Biology

Biology Multiple Choice Questions and Answers (MCQ) PDF: Quizzes & Practice Tests with Answer Key. This section Biology basic concepts, theory and objective tests.

This section covers following topic MCQs: Bioenergetics, biological molecules, cell biology, coordination and control, enzymes, fungi, recyclers kingdom, gaseous exchange, growth and development, kingdom Animalia, kingdom plantae, kingdom prokaryotae, kingdom protoctista, nutrition, reproduction, support and movements, transport biology, variety of life, and homeostasis etc.

    Cell Cycle
    A particular cell has half as much DNA as some other cells in mitotically active tissue. cell in question is most likely in which of following phases?
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    Coordination and Control
    Which one of the following pair is correctly matched?
    Gibberellins promote internodal growth. Auxin helps in apical dominance. Cytokinin brings about cell division and ethylene promotes ripening of fruits.
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    Cell Cycle
    Mitotic spindle originates from
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    Biology
    The increase in global temperatures is the result of
    Global warming is the unusually rapid increase in Earth`s average surface temperature over the past century primarily due to the greenhouse gases released as people burn fossil fuels
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    Biology
    The xylem vessels in plants are responsible for the transport of
    Xylem transports water and nutrients that enter the plant in the root up through the stem and out to all parts of the leaf. Xylem has two types of cells known as tracheids and vessel elements.
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    Biology
    Who among the following gave the first Theory of Evolution
    In the early 19th century Jean-Baptiste Lamarck (1744–1829) proposed his theory of the transmutation of species, the first fully formed theory of evolution.
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    Biology
    Which of the following helps in promoting stem elongation in a plant?
    Auxin is a plant hormone produced in the stem tip that promotes cell elongation.
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    Life Processes
    What is/are the end product(s) of fat digestion?
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    Life Processes
    Which among the following substances are reabsorbed in the nephron?
    Glucose, amino acids, salts and high amount of water are reabsorbed in the nephron during the second step of urine formation, i.e., the selective reabsorption. These essential substances were filtered out from the blood in the first step called glomerular filtration and are reabsorbed as they are vital for the functioning of our body.
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    Cell Cycle
    Kinase proteins affect activity of other proteins by
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