Organisms Used in Laboratory Work

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Culturing refers to growing a large population of organisms in the lab by providing them with proper space, nutrition, and suitable conditions. It allows scientists and students to study organisms for…

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The four key factors are: (i) knowledge of the organism's natural habitat, (ii) method of collection, (iii) method of culture including container, food, and protection from enemies, and (iv) method of…

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To culture Paramecium, fill a jar with grass, leaves, and vegetable remains. Add water and leave it for about a week at 70–80°F. Bacteria grow on the decaying matter, which serves as food for Parameci…

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Collect Amoeba from pond water containing decaying vegetation. Transfer a few individuals into a sterilized petri dish with water and add a few grains of wheat or rice. Keep the dish in a cool, dark p…

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Paramecium and Amoeba are used to study protozoan structure, movement (ciliary and pseudopodial), and basic life processes. They are microscopic, easy to culture, and help in preparing stained slides …

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Hydra is collected from freshwater ponds where it attaches to aquatic plant leaves. The vegetation is placed in a jar of pond water. To prevent overheating, keep the jar in a cool place. If oxygen is …

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Hydra is sensitive to changes in temperature, water quality, and oxygen levels. It requires clean, oxygen-rich water and a steady supply of small prey like Daphnia. Any imbalance can cause it to detac…

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Take a slice of bread, slightly moisten it, and place it in a closed container in a warm, dark place. After 2–3 days, white cottony growth with black dots (sporangia) appears. A small piece of this gr…