AP BIOLOGY

Detailed explanation-1: -Zooplankton and other small marine creatures eat phytoplankton and then become food for fish, crustaceans, and other larger species. Phytoplankton make their energy through photosynthesis, the process of using chlorophyll and sunlight to create energy.

Detailed explanation-2: -Phytoplankton and algae form the bases of aquatic food webs. They are eaten by primary consumers like zooplankton, small fish, and crustaceans. Primary consumers are in turn eaten by fish, small sharks, corals, and baleen whales.

Detailed explanation-3: -Zooplanktons are consumers that feed on phytoplankton. Found in both marine and freshwater habitats. Found floating in the middle layer of water bodies. They are heterotrophs consuming phytoplanktons hence they are primary or secondary consumers in the aquatic food chains.

Detailed explanation-4: -Most zooplankton eat phytoplankton, and most are, in turn, eaten by larger animals (or by each other). Krill may be the most well-known type of zooplankton; they are a major component of the diet of humpback, right, and blue whales.

Detailed explanation-5: -Zooplankton are small animals that live in the water column of almost all water bodies, including oceans, lakes and ponds, although they mostly cannot survive in rivers and streams.