- 1(current)
Q. No.Subtopic: Introduction |
95%
Level 1: 80%+
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Hints
Identify the correct equation of photosynthesis amongst the following:
| 1. | \(\small6 \mathrm{CO}_2+12 \mathrm{H}_2 \mathrm{O}+\text { light } \cdots-\mathrm{C}_6 \mathrm{H}_{12} \mathrm{O}_6+6 \mathrm{O}_2+6 \mathrm{H}_2 \mathrm{O}\) |
| 2. | \(\small6 \mathrm{CO}_2+12 \mathrm{NH}_3+\text { light }-\cdots-\mathrm{C}_6 \mathrm{H}_{12} \mathrm{O}_6+6 \mathrm{H}_2 \mathrm{~N}_2+6 \mathrm{H}_2 \mathrm{O}\) |
| 3. | \(\small\mathrm{C}_6 \mathrm{H}_{12} \mathrm{O}_6+6 \mathrm{O}_2+6 \mathrm{H}_2 \mathrm{O}+\text { light }-\cdots-6 \mathrm{CO}_2+12 \mathrm{H}_2 \mathrm{O}\) |
| 4. | \(\small3 \mathrm{CO}_2+6 \mathrm{H}_2 \mathrm{O}+\text { light } \cdots-\mathrm{C}_3 \mathrm{H}_6 \mathrm{O}_3+3 \mathrm{O}_2+3 \mathrm{H}_2 \mathrm{O}\) |
Subtopic: Introduction |
93%
Level 1: 80%+
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Hints
Which of the following statements do not justify the importance of photosynthesis?
| 1. | it is the primary source of all food on earth. |
| 2. | it is responsible for the release of oxygen into the atmosphere. |
| 3. | it is responsible for the water balance on earth. |
| 4. | use of energy from sunlight by plants doing photosynthesis is the basis of life on earth. |
Subtopic: Introduction |
88%
Level 1: 80%+
Hints
Match the Scientists given in Column-I with their contribution in Column-II and select the correct match from the codes given:
Codes
| Column-I | Column-II | ||
| A. | Jan Ingenhousz | P. | Provided evidence for production of glucose when plants grow |
| B. | T. W Engelmann | Q. | Described the first action spectrum for photosynthesis |
| C. | Julius von Sachs | R. | Showed that sunlight is essential for photosynthesis |
| D. | Cornelius van Neil | S. | Inferred that oxygen evolved in photosynthesis comes from water and not from carbon dioxide |
| A | B | C | D | |
| 1. | R | Q | P | S |
| 2. | Q | R | S | P |
| 3. | P | S | R | Q |
| 4. | S | P | Q | R |
Subtopic: Introduction | Historical View: Experiments |
89%
Level 1: 80%+
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Hints
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Van Niel's experiments with purple sulfur bacteria demonstrated that:
| 1. | CO₂ is the primary electron donor in photosynthesis. |
| 2. | Oxygen released in photosynthesis comes from water, not CO₂. |
| 3. | Photosynthesis does not require light in bacteria. |
| 4. | Hydrogen from water directly converts CO₂ into glucose. |
Subtopic: Introduction |
88%
Level 1: 80%+
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Hints
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What are the main components of a photosystem in photosynthesis?
| 1. | Chlorophyll molecules, reaction centre, and light-harvesting complex |
| 2. | ATP synthase, electron carriers, and NADPH |
| 3. | Carbohydrate molecules, thylakoid lumen, and oxygen |
| 4. | Stroma enzymes, plastids, and ribosomes |
Subtopic: Introduction | Photosynthetic Pigments | Pigments | Light Reactions |
90%
Level 1: 80%+
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Hints
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Energy is transferred from the light reaction step to the dark reaction step by
1. chlorophyll
2. ADP
3. ATP
4. RuBP
Subtopic: Introduction | Historical View: Experiments | Chloroplast Structure | Photosynthetic Pigments | Redtrop Experiment | Emerson's Enhancement Experiment | Photosystems | Light Reaction: Electron Transport | Light Reaction: Photophosphorylation | Dark Reaction: Biosynthetic Phase |
83%
Level 1: 80%+
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- 1(current)
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