Why is the use of iodised salt advisable?

Which of the following is an example of an involuntary action controlled by the medulla?

A nerve impulse is essentially a flow of:

The control and coordination in plants is mainly achieved by:

Which of the following is not a plant hormone?

What is the role of an olfactoreceptor?

The part of the human brain that deals with emotions, learning, and memory is primarily the:

The hormone responsible for the development of secondary sexual characteristics in females is:

What is the function of cerebrospinal fluid?

Which of the following is a non-directional movement?

The endocrine gland located near the stomach that produces digestive enzymes and hormones is the:

What is the primary role of the motor neurons?

The response of a plant to gravity is called:

Which of the following is not a part of the human brain?

The feedback mechanism that regulates the secretion of hormones like thyroxine is typically:

Which of these is a plant hormone that promotes stem elongation and cell division?

What is the role of interneurons (relay neurons) in the reflex arc?

The specialized tip of a neuron that transmits signals to another neuron or an effector cell is the:

The thyroid gland secretes a hormone called:

Which plant hormone helps in the closing of stomata under water stress?

The growth of a root towards water is an example of:

Which part of the brain is the main control center for vision?

A sudden, involuntary response to a stimulus is called a:

The function of the gustatory receptors is to detect:

Which of the following statements describes the main difference between plant and animal hormones?

The condition characterized by abnormally high growth due to excess growth hormone is called:

Myelin sheath in neurons helps to:

What is the general direction of nerve impulse transmission within a neuron?

The ability of living organisms to respond to stimuli is called:

Which hormone is secreted by the adrenal medulla?

The part of the human brain that is responsible for our sense of hearing and smell is located in the:

The immediate cause of the leaves of the 'touch-me-not' plant drooping upon touching is:

The nervous system primarily uses ______________ signals, while the endocrine system primarily uses ______________ signals.

Which gland is responsible for secreting sex hormones in females?

The role of the Pons in the brain is to:

A plant stem growing towards light shows:

The main function of taste buds is to:

The outer protective layer of the brain is called the:

Which of the following statements about tropic movements is correct?

A person suffering from diabetes may be advised to take injections of:

The structure of the brain that connects the two cerebral hemispheres is the:

The cells that provide support and nutrition to neurons are called:

Which of these is a response to light in a plant, but is a non-directional movement?

What happens at the synapse?

The growth of tendrils around a support is an example of:

The dropping of leaves in plants in response to cold weather or drought is promoted by:

Which system prepares the body for action in stressful situations?

The 'fight or flight' hormone is:

Which of the following is a feature of hormones?

What is the main function of the hypothalamus?

The part of the forebrain specialized for hearing, smell, memory, and emotions is the:

Diabetes is caused by the inability of the body to produce sufficient:

Which plant hormone is involved in breaking seed dormancy?

The role of the 'effector' in a reflex arc is to:

Which of the following is responsible for converting electrical signals into chemical signals at the synapse?

What is the role of receptors in the nervous system?

The peripheral nervous system (PNS) consists of:

The central nervous system (CNS) includes:

The junction where an impulse is transmitted from one neuron to another is called a:

The neuron consists of:

Which hormone is responsible for the development of secondary sexual characteristics in males?

Nastic movements in plants are:

Which part of the brain controls involuntary actions like breathing, heartbeat, and blood pressure?

The movement of water-sensitive roots towards water is an example of:

Lack of growth hormone during childhood leads to:

A plant hormone that promotes cell division is:

The main function of the spinal cord is to:

Which of the following hormones is secreted in response to stress or emergency situations?

The phenomenon of plants bending towards a source of light is called:

What protects the brain from physical shocks?

The part of the neuron that receives information from other neurons is the:

Sensory receptors in the skin that detect touch are called:

The chemical messengers secreted by endocrine glands are called:

The main coordinating center of the body is the:

Which plant hormone inhibits growth and promotes dormancy?

The hormone that regulates the basal metabolism rate in the body is:

Root growing downwards into the soil is an example of:

The cerebrum is the part of the brain responsible for:

Which of the following is a tropic movement?

The hormone insulin is secreted by the:

Touching a hot object and immediately withdrawing the hand is an example of:

The functional unit of the nervous system is the:

Which plant hormone promotes fruit ripening?

Deficiency of iodine in the diet can lead to:

Which of the following is an involuntary action?

Which gland is known as the master gland?

The growth of pollen tubes towards ovules is an example of:

The gap between two neurons is called a:

The plant hormone responsible for cell elongation in shoots and phototropism is:

Which of the following is a component of the reflex arc?

The main function of the human brain is to:

The two main systems of control and coordination in higher animals are:

The regulation of blood pressure and heart rate during an emergency is mainly controlled by:

Which of the following is an example of a tropic movement in plants?

Plants use hormones for:

Which hormone is secreted by the pituitary gland to control the growth of bones and muscles?

When you touch a hot object, your hand immediately pulls away. This action is coordinated by the:

The ability to write, speak, and solve problems is controlled by the:

Which plant hormone delays the aging of leaves?

The growth of a tendril around a support is due to a differential growth rate between the side in contact with the support and the side away from the support. This is:

If the optic nerve is damaged, which sensation will be affected?

The primary difference between a reflex action and walking is that reflex action is:

A condition characterized by protruding eyes, weight loss, and increased metabolism is due to the overactivity of which gland?

Which plant hormone is responsible for breaking seed dormancy?

The relay neurons are found in the:

Which of the following protects the spinal cord?

