The diagram shows the famous Engelmann experiment that helped us understand important aspects of the process of photosynthesis. What conclusion can be drawn by the pattern of accumulation of aerobic bacteria shown in the diagram?
 

1.	Excess carbon dioxide is released by the alga in the area of accumulation.
2.	Only red and violet lights are effective for photosynthesis.
3.	In the areas of accumulation, most oxygen was liberated by the alga.
4.	Bacteria are attracted to red and blue light.

The given diagram shows the scheme of:
  

The number of turns of Calvin cycle required to produce one molecule of Glyceraldehyde 3 Phosphate is:

Identify the correct statement regarding the functioning of photosystem II?

The products of non-cyclic photophosphorylation include:

The ${\mathrm{C}}_3$ and ${\mathrm{C}}_4$ photosynthesis pathways are so called because the initial carbon fixation product in them are respectively:

Light dependent reactions are so called because they require light:

Chemiosmosis in chloroplasts is possible because of:

The following diagram shows the ${\mathrm{C}}_4$ photosynthetic carbon cycle. A and B can respectively be:
   
1. Pyruvate; malate or aspartate
2. Phoshoglycerate; fumarate or aspartate
3. Phosphoenol pyruvate; malate or aspartate
4. Phosphoenol pyruvate; fumarate or aspartate

Identify the correct statement: