Question

Select Matching Pair from factors affecting phtosynthesis.

• A. Temperature- affect C3 and C4 plant both.
• B. Water- Amount increases water potential decreases
• C. Red Light- rate of photosynthesis is reduced.
• D. Visible spectrum of light- 400 nm to 700 nm

Answer 1

The correct option is B Water- Amount increases water potential decreases

Plants use water potential to transport water to the leaves so that photosynthesis can take place. Water potential is a measure of the potential energy in water as well as the difference between the potential in a given water sample and pure water. Solute potential (Ψs) decreases with increasing solute concentration; a decrease in Ψs causes a decrease in the total water potential. Therefore, with an increase in the amount of water, the water potential decreases.

So, the correct option is 'Water- Amount increases water potential decreases'