Biocontrol Agents
Give the biological name of the following:
A symbiotic nitrogen-fixing bacterium found in root nodules.
Concept: Microbes in Household Products
Which one of the following factors is responsible for activation of protoxin into active Bt toxin of Bacillus thuringiensis?
Concept: Microbes in Household Products
Home-made fruit juices are turbid, while the bottled ,fruit juices purchased from the market are clear. Give a reason for this difference.
Concept: Microbes in Household Products
Read the passage given below carefully and answer the questions that follow:
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The bacterium Bacillus thuringiensis serovar israelensis (Bti) is commercially prepared in various formulations such as liquid, water dispersible granules, powders, and pellets. It is used as a larvicide all over the world due to its ability to produce a toxic protein that primarily targets the larvae of mosquitoes. In Sweden, Bti has been applied on a large scale in the form of commercially available granular formulation Vecto Bac G (Valent BioScience, USA). The applications have taken place in the lower Dalalven River Area to control mass outbreaks of the floodplain mosquito Aedes sticticus. |
- Why does the toxic protein kill the insects but not the bacterium?
- Can the formulation Vecto Bac G be used to eliminate the species of mosquito referred to above? Why?
Concept: Microbes in Household Products
