InterviewSolution
Saved Bookmarks
InterviewSolution
| 1. |
When two plants L and M were exposed to different light intensities and temperature they showed changes in their rates of photosynthesis. Which have been represented in the following graph. The graph indicates thatA. Plant L is a `C_(3)` plant for which the light saturation point is 100% of full sunlightB. Plant M is a `C_(4)` plant for which the optimum temperature s around `20^(@)C`C. Plant M is a `C_(3)` plant which is more affected at higher temperature and higher light intensity as compared to palnt LD. plant L is a `C_(4)` plant and cannot function at light intensities above the saturation point. |
|
Answer» Correct Answer - C The light intensity at which a plant can achive maximum rate of photosynthesis is called as light saturation point. Its value is 50-70% full sunlight in `C_(3)` sun plants and upto 200% of full sunlight in `C_(4)` sun plants (e.g., sugarcane). Beyond satruation point (it is seldom relaised in nature in `C_(4)` sun plants). the rate of photosynthesis begins to decline. Optimum temperature at which the rate of photsynthesis is maximum is `10^(@)C-25^(@)C` for `C_(3)` plants and `30-45^(@)C` for `C_(4)` plants. Thus, it is clear that in the given graph, plant L is a `C_(4)` plant and plant M is a `C_(3)` plant. |
|