Q. No.
In photosynthesis, the light-independent reactions take place at
1. thylakoid lumen
2. photosystem l
3. photosystem ll
4. stromal matrix
Anoxygenic photosynthesis is characteristic of
1. Rhodospirillum
2. Spirogyra
3. Chlamydomonas
4. Ulva
The correct sequence of cell organelles during photorespiration is
(1) chloroplast-Golgi bodies-mitochondria
(2) chloroplast-rough endoplasmic reticulum-dictyosomes
(3) chloroplast-peroxisome-mitochondria
(4) chloroplast-vacuole-peroxisome
PGA as the first CO2 fixation was discovered in the photosynthesis of
| 1. | bryophyte | 2. | gymnosperm |
| 3. | angiosperm | 4. | algae |
C4 -plants are more efficient in photosynthesis than C3 -plants due to
| 1. | higher leaf area |
| 2. | presence of larger number of chloroplasts in the leaf cells. |
| 3. | presence of thin cuticle |
| 4. | lower rate of photorespiration |
The C4 -plants are photosynthetically more efficient than C3 -plants because
| 1. | the CO2 compensation point is more |
| 2. | CO2 generated during photorespiration is trapped and recycled through PEP carboxylase |
| 3. | the CO2 efflux is not prevented |
| 4. | they have more chloroplasts. |
Electrons from excited chlorophyll molecule of photosystem-II are accepted first by
1. cytochrome-b
2. cytochrome-f
3. quinone
4. ferredoxin
In the leaves of C4 -plants malic acid synthesis during CO2 fixation occurs in
(1) epidermal cells
(2) mesophyll cells
(3) bundle sheath
(4) guard cells
The wavelength of light abosorbed by Pr form of phytochrome is :
| 1. | 640 nm | 2. | 680 nm |
| 3. | 720 nm | 4. | 620 nm |
In photosystem-I, the first electron acceptor is :
(1) ferredoxin
(2) cytochrome
(3) plastocyanin
(4) an iron-sulphur protein
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