What is the primary role of chlorophyll in the light-dependent reactions?

I. The electrons that carriers photophosphorylation are located in the thylakoid membrane

II. During photophosphorylation, the chloroplast stroma becomes more acidic than the interior of thylakoid membrane

III. Protons diffuses through the protein channels which are ATP synthetase molecules

IV. ATP is formed from ADP + Pi on the stroma side of the thylakoid in the chloroplast

V. During photophosphorylation, water ionises to form ${H^ + }$, yielding electrons to PS-II

Which of the following statement are false?

The Emerson enhancement effect and the Red drop phenomenon were crucial in uncovering the existence of:

Which of the following elements are essential for the photolysis of water?

In photo system-I, the first electron acceptor is

Chemiosmosis requires

I. a membrane

II. a proton pump

III. a proton gradient

Select the correct option

I. Cyclic photophosphorylation needs PS-I and PS-II

II. Cyclic photophosphorylation produced NADPH + H^+ and ATP

III. Cyclic photophosphorylation involves ${H_2}O$

IV. Electrons are recycled in cyclic photophosphorylation

Identify the correct and incorrect statement and select the option accordingly

Which form of phytochrome is physiologically active?

In photosystem II, the reaction centre chlorophyll-a absorbs …A… nm wave length of red light causing electrone to become excited and jump into an orbit farther from the atomic nucleus. These electrons are picked up by an …B…, which passes them to an electron transport system constisting of …C… Pick the right choice for A, B and C

The components of PS-I are located on the

If a $C_4$ plant's bundle sheath cells were damaged, which process would be most directly affected?