Photosynthesis in Higher Plants Questions and Answers Part-5

1. Which light is absorbed more by Chlorophyll ‘a’?
a) Yellow and green
b) Red and blue
c) Yellow and orange
d) Yellow and red

Answer: b
Explanation: Red and blue light is absorbed more by Chlorophyll ‘a’.

2. Which light shows higher rate of photosynthesis?
a) Yellow and green
b) Red and blue
c) Yellow and orange
d) Yellow and red

Answer: b
Explanation: Red and blue light shows higher rate of photosynthesis.

3. Light reaction and photochemical phase includes
a) Light absorption
b) Water splitting and release of oxygen
c) ATP and NADPH formation
d) All of these

Answer: d
Explanation: All of these

4. Which of the following is incorrect about photosystem?
a) There are two photosystem (PS I and PS II).
b) PS I and PS II are named in sequence of their discovery.
c) LHC is made up of hundred of pigment molecules which are bounded proteins.
d) Each photosystem has all the pigments (Except one molecule of chlorophyll ‘b’).

Answer: d
Explanation: "Each photosystem has all the pigments (Except one molecule of chlorophyll ‘b’)". This is incorrect.

5. Select the correct sequence of electron transfer in Z-scheme of light reaction:
a) e- Acceptor → ETS (made of cytochrome) → PSII → NADP+ → PSI → e- Acceptor
b) PSII → e- Acceptor → ETS (made of cytochrome) → PSI → e- Acceptor → NADP+
c) ETS (made of cytochrome) → PSI → e- Acceptor → PSII → e- Acceptor → NADP+
d) e- Acceptor → PSI → PSII → e- Acceptor → ETS (made of cytochrome) → NADP+

Answer: b
Explanation: PSII → e- Acceptor → ETS (made of cytochrome) → PSI → e- Acceptor → NADP+

6. In Z-scheme, Z-shape is formed when
a) Carriers are placed uphill
b) Carriers are placed downhill
c) Carriers are placed in sequence on a redox potential scale
d) None of the above

Answer: c
Explanation: In Z-scheme, Z-shape is formed when carriers are placed in sequence on a redox potential scale.

7. Where water splitting complex associated with PS II is situated?
a) Inner side of chloroplast outer membrane
b) Inner side of thylakoid membrane
c) Outer side of thylakoid membrane
d) Inner side of chloroplast outer membrane

Answer: b
Explanation: Inner side of thylakoid membrane

8. Where are the protons and \[O_{2}\] formed likely to be released?
a) Lumen of thylakoid
b) Outside of thylakoid membrane
c) In stroma
d) None of theses

Answer: a
Explanation: Lumen of thylakoid

9. Phosphorylation occurs in
a) Mitochondria
b) Chloroplast
c) Cytoplasm
d) All of theses

Answer: b
Explanation: Phosphorylation occurs in chloroplast.

10. Oxidative phosphorylation occurs in
a) Mitochondria
b) Chloroplast
c) Cytoplasm
d) All of theses

Answer: a
Explanation: Oxidative phosphorylation occurs in mitochondria.