AP BIOLOGY

PHOTOSYNTHESIS

LIGHT DEPENDENT REACTIONS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of these conditions would decrease the rate of photosynthesis in a plant?
A
Above average precipitation
B
Changing the daylight hours from 14 hrs to 10 hrs
C
Changing the CO2 concentration from 380 ppm to 410 ppm
D
All of these choices
Explanation: 

Detailed explanation-1: -Photosynthesis can be influenced by several factors some of these factors are light intensity, temperature, water supply, and the concentration of carbon dioxide. If the temperature and light intensity is too high or low, there is an immediate decline in the rate of photosynthesis.

Detailed explanation-2: -There are several limiting factors which can reduce the rate of photosynthesis, eg temperature, light intensity and carbon dioxide concentration.

Detailed explanation-3: -At low light intensities, above the light compensation point (LCP), photosynthetic rate increases proportionally to the light intensity and reaches a maximum. However, as light intensity is increased further, chlorophyll can get damaged and as a result the rate of photosynthesis decreases.

Detailed explanation-4: -With too little light, photosynthesis cannot occur either and the plant suffers without the production of sugars.

There is 1 question to complete.