Arrange the structures found in the retina from inside to outside. Cone cells, optic nerve, Ganglion cells, Bipolar neuron.

Arrangement of four wall layers in microsporangium from inside to outside is as follows:

Read the features of cell layers in the wall of human intestine. * It consists of circular and longitudinal smooth muscles. *Outer thin layer formed of mesothelium. *A layer formed of loose connective tissue and nerves. *Epithelium with goblet cells to secrete muscus. Identify the cell layers and arrange them from inside to outside as seen in the section of intestine.

Given below are the stages in the generation of optic nerve impulse or action potential on the retina and the role of opsin and retinal in the mechanism of vision. Arrange them in a sequential order. a) Action potential (impulses) are transmitted by the optic nerves to the visual cortex area of the brain. b) Light induces dissociation of retinal from opsin. c) Generates action potential in the ganglion cells through bipolar cells. d) Structural changes in the opsin which induce membrane permeability changes. e) Potential differences are generated in the photoreceptor cells. f) Neural impulses are analyzed by visual cortex area of the brain.

From the statements classify the following into those belonging to Axon and Dendron Longest filament from cell body Covered by myelin sheath No myelin sheath Carries impulses from cell body to outside Carries impulses from dendrites to cell body. Part projecting out from cell body.