The brain and spinal cord together constitute the:

Which of the following ensures that a plant grows in the correct direction relative to its environment?

A patient reports excessive thirst and frequent urination. These symptoms could indicate a problem with the regulation of:

Which gland produces both hormones and digestive enzymes?

The role of effectors in the nervous system is to:

The role of receptors in the nervous system is to:

Increased secretion of growth hormone in adulthood can lead to:

If a person has low levels of growth hormone in childhood, they may suffer from:

The main function of the thyroid gland is to:

Which part of the brain coordinates the function of various organs in the body?

The space between the axon terminal of one neuron and the dendrite of another neuron is called the:

Which of the following is a specialized end of a neuron that releases chemical substances at the synapse?

The receptors for smell are located in the:

Which system provides slower responses in animals, but its effects are generally long-lasting?

Which system provides faster responses in animals, but its effects are generally short-lived?

The hormone responsible for the 'apical dominance' phenomenon in plants is:

Which of the following hormones is associated with seed dormancy?

When a seed germinates, the shoot grows upwards. This is:

The opening and closing of stomata is regulated by:

Which movement in plants is non-directional and independent of the direction of stimulus?

The response of plant roots to move towards water is called:

Which hormone prepares the uterus for pregnancy?

The pancreas secretes:

Which hormone is secreted by the adrenal glands?

The main function of the hypothalamus is to:

Which type of neuron carries impulses from the central nervous system to the muscles or glands?

The insulating sheath around the axon of a neuron is called:

The longest part of a neuron is typically the:

Which part of the brain is responsible for interpreting sensations like touch, pain, and temperature?

Damage to the medulla oblongata would most likely affect:

The main function of the cerebellum is to:

Which of the following is a growth-inhibiting hormone in plants?

The increase in growth of a plant stem due to light is mediated by:

A plant's root generally shows:

A plant's shoot generally shows:

The leaves of the Mimosa pudica plant (touch-me-not) fold up when touched. This is an example of:

Which of the following is NOT a type of tropism?

Tendrils coiling around a support is an example of:

The growth of pollen tubes towards the ovules is an example of:

The movement of a plant part in response to gravity is called:

Which gaseous plant hormone is responsible for fruit ripening?

The plant hormone that inhibits growth and causes wilting of leaves is:

Which plant hormone promotes cell division?

Which plant hormone is primarily responsible for stem elongation and seed germination?

Roots growing downwards into the soil is an example of:

The bending of a plant shoot towards light is an example of:

Which plant hormone promotes cell elongation and is responsible for phototropism?

Which of the following represents a negative feedback mechanism?

The timing and amount of hormone release are regulated by:

The female sex hormones are:

Which of the following is a male sex hormone?

A person suffering from diabetes has a deficiency of which hormone?

The hormone that regulates blood sugar levels is:

Which hormone is released in response to stress or danger, preparing the body for "fight or flight"?

Deficiency of iodine in the diet can lead to a condition called:

The hormone responsible for regulating the basal metabolic rate in the body is:

Which gland is known as the "master gland" because it controls the activity of other endocrine glands?

Sensory information from the body reaches the brain through the:

The spinal cord originates from the:

Which of these is NOT a part of the hindbrain?

The fluid that protects the brain from mechanical shocks is:

The brain is protected by a bony box called the:

The hunger and thirst centers in the brain are located in the:

Which part of the brain controls voluntary movements?

Involuntary actions like salivation, vomiting, and blood pressure are controlled by the:

Which part of the brain is responsible for maintaining posture and balance of the body?

The main thinking part of the human brain is the:

Which of the following is an example of a reflex action?

The quick, spontaneous, and involuntary response to a stimulus is called a:

Which part of the central nervous system controls reflex actions?

The components of a reflex arc include all of the following EXCEPT:

A reflex action is an example of:

Chemicals that transmit nerve impulses across a synapse are called:

The pathway of a nerve impulse in a neuron is generally:

Which part of the neuron receives information?

The junction between two neurons is called a:

Which of the following is the structural and functional unit of the nervous system?

What is the difference between the manner in which movement takes place in a sensitive plant and the movement in our legs?

Compare and contrast nervous and hormonal mechanisms for control and coordination in animals.

How are involuntary actions and reflex actions different from each other?

What is the need for a system of control and coordination in an organism?

How does chemical coordination occur in plants?

Which signals will get disrupted in case of a spinal cord injury?

How does phototropism occur in plants?

What is the function of receptors in our body? Think of situations where receptors do not work properly. What problems are likely to arise?

The brain is responsible for (a) thinking. (b) regulating the heart beat. (c) balancing the body. (d) all of the above.

The gap between two neurons is called a (a) dendrite. (b) synapse. (c) axon. (d) impulse

Which of the following is a plant hormone? (a) Insulin (b) Thyroxin (c) Oestrogen (d) Cytokinin.

Why are some patients of diabetes treated by giving injections of insulin?

How does our body respond when adrenaline is secreted into the blood?

How does chemical coordination take place in animals?

How do auxins promote the growth of a tendril around a support?

Give an example of a plant hormone that promotes growth.

How is the movement of leaves of the sensitive plant different from the movement of a shoot towards light?

What are plant hormones?

What is the role of the brain in reflex action?

How do we detect the smell of an agarbatti (incense stick)?

Which part of the brain maintains posture and equilibrium of the body?

What happens at the synapse between two neurons?

What is the difference between a reflex action and walking?