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    Home MCQ examination Jamb Biology 2010

    Biology 2010 Jamb Examination

    Biology 2010 Jamb Examination
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    1...345

    Question 41

    If both parents are heterozygous for a trait, the probability that an offspring will be recessive for that trait is?
    Show explanation Expand Question
    When both parents are heterozygous (Tt Ă— Tt), the Punnett square gives TT, Tt, Tt, and tt. Only 1 out of 4 (tt) is recessive, giving a probability of 1/4.
    Not clear enough?

    Question 42


    Use the diagram above to answer this question. In which plantation are all the trees between the height of 2-4m?
    Show explanation Expand Question
    From the diagram, plantation III contains trees whose heights all fall within the 2–4m range, unlike the other plantations which include wider variations.
    Not clear enough?

    Question 43

    Use the diagram above to answer this question. Which of the following is a true feature of plantation ll?
    Use the diagram above to answer this question. Which of the following is a true feature of plantation ll?
    Show explanation Expand Question
    Plantation II contains the highest number of trees about 2m high.
    Not clear enough?

    Question 44

    Use the diagram above to answer this question. The movement of material in the xylem and phloem tissues of the plant are represented by the arrows labeled?
    Use the diagram above to answer this question. The movement of material in the xylem and phloem tissues of the plant are represented by the arrows labeled?
    Show explanation Expand Question

    xylem, plant vascular tissue that conveys water and dissolved minerals from the roots to the rest of the plant and also provides physical support.

    Phloem is a living tissue in vascular plants which conducts the soluble organic compounds synthesized during photosynthesis downwards from the leaves.

    Not clear enough?

    Question 45

    Use the diagram above to answer this question. During photosynthesis, the arrow labeled II represents the?
    Use the diagram above to answer this question. During photosynthesis, the arrow labeled II represents the?
    Show explanation Expand Question
    Arrow II shows oxygen leaving the leaf. This is the release of oxygen as a by-product of photosynthesis.
    Not clear enough?

    Question 46

    Use the diagram above to answer this question.The main function of the feathers covering the part labeled I is to?
    Use the diagram above to answer this question.The main function of the feathers covering the part labeled I is to?
    Show explanation Expand Question
    The feathers covering that part serve as an insulator to maintain body heat, which helps regulate the bird’s temperature.
    Not clear enough?

    Question 47

    Use the diagram above to answer this question based on the shape and structure of the beak and feet, the bird represented is likely to feed mainly on?
    Use the diagram above to answer this question based on the shape and structure of the beak and feet, the bird represented is likely to feed mainly on?
    Show explanation Expand Question
    The bird’s beak and feet are adapted for feeding on flesh, indicating it is a carnivorous bird of prey.
    Not clear enough?

    Question 48

    Use the diagram above to answer this question.With respect to their decreasing dependence on aquatic conditions for reproduction, which of the following is the correct arrangement of the animals represented?
    Use the diagram above to answer this question.With respect to their decreasing dependence on aquatic conditions for reproduction, which of the following is the correct arrangement of the animals represented?
    Show explanation Expand Question

    - Like frogs, most toads lay their fertilized eggs in water, where they hatch into tadpoles before developing into adult toads. These amphibians need a safe, undisturbed body of water to lay their eggs in. However, a few species breed on land.

    - the mother alligator typically lays about 35 eggs in a nest made of mud, sticks and other plant matter. 

    - Rabbits sometimes dig a burrow in which to give birth

    Not clear enough?

    Question 49

    In the diagram, which of the animals represents the oldest creatures in terms of evolutionary history?
    In the diagram, which of the animals represents the oldest creatures in terms of evolutionary history?
    Show explanation Expand Question
    The feathers covering that part serve as an insulator to maintain body heat, which helps regulate the bird’s temperature.
    Not clear enough?

    Question 50

    (a)(i) Name the organisms to which specimens A and B belong.

    (ii) State the habitats of the organisms named in 1(a) above.

    (b) State how the structure of specimens A and B adapt the organisms to their mode of life.

    (c)(i) Outline one difference. (ii) two similarities between specimens A and B.

    (d) Make drawing 8–10 cm long of specimen B and label fully.
    Show explanation Expand Question
    This is a structured essay question requiring descriptive answers, not multiple-choice selection.
    Not clear enough?
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