The photorespiratory carbon-oxidation cycle involves the interaction of
1. chloroplast
2. mitochordria
3. peroxisomes
4. all of these.
Photorespiration in C3 plants starts from:
(1) phosphoglycerate
(2) phosphoglycolate
(3) Glycerate
(4) glycine.
Hill reaction occurs in:
1. high altitude plants
2. total darkness
3. absence of water
4. presence of ferricyanide
Which one of the following categories of organisms do not evolve oxygen during photosynthesis?
| 1. | Red algae |
| 2. | Photosynthetic bacteria |
| 3. | C4 plants with Kranz anatomy |
| 4. | Blue green algae |
Which of the following is the characteristic of PS-I?
| 1. | It is activate only upto 680 nm of light. |
| 2. | The reaction centre of PS-I is P680 . |
| 3. | PS-I is reduced by the electrons released in photolysis of water. |
| 4. | PS-I is involved in non-cyclic photophosphorylation. |
Cyclic photophosphorylation invloves
| 1. | PS I | 2. | PS II |
| 3. | PS I and PS II | 4. | P680 |
The first stable product of Calvin cycle is
| 1. | 3-phosphoglycerate |
| 2. | 1, 3 biphosphoglycerate |
| 3. | glyceraldehyde - 3 phosphate |
| 4. | ribulose - 5- phosphate |
PS-II occurs only in
| 1. | stroma |
| 2. | granal thylakoids |
| 3. | stromal lamella |
| 4. | matrix |
Which of the following statements is correct?
| 1. | Photorespiration is useful process. |
| 2. | C4 plants are more efficient than C3 plants. |
| 3. | C4 plants are less efficient than C3 plants. |
| 4. | Photorespiration is absent in C3 plants but present in C4 plants. |
Photorespiration shows formation of
| 1. | sugar but not ATP |
| 2. | ATP but not sugar |
| 3. | both ATP and sugar |
| 4. | neither ATP nor sugar |