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 fixation product, was discovered in photosynthesis of
1. bryophyte
2. gymnosperm
3. angiosperm
4. alga
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-plants are photosynthetically more efficient than -plants because
1. compensation point is more.
2. generated during photorespiration is trapped and recycled through PEP carboxylase.
3. efflux is not prevented.
4. they have more chloroplasts.
In the leaves of -plants, malic acid synthesis during 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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