Question

Emerson's effect and red drop helped in discovery of

Answer 1

As discussed in

Red Drop -

Sharp reduction in rate of photosynthesis when monochromatic light of more than 680 nm wavelength (red region) was used alone.

- wherein

680 \: nm \uparrow - Red drop effect

Emerson Enhancement Effect -

Simultaneous application of light of shorter and longer wavelengths, increases the rate of photosynthesis.

- wherein

680 \downarrow \: + 680nm \uparrow \: - Emersion \: Effect

Emerson's Enhancement effect and Red drop is due to the presence of two photosystems PS I and PS II.

Option 1)

Photophosphorylation and non-cyclic electron transport

Incorrect option

Option 2)

Two photosystems operating simultaneously

Correct option

Option 3)

Photophosphorylation and cyclic electron transport

Incorrect option

Option 4)

Oxidative phosphorylation

Incorrect option

Answer 2

Answer:

two photosystems operating simultaneously. photophosphorylation and cyclic electron transport.