Q. No.Photorespiration, usually occurs in
(1) one cell organelle
(2) two cell organelles
(3) three cell organelles
(4) four cell organelles.
Which of the following statements about phytochrome is true?
| 1. | Pr absorbs yellow light and becomes Pfr |
| 2. | Pr absorbs red light and becomes Pfr |
| 3. | Pfr absorbs red light and becomes Pr |
| 4. | Pfr absorbs yellow light and becomes Pr . |
Blackman's law is related to
(1) respiration
(2) transpiration
(3) root pressure
(4) photosynthesis.
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. |
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