Draw well labelled diagrams of the following-(a) Neuron (b) Eye(c) Brain (d) Ear.

2 Compare the following-(a) Central neural system and peripheral neural system(b) Resting potential and action potential(c) Choroid and retina. 3 Explain the following processes.(a) Polarisation of the membrane of a nerve fibre.(b) Depolarisation of the membrane of a nerve fibre.(c) Conduction of a nerve impulse along a nerve fibre.(d) Transmission of a nerve impulse across a chemical synapse. 5 Write short notes on the following:(a) Neural Coordination(b) Forebrain(c) Midbrain(d) Hindbrain(e) Retina(f) Ear Ossicles(g) Cochlea(h) Organ of Corti(i) Synapse. 6 Give a brief account of  (a) Mechanism of synaptic transmission(b) Mechanism of vision(c) Mechanism of Hearing