Biology MCQs

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LH hormones are surges that trigger ovulation. It is released by the anterior pituitary.

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The genetic heritage passed down by our biological parents is known as Heredity.

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M.S. Swaminathan led the Green Revolution in India. It was a part of the Green Revolution led by Norman Borlaug, it focused on increasing agricultural yields, especially in the states of Haryana, Punjab, and Uttar Pradesh.

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RNA interference is the method of cellular defense in animals and plants.

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Tamarind tree (Tamarindus indica), Ashoka tree (Saraca Indica), Indian Coral tree (Erythrina Indica) have ‘Indica’ common in their botanical names. In biology/taxonomy, if a species originates in India, its scientific name sometimes includes “Indica”.

Notes:
The principal chemical component of vegetable fibres is cellulose, with varying amounts of lignin and hemicelluloses also usually present; thus, the fibres are also referred to as cellulosic or lignocellulosic. Examples include cotton, hemp, jute, flax, ramie, sisal, bagasse, and banana. Vegetable fibres are usually stiffer but less tough than synthetic fibres.

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An osteocyte, a star shaped cell, is the most commonly found cell in mature bone, and can live as long as the organism itself. Osteocytes are networked to each other via long cytoplasmic extensions that occupy tiny canals called canaliculi, which are used for exchange of nutrients and waste through gap junctions. The space that an osteocyte occupies is called a lacuna.

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Feed cost is one of the important variable costs that plays a big role in determining the poultry cost. Variable costs rise and fall with the size of the output and the level of the operation. Fixed costs (for items such as taxes, insurance, interest, and depreciation on buildings and equipment), are incurred whether or not there is any output. Moreover the feed of broilers and layers varies with time of their growth.

Notes:
Cinnamon is a spice obtained from the inner bark of several trees from the genus Cinnamomum that is used in both sweet and savoury foods. The bark must be processed immediately after harvesting while still wet. Once processed, the bark will dry completely in four to six hours, provided that it is in a well-ventilated and relatively warm environment.

Notes:
Along with duck-billed platypus, the four species are among the five species of monotremes, the only mammals that lay eggs instead of giving birth. Echidna, also known as the Spiny Anteater, is a primitive oviparous (egg-laying) mammal that lives in Australia and New Guinea. Echidnas lay a single egg in a pouch on the female’s belly.