| 1 |
How many percent of the light falling on the leaf surface is absorbed: |
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| 2 |
When we work hard we suffer form muscle fatigue muscle cells. |
- A. Carry out aerobic respiration and so accumulate more CO<sub>2</sub>
- B. Carry out anaerobic respiration and so accumulate lactic acid
- C. Carry out aerobic respiration at faster rate and so accumulate lactic acid
- D. Carry out aerobic respiration at faster rate and so are tired
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| 3 |
In which of the following steps of respiration, CO2 is produced? |
- A. Glycolysis
- B. Krebs cycle
- C. Electron trransport
- D. All of these
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| 4 |
When a plant was kept in darkness for many days, many days, its leaves turned yellow. Why? |
- A. Leaves could not get oxygen and so there was no photosynthesis
- B. Leaves could not get light and so there was no respiration
- C. Leaves could not get oxygen and so there was no respiration
- D. Leaves could not get light and so there was no photosynthesis
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| 5 |
The breaking of one phosphate bond releases _________ kcal/mol of ATP. |
- A. 7.9
- B. 7.5
- C. 7.1
- D. 7.3
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| 6 |
..................... Organisms cannot carry out photosynthesis. |
- A. Autotrophic
- B. Heterotrophic
- C. Both
- D. None
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| 7 |
Oxygen takes part in aerobic respiration in: |
- A. Glycolysis
- B. Link step between Glycolysis and krebs cycle
- C. Electron transport chain
- D. Krebs cycle
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| 8 |
Chlorophyll pigment absorbs maximum light in wavelengths of: |
- A. Green and blue
- B. Green and red
- C. Green only
- D. Red and blue
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| 9 |
Form which bonds of ATP molecule, energy is taken? |
- A. P-P bonds
- B. C-H bonds
- C. C-N bonds
- D. C-O bonds
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| 10 |
intensity of light is ........ at midday. |
- A. Maximum
- B. Minimum
- C. Both
- D. None
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