Indicate whether each statement is true or false. 1. Rod cells are depolarized in the dark. (Click to select) 2. Glutamate binds to receptors on bipolar cells and causes them to depolarize. (Click to select) 3. Light and dark adaptation are accomplished by changes in the amount of available iodopsin. (Click to select) 4. When light reactions occur, retinal is completely released from opsin. (Click to select)

Rod cells are photo-receptors that present in the retina. They hyper-polarized  in the dark due to sodium ions efflux. Statement 1, 2, and 4 are correct while statement 3 is incorrect

1) Rod cells are photo-receptors that present in the retina. They hyper-polarized  in the dark due to sodium ions efflux.

2) Depolarization of the bipolar cell of the retina is caused by glutamate released from rod and cone cells.

3) The changes according to the light is known as a light and dark adaptation which is accomplished by the change in oidopsin.

4) In the light reaction takes place retinal converted to opsin,

Therefore, Statement 1, 2, and 4 are correct while statement 3 is incorrect.

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The correct answer is - 1. true, 2. true, 3. false, and 4. true.

Explanation:

1. Rod cells are the photoreceptors present in the retina that are hyperpolarized not depolarized in dark due to sodium ions efflux.

2. Depolarisation of the bipolar cell of the retina by glutamate release by rods and cones.

3. The adaption according to the light is known as a light adaptation which takes place due to a large part of photochemical in both rods and cones which is reduced to retinal and opsins.

4. when the light reaction takes place retinal converted to opsin

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