According to one estimate,how many $kg$ of carbon is fixed in the biosphere through photosynthesis annually?

When green algae are illuminated,motile aerobic bacteria usually accumulate near them. This is because,bacteria

Consider the following statements regarding photosynthesis:
$(A)$ $ATP$ formation during photosynthesis is termed as photophosphorylation.
$(B)$ Kranz anatomy pertains to leaf.
$(C)$ Reduction of $NADP^+$ to $NADPH$ occurs during Calvin cycle.
$(D)$ In a chlorophyll molecule,magnesium is present in the phytol tail.
Which of the above statements are correct?

Select the correct option regarding photosynthesis.

$A$ small mesophytic twig with green leaves is dipped into water in a big beaker under sunlight. It demonstrates

Photosynthesis without the evolution of oxygen is a characteristic of which of the following?