Biology - Control and Coordination

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71. Assertion (A) : The sympathetic nervous system prepares the body to meet any emergency situation.
Reason (R) : The sympathetic nervous system is stimulated by the hormone oxytocin during emergency situation.
Select the correct option from the given altematives (NTSE Karnataka, Stage-I, 2016-17)

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72. Name the plant hormone responsible for falling of  senescent leaves. (NTSE Chandigarh, Stage-I, 2016-17)

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73. In a neuron, conversion of electrical signal to a chemical signal occurs at/in (NTSE Chandigarh, Stage-I, 2016-17)

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74. Geetha is unable to walk in a straight line. Which part of the brain is affected? (NTSE Tamil Nadu, Stage-I, 2016-17)

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75. Thyroxin regulates which of the following metabolisms in the body? (NTSE Chandigarh, Stage-I, 2015-16)

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