Question

Match the column-I with the column-II and select the correct option

	Column -I		Column-II
A.	Unipolar neuron	I.	In cerebral cortex
B.	Bipolar neuron	II.	In embryonic stage
C.	Multipolar neuron	III.	In retina of eye

A. A-I; B-II; C-III
B. A-I; B- III; C- II
C. A- II; B- I; C- III
D. A-II; B- III; C- I

Answer 1

Hint: Neurons are the microscopic structures that conduct the nerve impulses around the nervous system. These neurons take up the electrical impulses from the different organs and axons transmit these impulses away from the cell body to the synapse ( space between two adjacent neurons) or a neuromuscular junction.

Complete Step by Step Answer:
On the structural basis (number of axons and dendrites), the neurons are classified into three types: unipolar, multipolar and bipolar.

Unipolar neurons:- Those neurons which have only a single neuron for the transmission of electrical impulse are unipolar neurons. The axons are myelinated which results in the fast conductions of signals.
These neurons are present in the embryonic stage.

Bipolar neurons:- Those neurons which have one dendrite and one axon are termed as bipolar neurons. These neurons are present in the retina of the eye and receive light and then send signals to the brain for processing.

Multipolar neurons:- Those neurons which have one axon but multiple dendrites and receive signals from various neurons are called multipolar neurons. These types of neurons are present in the cerebral cortex.

Thus, the correct option is D:- A-II; B- III; C-I



Note: Neurons are classified into sensory and motor on the basis of the function they perform. Sensory neurons carry the signals from the sensory organs to the brain which helps us in touch, taste, smell and see. Motor neurons are the neurons that carry the signals from the grain to the muscle or a gland and help us in moving and functioning.