Biology MCQs

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Cellulose is the most abundant organic compound on Earth, being a major component in the cell walls of plants. This complex carbohydrate provides structure and support for the plant and is indigestible to humans. Nonetheless, it is an important dietary element known as dietary fiber. It is notable for its role in the paper, textile, and food industries, and for its potential use in renewable energy sources like biofuels.

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Vitamin A, D & C are respectively called as Retinol, Calciferol and Ascorbic Acid. Vitamin A is essential for good vision, a healthy immune system, and cell growth. Vitamin D is a fat-soluble vitamin whereas Vitamin C is a water-soluble vitamin which is found in many foods, particularly fruits and vegetables.

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Vitamin C which is also called ascorbic acid can be replaced with citric acid. Vitamin C is a water-soluble vitamin which is found in many foods, particularly fruits and vegetables. It is a potent antioxidant, and has a positive effects on skin health and immune function.

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Cystitis is related to Bladder

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Marine mammals are a diverse group of animals. They include cetaceans (whales, dolphins, and porpoises), sirenians (manatees and dugong), pinnipeds (true seals, eared seals and walrus), a few otters (the sea otter and marine otter) and the polar bear (usually grouped with the marine mammals).

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The Great Zebra, Lesser Zebra and Spotted Zebra are the swallowtail butterfly found in the Southeast Asia, which are relatively common and not threatened species.

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Hemoglobin is the iron-containing oxygen-transport metalloprotein in the red blood cells of almost all vertebrates as well as the tissues of some invertebrates. Haemoglobin in the blood carries oxygen from the lungs or gills to the rest of the body.

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Algae is an informal term for a large, diverse group of photosynthetic eukaryotic organisms that are not necessarily closely related, and is thus polyphyletic.

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There is currently no way to transplant an entire eye. Ophthalmologists can, however, transplant a cornea. When someone says they are getting an “eye transplant,” they are most likely receiving a donor cornea, which is the clear front part of the eye that helps focus light so that you can see.

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This question is might have trapped almost all of you. The option A which etymologically linked to the question would trap you. We should note that Abscisic acid plays any significant role in leaf abscission is unfortunately not proved. The hormone is also called Dormin and its major functions are inhibition. But abscission of leaves is something better explained by Auxin-ethylene roles. Kindly surf the web and try to find out, if I am right. Inhibition of growth and maintenance of the dormancy of buds are the most striking effects of ABA. ABA activity alone is not enough to keep the dormancy of buds up in the long term though. Further, ABA is an efficient inhibitor of germination and occurs in high concentrations in dormant seeds. The role ABA has during the abscission of fruits and leaves is largely unknown. Though both cases seem to be governed by similar mechanisms (Auxin-Ethylene to a great extent) has ABA nearly no effect on the abscission of leaves while it shows a clear effect on fruit abscission. The role of Abscisic acid in abscission was a pharmacological artifact…applied AbA often induces ethylene biosynthesis.