Photochemical phase does not include-
1. water splitting
2. oxygen release
3. CO₂ assimilation
4. light absorption

Which of the following statement is incorrect?
1. Reaction centre is formed by a group of chl- a molecules.
2. Reaction centre is different in both the photosystems.
3. In PS I the reaction centre chlorophyll a has an absorption peak at 700 nm.
4. In PS II the reaction centre chlorophyll a has absorption maxima at 680 nm.

In photosystem-I, P700 refers to-
1. chl-b
2. chl-a
3. number of pigment molecules
4. absorption peak of chl-a at 700nm

Light harvesting complexes are made up of-
1. proteins
2. pigments
3. protein and pigments
4. proteins and lipids.

In chloroplast the movement of electrons from PS-II to electron transport system is-
1. uphill in terms of redox potential scale.
2. downhill in terms of redox potential scale.
3. from one cytochrome to another
4. None of the above.

Electrons in the reaction center of PS-I are excited by-
1. blue light
2. red light
3. green light
4. blue and red light

Non- cyclic photophosphorylation involves –
1. PS-I
2. PS-II
3. PS-I and PS-II
4. PS-I and LHC

Where does cyclic photo-phosphorylation takes place?
1. membranous system of chloroplast
2. stroma lamellae
3. grana
4. stroma

Which of the following is present in membrane of stroma lamellae?
1. NADP reductase
2. PS-I
3. PS-II
4. water splitting complex.

If only light of wavelength beyond 680 nm is available then which process will remain continue?
1. cyclic photo-phosphorylation
2. non-cyclic photo-phosphorylation
3. ATP and NADPH
4. evolution of oxygen