Differentiate between: (Any four)
$(a)$ Myelinated and non-myelinated axons
$(b)$ Dendrites and axons
$(c)$ Rods and cones
$(d)$ Thalamus and Hypothalamus
$(e)$ Cerebrum and Cerebellum

Melanin and Lewy bodies occur in the neurons in case of

Neurosis is characterised by

Complete the statement by selecting the appropriate match among the following.

Column-$I$	Column-$II$
$(a)$ Resting potential	$(i)$ Chemicals involved in the transmission of impulses at synapses.
$(b)$ Nerve impulse	$(ii)$ Gap between the presynaptic and postsynaptic neurons.
$(c)$ Synaptic cleft	$(iii)$ Electrical potential difference across the resting neural membrane.
$(d)$ Neurotransmitters	$(iv)$ An electrical wave-like response of a neuron to a stimulation.

Read the following statements:
$(A)$ The neural system provides an organized network for point-to-point connections.
$(B)$ The endocrine system provides chemical integration through hormones.
$(C)$ The neural system is very simple in lower invertebrates.
$(D)$ Neurons can detect and receive stimuli but cannot conduct them.
How many of the above statements are incorrect?

Give a brief account of
$(a)$ Mechanism of synaptic transmission
$(b)$ Mechanism of vision
$(c)$ Mechanism of hearing