11th Class Biology Sample Paper Biology Sample Paper-1

  • question_answer
    The given figure shows main endocrine glands   in human body. Identify X, Y and Z and select the correct option.

    A)  Y is the largest endocrine gland which secretes thyroxine and triido-thyronine hormones.

    B)  Gland Z is found in pair and works in coordination with sympathetic nervous system.

    C)  Gland X is located between the cerebral hemispheres and secretes MSH which maintains biologicsssal clock.

    D)  All of these.

    Correct Answer: B

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