Class 10 Practice - Level 3 - Control And Coordination - Set 1

Total questions: 15

Which neurotransmitter is primarily involved in the regulation of mood, appetite, and sleep?

Topic: Nervous System

Dopamine

Serotonin

Acetylcholine

GABA

None

What is the role of interneurons in the spinal cord during a reflex action?

Topic: Reflex Action

They directly stimulate the effector

They connect sensory neurons to motor neurons

They transmit signals to the brain

They receive sensory input from the environment

None

Which condition is caused by the hypersecretion of growth hormone in adults?

Topic: Endocrine System

Dwarfism

Acromegaly

Cretinism

Gigantism

None

How do glucocorticoids affect the immune system?

Topic: Hormones

They stimulate immune responses

They suppress immune responses

They have no effect on the immune system

They destroy immune cells

None

Which hormone can delay fruit ripening and is used commercially to prolong the shelf life of fruits?

Topic: Plant Hormones

Auxin

Cytokinin

Gibberellin

Ethylene

None

How do plants detect changes in their environment to initiate tropic movements?

Topic: Coordination in Plants

Through chemical signals only

Through electrical signals only

Through a combination of chemical and electrical signals

Through mechanical signals only

None

What is the role of Schwann cells in the peripheral nervous system?

Topic: Human Nervous System

Transmit nerve impulses

Produce myelin sheath around axons

Relay sensory information

Connect neurons to blood vessels

None

What distinguishes multipolar neurons from other types of neurons?

Topic: Types of Neurons

They have a single axon and multiple dendrites

They have two axons and one dendrite

They have no axon

They have a single dendrite and multiple axons

None

Which brain structure is primarily responsible for the formation and retrieval of long-term memories?

Topic: Brain Parts

Thalamus

Hypothalamus

Hippocampus

Amygdala

None

10.

How does the reflex arc bypass the brain to produce a quick response?

Topic: Reflex Arc

By sending signals directly to the muscles

By using interneurons in the spinal cord

By transmitting impulses through the autonomic nervous system

By inhibiting sensory neuron activity

None

11.

What is the effect of gibberellins on dwarf plants?

Topic: Plant Growth

Inhibit growth

Promote elongation of stems

Delay flowering

Increase leaf size

None

12.

How does the negative feedback mechanism regulate hormone levels in the body?

Topic: Hormones in Animals

By increasing hormone production when levels are high

By decreasing hormone production when levels are low

By maintaining constant hormone levels regardless of need

By adjusting hormone production based on the body's needs

None

13.

What is the role of the autonomic nervous system in the body?

Topic: Nervous Coordination

Control voluntary muscle movements

Transmit sensory information to the brain

Regulate involuntary functions such as heart rate and digestion

Process visual and auditory information

None

14.

How does the myelin sheath affect the speed of nerve impulse transmission?

Topic: Structure of Neuron

Slows down the impulse

Speeds up the impulse

Has no effect on the impulse speed

Changes the direction of the impulse

None

15.

Which part of the brain is involved in the regulation of circadian rhythms?

Topic: Human Brain

Cerebrum

Cerebellum

Hypothalamus

Brainstem

None

1 out of 15

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Class 10 Practice - Level 3 - Control And Coordination - Set 1

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