OBJECTIVE LIFE SCIENCE
PLANT PHYSIOLOGY
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
the amount of fertilizer in the water
|
|
|
the amount of oxygen in the atmostphere
|
|
|
the light intensity, gtemperature, and concentration of carbon dioxide
|
|
|
the amount of respiration carried on durring the daylight hours
|
Detailed explanation-1: -Light Intensity: Higher light intensity results in a higher rate of photosynthesis. Whereas, low light intensity results in a lower rate of photosynthesis. The concentration of $CO 2$: Higher concentration of carbon dioxide helps in increasing the rate of photosynthesis.
Detailed explanation-2: -As light intensity increases – until a point – the amount of sugars increases and thus, more energy is available for plant growth and maintenance. However, the concentration of CO2 and temperature also influ-ence photosynthesis in a poten-tially dramatic way.
Detailed explanation-3: -As the light intensity increases the rate of photosynthesis follows (point B on the graph). This means more carbon dioxide is being absorbed by the plant for photosynthesis. So this means more carbon dioxide uptake occurs. The graph shows this increase in carbon dioxide uptake.