Biology MCQs

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An endoscopy is used in medicine to look for the ulcers in the stomach. The endoscopy procedure uses an endoscope to examine the interior of a hollow organ or cavity of the body. Unlike many other medical imaging techniques, endoscopes are inserted directly into the organ.

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The main product of photosynthesis is glucose, which is the molecule that produces energy to run the processes of the cell. Oxygen is mainly a byproduct of the process of photosynthesis. Six molecules of carbon dioxide and six molecules of water are needed to produce one molecule of glucose.

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Pasteurization is the process of heating milk up and then quickly cooling it down to eliminate certain bacteria and all other microorganisms. More common is heating milk up to at least 161.6 degrees Fahrenheit for 15 seconds. There are following methods that are most commonly used:
• High Temperature, Short Time (HTST) method – This method requires that the milk be held at 161 degrees for 16 seconds.
• Ultra-Pasteurization (UP) – This is the type of pasteurization that you will most commonly see on cartons of milk, half-and-half and heavy cream.

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Biofertilizers are substances that contain microorganisms, which when added to the soil increase its fertility and promote plant growth. Urea is not a biofertilizer.

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Ethnobotany is the study of the plants of an area and their practical uses through the traditional knowledge of a local culture and people.

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Angiosperms are plants that produce flowers. They hold their seeds in the fruits. They are the largest and most diverse group within the Plantae kingdom, with approximately 300,000 species. Double fertilization is a characteristic of angiosperms in which both a diploid zygote and a triploid endosperm are formed in this process of green fertilization.

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Wolffia belong to Angiosperms. Angiosperms are seed-bearing vascular plants that have a well-differentiated plant body. The seeds of angiosperms are enclosed within the fruit.

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All prokaryotes have 70S (S = Svedberg units) ribosomes whereas eukaryotes have large 80S ribosomes in their cytosol.

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No septa are found in Vaucheria except in the reproductive stage. Many of its nuclei are moved around which is known as the alga coenocytic thallus.

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Complex Permanent Tissue tissues include phloem and xylem. Xylem helps in the transport of water and soluble components.
Phloem helps in the transportation of food particles.