Photosynthesis logoSubject: Biology    Exam: AIIMS

Chapter Rating: Do or Die (Most Important)

Topic Weightage: 0.05

Practice QuestionsRevise Chapter

Start a discussion on this chapter

Posting your doubt

Post Discussion

My Chapter Prep Status

Chapter Completion: 0%

Your GEM Score: 0

Check your Good Enough Meter (GEM)

Chapter Expert Trophy

Bhavya Bhadauri...

How can you win?
You need to score more than 1907 marks to beat Bhavya Bhadauria

Others In The Race!
Dhanashree Hatolkar, RAJIV RANJAN, manisha

Important Points

Energy absorbed is transmissible between pigments by resonance transfer, following the rule that such a transmission/passage would always by from a pigment with shorter absorption maximum (or lambda) to a pigment with longer lambda. Thus every photosystem (or pigment system) has only pigment molecule with longest maximum (like Chl a 700/P700 in PS I and Chl a 680/P680 in PS II) action as photoreaction center that exits as electron when sufficiently stimulated due to energy transfer by the neighbouring molecules of secondary/ accessory Pigments in an assembly of 300 molecules comprising each photosystem.

Low velocity of Calvin cycle is mostly because of the efficiency of RuBP - carboxylase (or Rubisco).
Under monochromatic illumination, photosynthesis is best in red light. In natural conditions however best photosynthesis would be under appropriately intense sunlight.
Sign Up to Study Photosynthesis