6. Control & Coordination

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Assertion & Reason Quiz

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1.Assertion (A): A neuron transmits messages in both directions. Reason (R): Neuron is specialised for conducting information via electrical impulses from one part of body to another: *

1 point

Both Assertion (A) and Reason (R) are true but Reason (R) Is not the correct explanation of Assertion (A).

Assertion (A) is true but Reason (R) is false.

Assertion (A) Is false but Reason (R) is true.

Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).

2.Assertion (A): Cerebellum controls the coordination of body movement and posture. Reason (R): Medulla oblongata controls and regulates the centre for coughing, sneezing and vomiting. *

1 point

Assertion (A) Is false but Reason (R) is true.

Both Assertion (A) and Reason (R) are true but Reason (R) Is not the correct explanation of Assertion (A).

Assertion (A) is true but Reason (R) is false.

Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).

3. Assertion (A): Movement of leaves of sensitive plant is different from movement of a shoot towards light. Reason (R): Sensitive plant shows seismonastic movements which are due to turgidity of cells whereas the movement of shoot is a tropic movement. *

1 point

Assertion (A) is true but Reason (R) is false.

Both Assertion (A) and Reason (R) are true but Reason (R) Is not the correct explanation of Assertion (A).

Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).

Assertion (A) Is false but Reason (R) is true.

4.Assertion (A): Adrenaline makes the heartbeat faster, resulting in supply of more oxygen to our muscles. Reason (R): Adrenaline is secreted directly into the blood and carried to different parts of the body *

1 point

Both Assertion (A) and Reason (R) are true but Reason (R) Is not the correct explanation of Assertion (A).

Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).

Assertion (A) Is false but Reason (R) is true.

Assertion (A) is true but Reason (R) is false.

5.Assertion (A): Amount and timing of hormones released are regulated by feedback mechanisms. Reason (R): Hypersecretion or hyposecretion of any hormone can lead to different disorders *

1 point

Assertion (A) is true but Reason (R) is false.

Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).

Assertion (A) Is false but Reason (R) is true.

Both Assertion (A) and Reason (R) are true but Reason (R) Is not the correct explanation of Assertion (A).

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