Assertion: In spite of not having nervous system, plants can sense things.
Reason: Plants can sense things with the help of hormones.
Both assertion and reason are correct and reason is the correct explanation of assertion.
Both assertion and reason are correct but reason is not the correct explanation of assertion
Assertion is true but Reason is false.
Assertion is false but Reason is true.
(1)
Plant hormones help them to sense changes in the environment even if they do not have eyes, ears or nose. Thus, both assertion and reason are correct and reason is the correct explanation of the assertion.
Assertion: Cytokinins promote cell division in plants.
Reason: Full form of ABA is abscisic acid.
Both assertion and reason are correct and reason is the correct explanation of assertion.
Both assertion and reason are correct but reason is not the correct explanation of assertion.
Assertion is true but Reason is false.
Assertion is false but Reason is true
(2)
Both the statements are true, but full form of ABA has no relation with the function of cytokinin. Thus, both assertion and reason are correct but reason is not the correct explanation of the assertion.
Assertion: Auxin is responsible for the phototropic and geotropic responses of plants.
Reason: Thigmonasty is the movement of a plant part in response to the water.
Both assertion and reason are correct and reason is the correct explanation of assertion.
Both assertion and reason are correct but reason is not the correct explanation of assertion.
Assertion is true but Reason is false.
Assertion is false but Reason is true
(3)
Assertion is true, but thigmonasty is the movement of plant part in response to the touch of an object. Thus, assertion is true but reason is false.
Assertion: Damage to the medulla oblongata causes death.
Reason: Medulla oblongata controls involuntary functions of the body.
Both assertion and reason are correct and reason is the correct explanation of assertion.
Both assertion and reason are correct but reason is not the correct explanation of assertion.
Assertion is true but Reason is false.
Assertion is false but Reason is true
(1)
Medulla controls circulation, respiration, reflexes like swallowing, coughing, peristaltic movement of gut. So, damage to the medulla will stop circulation and respiration and eventually cause death. Thus, both assertion and reason are correct and reason is the correct explanation of the assertion.
Assertion: Cerebrum controls the body posture.
Reason: Cerebrum is not connected to internal ear.
Both assertion and reason are correct and reason is the correct explanation of assertion.
Both assertion and reason are correct but reason is not the correct explanation of assertion.
Assertion is true but Reason is false.
Assertion is false but Reason is true
(4)
It is the cerebellum which controls body posture and cerebrum is not connected to internal ear. Thus, assertion is false but reason is true.
Assertion: Synapse is a gap through which nerve impulse pass from one neuron to the next.
Reason: Neuron is the functional unit of nervous system.
Both assertion and reason are correct and reason is the correct explanation of assertion.
Both assertion and reason are correct but reason is not the correct explanation of assertion.
Assertion is true but Reason is false.
Assertion is false but Reason is true
(2)
Synapse and neuron has no relation regarding function. Neuron is the functional unit but that does not define synapse. Thus, both assertion and reason are correct but reason is not the correct explanation of the assertion.
Assertion: Neurons transmit messages all across different parts of the body.
Reason: Acetylcholine is a neuro inhibitor.
Both assertion and reason are correct and reason is the correct explanation of assertion.
Both assertion and reason are correct but reason is not the correct explanation of assertion.
Assertion is true but Reason is false.
Assertion is false but Reason is true
(3)
Acetylcholine is a neurotransmitter, not neuro inhibitor. Thus, assertion is true but reason is false.
Assertion: It is advised to have iodised salt in our diet.
Reason: It prevents us from goitre.
Both assertion and reason are correct and reason is the correct explanation of assertion.
Both assertion and reason are correct but reason is not the correct explanation of assertion.
Assertion is true but Reason is false.
Assertion is false but Reason is true
(1)
Iodine is very necessary for the production of the hormone thyroxine, lack of thyroxine causes goitre in the body. So, iodine is necessary to prevent goitre. Thus, both assertion and reason are correct and reason is the correct explanation of the assertion
Assertion: Adrenaline is called the emergency hormone.
Reason: It prepares the body to fight away the emergency situation.
Both assertion and reason are correct and reason is the correct explanation of assertion.
Both assertion and reason are correct but reason is not the correct explanation of assertion.
Assertion is true but Reason is false.
Assertion is false but Reason is true
(1)
Adrenaline prepares the body to function at maximum efficiency during emergency situations like danger, anger, excitement. Thus, both assertion and reason are correct and reason is the correct explanation of the assertion.
Assertion: Diabetes mellitus is caused due to lack of insulin in the body.
Reason: Insulin helps in utilisation of glucose in the body.
Both assertion and reason are correct and reason is the correct explanation of assertion.
Both assertion and reason are correct but reason is not the correct explanation of assertion.
Assertion is true but Reason is false.
Assertion is false but Reason is true
(1)
Insulin is a hormone released by the beta cells of the pancreas. It maintains the blood glucose level in the body, by its proper utilisation. So, lack of insulin causes accumulation of glucose in the blood and hence a disease called diabetes mellitus is caused. Thus, both assertion and reason are correct and reason is the correct explanation of the assertion.
