Final answer:
The trophic level transfer efficiency (TLTE) represents the amount of energy transferred from one trophic level to the next. In this example, approximately 56.25% of the energy from the primary producers is transferred to the primary consumers.
Step-by-step explanation:
The trophic level transfer efficiency (TLTE) represents the amount of energy transferred from one trophic level to the next. TLTE is calculated by dividing the production at the present trophic level by the production at the previous trophic level, and multiplying it by 100. In the given example, primary producers have a production of 1600 kcal/m² and primary consumers have a production of 900 kcal/m². So, the TLTE would be:
(900/1600) x 100 = 56.25%
Therefore, approximately 56.25% of the energy from the primary producers is transferred to the primary consumers. None of the options provided in the question (a. 50%, b. 25%, c. 75%, or d. 100%) accurately represents the trophic level transfer efficiency.