Biology MCQs

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Wounds on the chorioallantoic membrane are produced by Herpes B virus, Vaccinia virus and Herpes simplex virus.

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Rhizobium is an organic fertilizer. Biofertilizers are substances that contain microorganisms that, when applied to the soil, increase the amount of nutrients. It also enhances the growth of plants.

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Flagella is responsible for the motility of bacteria. The flagellum is primarily a motility organ. This enables movement and chemotaxis.

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A bryophyte that has nitrogen-fixing blue-green algae in its thallus is Anthoceros. Species of Anthoceros have a small to medium-sized green thallus.

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Thylakoid is the structural unit of photosynthesis and it is present in the stroma, stroma is present in the inner structure of the chloroplast.

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Gametogenesis is the formation of male and female gametes while Gamete transfer brings the male and female gametes together.

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Schistosoma and Fasciola are examples of Platyhelminthes. Schistosoma causes Schistosomiasis which spreads through contaminated water and Fasciola causes fascioliasis in animals in which the liver of the animal enlarges and the bile ducts are blocked.

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Gelatin is a protein made from Collagen. Collagen is one of the materials that make up cartilage, bone, and skin. Gelatin is used for the preparation of foods, cosmetics, and medicines.

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Alpaca, Llama, and yak animals are used in the production of fabric. The yak is an animal that is largely found in the Himalayas in India and Tibet, Llamas are animals typically found in South America and Alpacas are small camel-like animals found largely in South America.

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Sinuses are the bone around the nose that contains hollow, air-filled chambers. Mucus from the sinuses flows into the nasal cavity.