DENDROLOGY

TREE PHYSIOLOGY

PHOTOSYNTHESIS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which factor affects photosynthesis the most?
A
light
B
water
C
carbon dioxide
D
oxygen
Explanation: 

Detailed explanation-1: -Carbon dioxide – with water – is one of the reactants in photosynthesis. If the concentration of carbon dioxide is increased, the rate of photosynthesis will therefore increase.

Detailed explanation-2: -The main factors affecting rate of photosynthesis are light intensity, carbon dioxide concentration and temperature.

Detailed explanation-3: -Elevated [CO2] causes increased photosynthesis in plants, which leads to greater production of carbohydrates and biomass.

Detailed explanation-4: -A higher concentration of carbon dioxide (CO2) in our atmosphere aids photosynthesis, thus contributing to increased plant growth. CO2 is essential for photosynthesis. By increasing the level of CO2, photosynthesis increases, but only if there is no other limiting factor.

Detailed explanation-5: -Carbon dioxide: Increase in CO2 concentration in air leads to an increase in rate of photosynthesis. Water: Less water in the soil reduces the rate of photosynthesis. Sunlight: If the intensity of the sunlight increases, rate of photosynthesis also increases. More items

There is 1 question to complete.