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    Home MCQ examination Jamb Biology 2019

    Biology 2019 Jamb Examination

    Biology 2019 Jamb Examination
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    1...345678

    Question 41

    Only specially adapted micro-organisms are found in
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    Extremophiles, such as halophiles, are micro-organisms specially adapted to survive in highly saline environments where normal organisms cannot live, demonstrating how adaptation allows life in extreme conditions.
    Not clear enough?

    Question 42

    Plants which can survive in extremely dry places are called
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    Xerophytes are adapted to arid environments. They have features like thick cuticles, reduced leaf surface area, and water storage tissues that enable survival in conditions with very limited water availability.
    Not clear enough?

    Question 43

    The presence of ______ for swimming in a tad-pole enables it to adapt in an aquatic habitat.
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    Tadpoles possess tails that provide propulsion in water, allowing efficient swimming. This morphological adaptation ensures they can escape predators, find food, and navigate aquatic environments during their larval stage.
    Not clear enough?

    Question 44

    Possession of thin membrane enables a tapeworm to
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    Tapeworms have a thin, highly absorptive body wall, allowing them to absorb nutrients directly from the host’s intestine efficiently. This adaptation compensates for their lack of a digestive system.
    Not clear enough?

    Question 45

    Which of the following juices contains the enzyme ptyalin?
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    Saliva contains the enzyme ptyalin (salivary amylase), which begins the digestion of starch into maltose in the mouth. This enzymatic activity is a key step in carbohydrate metabolism.
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    Question 46

    Which of the following essential substance is contained in vegetable?
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    Vegetables are rich sources of mineral salts such as calcium, potassium, and iron. These minerals are essential for human nutrition, supporting functions like bone development, nerve conduction, and enzymatic reactions.
    Not clear enough?

    Question 47

    Good quality food will perform the following functions in human except
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    While good quality food provides energy, nutrients, and supports health and growth, it does not directly confer immunity to specific diseases like malaria, which is caused by parasites transmitted by mosquitoes.
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    Question 48

    Which of the following is considered to be the first product of Photosynthesis?
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    The first product of photosynthesis is glucose, which is later stored in plants as starch. Photosynthesis captures light energy, converts CO₂ and H₂O into glucose, forming the primary energy source for plants.
    Not clear enough?

    Question 49

    Which of the blood corpuscles are irregular and amoeboid in shape
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    Leucocytes (white blood cells) are irregular in shape and can move like amoebae. This flexibility allows them to migrate through capillary walls and engulf pathogens, playing a key role in the immune response.
    Not clear enough?

    Question 50

    Which organ removes the largest quantity of water from the blood?
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    The kidneys filter blood to remove water and soluble wastes, forming urine. They are the primary organs responsible for maintaining water balance, electrolyte levels, and excretion of nitrogenous waste.
    Not clear enough?
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