In photosynthetic organisms, the Emerson enhancement effect is observed when:

The membrane of thylakoid is called

I. Water is oxidised in PS-I not in PS-II II. Light is needed for both PS-I and PS-II III. Due to photolysis of water, formation of ATP and NADPH occurs IV. Production of NADPH and $H^+$ is associated with PS-II not PS-I Identify the true statement and select the correct option

Substance which is essential for the respiration as well as photosynthesis is

In $C_4$ plants, the high concentration of $CO_2$ in the bundle sheath cells primarily serves to:

Which of the following is NOT directly involved in the light-dependent reactions of photosynthesis?

Chemiosmosis hypothesis given by Peter Mitchell proposes the mechanism of

${C_4}$ plants among the following are

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 spatial separation of initial $CO_2$ fixation and the Calvin cycle in $C_4$ plants is primarily achieved by the compartmentalization of:

The ATP production in photosynthesis is called