Chapter Exam

Unit 3B: Neural Control and Coordination — Online MCQ Test

Q: Which part of the human nervous system controls voluntary actions and connects the central nervous system to the rest of the body?

Answer: D. Somatic nervous system — The somatic nervous system is responsible for voluntary actions and carries motor commands from the CNS to skeletal muscles.

Q: The functional unit of the nervous system is the:

Answer: B. Neuron — A neuron is the structural and functional unit of the nervous system and is specialized for impulse conduction.

Q: In the human eye, the image of an object is formed on the retina because the lens is:

Answer: A. Convex and capable of changing its focal length — The eye lens is convex and changes its curvature during accommodation to focus images on the retina.

ZOOLOGY · CLASS 12 INTERMEDIATE 2 YEAR · Telangana State Board

Practice Unit 3B: Neural Control and Coordination with a free chapter-wise online MCQ test for Telangana State Board CLASS 12 INTERMEDIATE 2 YEAR ZOOLOGY. This chapter covers: This chapter covers central peripheral nervous systems neuron impulse generation synaptic transmission brain anatomy reflex actions and sensory organs eye and ear.. AI-generated questions from basic to board-exam level, with instant results and explanations.

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Unit 3B: Neural Control and Coordination — Important Questions & Answers (FAQ)

Frequently asked questions from Telangana State Board CLASS 12 INTERMEDIATE 2 YEAR ZOOLOGY — Unit 3B: Neural Control and Coordination, with answers and explanations. These are sample questions; the exam has its own separate question set.

Which part of the human nervous system controls voluntary actions and connects the central nervous system to the rest of the body?

A. Peripheral nervous system
B. Autonomic nervous system
C. Central nervous system
D. Somatic nervous system ✓

Answer: D. Somatic nervous system
The somatic nervous system is responsible for voluntary actions and carries motor commands from the CNS to skeletal muscles.

The functional unit of the nervous system is the:

A. Dendrite
B. Neuron ✓
C. Axon terminal
D. Synapse

Answer: B. Neuron
A neuron is the structural and functional unit of the nervous system and is specialized for impulse conduction.

Which statement about a nerve impulse is correct?

A. It is always carried only by dendrites
B. It is an electrochemical signal transmitted along a neuron ✓
C. It occurs only inside the brain
D. It is produced only in sensory organs

Answer: B. It is an electrochemical signal transmitted along a neuron
A nerve impulse is an electrochemical change that travels along the neuron membrane.

The ossicles of the middle ear are responsible for:

A. Producing sound waves
B. Amplifying vibrations and transmitting them to the inner ear ✓
C. Detecting sound pressure directly
D. Maintaining balance only

Answer: B. Amplifying vibrations and transmitting them to the inner ear
The malleus, incus, and stapes amplify sound vibrations and pass them to the cochlea through the oval window.

In the human eye, the image of an object is formed on the retina because the lens is:

A. Convex and capable of changing its focal length ✓
B. Flat and fixed in shape
C. Concave and immobile
D. Transparent but not refractive

Answer: A. Convex and capable of changing its focal length
The eye lens is convex and changes its curvature during accommodation to focus images on the retina.

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