Arrange the following based upon the mechanism of vision ?
(a) Absorption of visible wavelength of hight by rods and cones
(b) Change in the permeability - of photoreceptors cells
(c ) Dissociation of retinal form opsin
(d) Generation of action potential in the ganglionic cell

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.

The steps involved in the mechanism of vision are given below. Arrange them in proper sequence and select the correct option. A. Dissociation of retinal from opsin and generation of potential difference in photoreceptor cells. B. Focusing of the light rays in visible wavelength on the corner through the lens. C. Generation of the action potential in ganglion cells through bipolar cells. D. Analysis of neural impulse and formation of aa image on the retina. E. Transmission of the action potential by the optic nerve to the visual cortex.

The steps involved in the mechanism of vision are given below. Arrange them in proper sequence and select the correct option. A. Dissociation of retinal from opsin and generation of potential difference in photoreceptor cells. B. Focusing of the light rays in visible wavelength on the corner through the lens. C. Generation of the action potential in ganglion cells through bipolar cells. D. Analysis of neural impulse and formation of aa image on the retina. E. Transmission of the action potential by the optic nerve to the visual cortex.

Mechanism of vision includes following steps in random order A. Generates action potential in ganglionic cells through the bipolar cells. B. Membrane permeabilities of rods and cones change. C. Light induces dissociation of retinal from opsin. D. Activation of photopigment of rods and cones. E. Light rays focussed on the retina. F. Potential differences generated in photoreceptor cells. G. Image formed on retina is recognized by the brain. H. Action potentials are transmitted by optic nerve to the visual cortex of brain. The correct sequence is

Which of the following statements is/are true A. The apoplastic movement of water occurs exclusively through the cell wall without crossing any membranes B. Solutes present in a cell ( or in any solution ) increase the free energy of water or water potential C. The symplastic movement occurs from cell to cell through the plasmodesmata D. Membrane permeability depends on the membrane composition, as well as the chemical nature of the solute

Arrange the following in descending order (a) Number of bivalents formed during meiosis of a spore mother of Ophioglossum (b) Number of chromatids seen on equator at metaphase I in pollen mother cell of Haplopappus gracilis during meiosis (c ) Number of chromosomes found at one pole after anaphase II during meiosis in butterfly (d) Total number of chromosomes found in all daughter cells formed during meiosis from one megaspore mother cell in Potato

Arrange the following in descending order (a) Number of bivalents formed during meiosis of a spore mother of Ophioglossum (b) Number of chromatids seen on equator at metaphase I in pollen mother cell of Haplopappus gracilis during meiosis (c ) Number of chromosomes found at one pole after anaphase II during meiosis in butterfly (d) Total number of chromosomes found in all daughter cells formed during meiosis from one megaspore mother cell in Potato

A list of steps involved in mechanism of vision is given below in a random order. (i)Neural impulses are analysed and image formed on retina is recognised by visual cortex. (ii)Membrane permeability changes (iii)Ganglion cells are excited (iv)Bipolar cells are depolarised (v)Action potentials (impulse) are transmitted by optic nerves to visual cortex. (vi)Potential differences are generated in the photoreceptor cells. (vii)Light energy causes a change in shape of rhodopsin, leading to the dissociation of retina (an aldehyde of vitamin A ) from opsin (a protein) (viii)Structure of opsin is changed. Which of the following options represents these events in a correct order ?