Which of the following is an ecological energy source?

In a terrestrial ecosystem, which type of food chain is the major conduit for energy flow?

The transfer of energy from one trophic level to another follows the second law of thermodynamics. The efficiency of energy transfer from herbivores to carnivores is: (in $\%$)

Energy flow and energy transformations in living systems strictly conform to the

Plants capture $............ \%$ of photosynthetically active radiation $(PAR)$.

The statement, "Tiger is in the apex of food chain", indicates