Plants like sugarcane show high productivity and high efficiency of $CO_2$ fixation,because of

The $C_{4}$ plants are twice as efficient as $C_{3}$ plants in terms of fixing $CO_{2}$ but lose only $........$ as much water as $C_{3}$ plants for the same amount of $CO_{2}$ fixed.

The net requirement of assimilatory power for the formation of $6$ hexose molecules in a maize plant is:

$C_4$ plants are more efficient at photosynthesis than $C_3$ plants because........

Which of the following cells of $C_4$ plants are prominently loaded with starch?

Members of the family $Crassulaceae$ perform: