Q. No.In photosynthesis, the light-independent reactions take place at
1. thylakoid lumen
2. photosystem l
3. photosystem ll
4. stromal matrix
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The structures that are formed by stacking of organised flattened membranous sacs in the chloroplasts are
| 1. | cristae | 2. | grana |
| 3. | stroma lamellae | 4. | stroma |
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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 CO2CO2 fixation product, was discovered in photosynthesis of
1. bryophyte
2. gymnosperm
3. angiosperm
4. alga
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C4C4 -plants are photosynthetically more efficient than C3C3 -plants because
| 1. | CO2CO2 compensation point is more. |
| 2. | CO2CO2 generated during photorespiration is trapped and recycled through PEP carboxylase. |
| 3. | CO2CO2 efflux is not prevented. |
| 4. | they have more chloroplasts. |
In the leaves of C4C4 -plants, malic acid synthesis during CO2CO2 fixation occurs in
1. epidermal cells
2. mesophyll cells
3. bundle sheath
4. guard cells
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Carbohydrates are commonly found as starch in plant storage organs. Which of the following five properties of starch (A-E) make it useful as a storage material?
| A. | Easily translocated |
| B. | Chemically non-reactive |
| C. | Easily digested by animals |
| D. | Osmotically inactive |
| E. | Synthesized during photosynthesis |
The useful properties are
| 1. | (B) and (C) |
| 2. | (B) and (D) |
| 3. | (A), (C) and (E) |
| 4. | (A) and (E) |
The first acceptor of electrons from an excited chlorophyll molecule of photosystem II is :
| 1. | cytochrome | 2. | iron-sulphur protein |
| 3. | ferredoxin | 4. | quinone |
In photosystem-I, the first electron acceptor is :
| 1. | ferredoxin | 2. | cytochrome |
| 3. | plastocyanin | 4. | an iron-sulphur protein |
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