The oxygen evolved during photosynthesis comes from water molecules. Which one of the following pairs of elements involved in this reaction?

1. Manganese and chlorine

2. Manganese and potassium

3. Magnesium and molybdenum

4. Magnesium and chlorine

Subtopic:  Light Reaction: Electron Transport |
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In photosynthesis, the light-independent reactions take place at

1. Thylakoid lumen

2. photosystem I

3. photosystem II

4. Stromal matrix

Subtopic:  Dark Reaction: Biosynthetic Phase |
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The structures that are formed by stacking of organised flattened membranous sack in the chloroplasts are
1. cristae
2. grana
3. stroma lamellae
4. stroma

 

Subtopic:  Chloroplast Structure |
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Anoxygenic photosynthesis is characteristic of:

1. Rhodospirillum

2. Spirogyra

3. Chlamydomonas

4. Ulva

Subtopic:  Introduction | Historical View: Experiments |
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A process that makes an important difference between C3 and C4 plants is

1. Transpiration

2. glycolysis

3. Photosynthesis

4. Photorespiration

Subtopic:  Photorespiration |
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The correct sequence of cell organelles during photorespiration is

1. chloroplast-Golgi bodies-mitochondria

2. chloroplast-rough endoplasmic reticulum-dictyosomes

3. chloroplast-mitochondria-peroxisome

4. chloroplast-vacuole-peroxisome

Subtopic:  Photorespiration |
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CAM helps the plants in

1.  secondary growth

2.  disease resistance

3.  reproduction

4.  conserving water

Subtopic:  CAM Pathway |
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In Kranz anatomy, the bundle sheath cells have :
1. thick walls, many intercellular spaces and
few chloroplasts
2. thin walls, many intercellular spaces and no
chloroplasts
3. thick walls, no intercellular spaces and
large number of chloroplasts
4. thin walls, no intercellular spaces and
several chloroplasts

Subtopic:  C4 Cycle (Hatch & Slack Pathway) |
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PGA as the first CO2 fixation product was discovered in photosynthesis of –
(1) Bryophyte
(2) Gymnosperm
(3) Angiosperm
(4) Algae

Subtopic:  Dark Reaction: Biosynthetic Phase |
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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

Subtopic:  C4 Cycle (Hatch & Slack Pathway) |
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