which trophic level has the least biomass?\na. 1\nb. 2\nc. 3\nd. 4\ne. 5
which trophic level has the least biomass?\na. 1\nb. 2\nc. 3\nd. 4\ne. 5
Answer
Explanation:
Step1: Recall biomass - trophic level relationship
In a typical ecosystem, biomass generally decreases as we move up the trophic levels. Producers (like phytoplankton) have the most biomass as they form the base of the food - web. Higher trophic levels have less biomass.
Step2: Identify the highest trophic level among options
Crustaceans (level 4) are higher in the trophic levels compared to phytoplankton (level 5 which are producers). Higher trophic levels have less biomass. Among the options given, the highest trophic level is 4.
Answer:
D. 4