Control and Coordination

Which type of coordination occurs through hormones?

1. Nervous coordination
2. Chemical coordination
3. Mechanical coordination
4. Muscular coordination

Which gland is known as the master gland of the body?

1. Thyroid gland
2. Pituitary gland
3. Pancreas
4. Adrenal gland

The bending of roots towards gravity is called:

1. Phototropism
2. Geotropism
3. Hydrotropism
4. Thigmotropism

Which part of the human brain controls involuntary actions?

1. Cerebrum
2. Cerebellum
3. Medulla oblongata
4. Spinal cord

Which plant hormone inhibits growth?

1. Auxin
2. Cytokinin
3. Abscisic acid
4. Gibberellin

Which system controls coordination in animals?

1. Digestive system
2. Nervous system
3. Respiratory system
4. Excretory system

Which chemical substance is released at the synapse?

1. Hormone
2. Neurotransmitter
3. Enzyme
4. Antibody

Which gland produces the hormone thyroxine?

1. Pancreas
2. Thyroid gland
3. Adrenal gland
4. Pituitary gland

Which part of a neuron receives information?

1. Axon
2. Cell body
3. Dendrites
4. Synapse

The movement of a plant shoot towards light is called:

1. Geotropism
2. Hydrotropism
3. Phototropism
4. Chemotropism

Which hormone controls the blood sugar level in humans?

1. Thyroxine
2. Insulin
3. Adrenaline
4. Growth hormone

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

1. Cerebrum
2. Cerebellum
3. Medulla
4. Hypothalamus

Which hormone is responsible for the growth of plants?

1. Auxin
2. Cytokinin
3. Gibberellin
4. Abscisic acid

Which part of the nervous system controls reflex actions?

1. Brain
2. Spinal cord
3. Cerebrum
4. Cerebellum

How does a reflex arc help protect the body?

1. By delaying responses until the brain analyzes the situation
2. By producing hormones immediately
3. By providing a rapid response through the spinal cord without waiting for brain processing
4. By stopping nerve impulses

Why is hormonal coordination generally slower than nervous coordination?

1. Hormones do not travel through the body
2. Hormones are transported through blood to target organs
3. Nerves use blood vessels for communication
4. Hormones remain only in glands

Which hormone prepares the body for emergency situations?

1. Insulin
2. Adrenaline
3. Thyroxine
4. Growth hormone

Which plant hormone promotes growth in shoots?

1. Auxin
2. Abscisic acid
3. Ethylene
4. Cytokinin

Which gland is often called the "master gland" of the endocrine system?

1. Thyroid gland
2. Adrenal gland
3. Pituitary gland
4. Pancreas

Which hormone regulates blood sugar levels in the body?

1. Thyroxine
2. Adrenaline
3. Insulin
4. Estrogen

What is a reflex action?

1. A voluntary action performed consciously
2. A quick, automatic response to a stimulus
3. A slow response controlled by hormones
4. A process of digestion

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

1. Cerebrum
2. Cerebellum
3. Medulla
4. Hypothalamus

What is the basic structural and functional unit of the nervous system?

1. Neuron
2. Nephron
3. Alveolus
4. Villus

Which system controls and coordinates activities in the human body?

1. Digestive System
2. Nervous System
3. Respiratory System
4. Excretory System