First reaction in photosynthesis is
A. Photolysis of water
B. Excitation of chlorophyll molecules
C. Formation of ATP
D. Fixation of CO2
Answer: Option B
Solution(By Examveda Team)
The first reaction in photosynthesis is the Excitation of chlorophyll molecules.When energy from light is absorbed by proteins called reaction centers that contain green chlorophyll (and other colored) pigments/chromophores. In plants, these proteins are held inside organelles called chloroplasts. In these light-dependent reactions, some energy is used to strip electrons from suitable substances, such as water, producing oxygen gas.
Related Questions on Plant Pathology
Which photosynthetic bacteria possess both PS I and PS II?
A. Purple sulphur bacteria
B. Cyanobacteria
C. Purple nonsulphur bacteria
D. Green sulphur bacteria
Join The Discussion