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Q. No.Identify the option where the name of the scientist is not correctly matched with discovery related to understanding of the process of photosynthesis:
| 1. | Cornelius van Neil | Oxygen evolved comes from water |
| 2. | T W Engelmann |
First absorption spectrum of chlorophyll a |
| 3. | Joseph Priestley | Plants restore to the air whatever breathing animals remove |
| 4. | Jan Ingenhousz | Sunlight is essential for photosynthesis |
Subtopic: Â Historical View: Experiments |
Level 3: 35%-60%
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Who discovered that plants in the presence of light produce a gas that supports combustion, which is part of the process of photosynthesis?
1. Jan Ingenhousz
2. Joseph Priestley
3. Melvin Calvin
4. Robin Hill
1. Jan Ingenhousz
2. Joseph Priestley
3. Melvin Calvin
4. Robin Hill
Subtopic: Â Historical View: Experiments |
 52%
Level 3: 35%-60%
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In the experiment conducted by T.W. Engelmann aerobic bacteria were used.
| 1. | To determine the action spectrum |
| 2. | To determine the absorption spectrum of chlorophyll. |
| 3. | To detect the sites of oxygen (O2) evolution. |
| 4. | To detect the oxidizing species in the photosynthetic reactants. |
Subtopic: Â Historical View: Experiments |
 52%
Level 3: 35%-60%
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Identify the correct statements:
| I: | Only green plants can prepare their own food. |
| II: | In green plants, all cells, tissues and organs photosynthesise. |
| 1. | Only I |
| 2. | Only II |
| 3. | Both I and II |
| 4. | Neither I nor II |
Subtopic: Â Introduction |Â Historical View: Experiments |Â Pigments |
Level 3: 35%-60%
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Q. No.
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