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.

    Life Processes
    The tiny pores through which leaves take in carbon dioxide from the atmosphere are known as:
    Leaves of the plants have microscopic openings called stomata. These stomata help in the process of exchange of gases i.e., uptake of CO2 and release of by product of photosynthesis i.e., oxygen, into the atmosphere.
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    Heredity and Evolution
    The closest ancestor of modern human beings were called
    Neanderthals are the closest extinct ancestor of modern human beings. They both belong to the same genus (Homo) and shared 99.7% similarity in their DNA.
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    Homeostasis
    Homeostasis relies on feedback to achieve its aims. “Negative” feedback refers to which situation below? The body’s response:
    “Negative” refers to the opposing nature of the response.
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    Cell Cycle
    Which of following is an example of an anticancer drug?
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    Cell Cycle
    A tumor that can cause serious problems in body is called:
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    Cell Cycle
    How many DNA molecules are present in a prokaryotic genome?
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    Biodiversity Introduction
    Which species found in abundance ?
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    Common Human Diseases
    Name the most common type of Cancer that kills men in the world?
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    Reproduction System
    During pollination, pollen grains get carried to _______ of the carpel.
    Pollination is the transfer of pollen grains from the anther of one flower to the stigma of the same or another flower. Pollen grains contain the male gamete and are present in the anthers of the flower. If the pollen grains land on the sticky surface called stigma of a suitable flower of the same species, a chain of events happen that ends in the development of seeds. The pollen grain on the stigma, grows a tiny tube, all the way down the style to the ovary. The ovary develops into a fruit after fertilisation.
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    Cell Cycle
    Which of following is an example of a gonad?
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