Organisms Used in Laboratory Work — Practice Quiz
Telangana Open School (TOSS) · Class 12 · Biology
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Quick Quiz: Organisms Used in Laboratory Work
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Which of the following organisms is commonly cultured in the laboratory for studying cell division?
What is the main purpose of culturing organisms in the laboratory?
Which of the following is used to culture Drosophila in the laboratory?
Which organism is known as the bread mould?
Sample Questions
What is the optimal temperature for culturing Drosophila?
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25°C
The optimal culture temperature for Drosophila is 25°C. Cultures are often maintained in a BOD (Biological Oxygen Demand) incubator at this temperature for best results.
Which equipment is used to press and dry plant specimens?
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Plant press
A plant press is used to press fresh plant specimens so they can be dried and mounted permanently. It comes in two types: lab press and field press.
Where is Hydra typically collected from?
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Freshwater ponds
Hydra is collected from freshwater ponds where it sticks to the leaves of aquatic plants. It is difficult to rear in the lab, so it's usually collected directly from natural water bodies.
Which of the following is added to the Drosophila culture medium to prevent fungal growth?
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Propionic acid
A drop of propionic acid is added to the Drosophila culture medium to inhibit fungal growth, ensuring that the medium remains suitable for fruit fly development.
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