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Biology Test 28...

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  • Question 1
    4 / -1

    Pineapple (ananas) fruit develops from

  • Question 2
    4 / -1

    The aleurone layer in maize grain is especially rich in

  • Question 3
    4 / -1

    What would be the number of chromosomes of the aleurone cells of a plant with 42 chromosomes in its root tip cells?

  • Question 4
    4 / -1

    Stem modified to perform the function of a leaf and having many internodes is called as

  • Question 5
    4 / -1

    A typical lower with superior ovary and other floral parts inferior is called:

  • Question 6
    4 / -1

    The given figure shows an angiogram of the coronary blood vessel. Which one of the following statements correctly describes, what is being done?

  • Question 7
    4 / -1

    Read the following statements and select the correct ones.

    (i) Nodal tissue is specialised cardiac musculature in human heart which has the ability to generate action potential due to an external stimuli
    (ii) Position of SAN - right corner of right atrium
    (iii) Position of AVN - right corner of ventricle
    (iv) AV bundle continues from AVN
    (v) Purkinje fibres are modified cardiac muscle fibres that originate from the atrioventricular node and spread into the two ventricles.

  • Question 8
    4 / -1

    Coronary arteries supplies

  • Question 9
    4 / -1

    In the above diagram, which blood vessel represents vena cava?

  • Question 10
    4 / -1

    Rate of heart beat is determined by

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