Plankton may be both producer (phytoplankton) and consumer (zoo plankton) but is not a decomposer (that is the job for bacteria). Phytoplankton is the producer, which is eaten by zooplankton, which is then eaten by other organisms in the ocean.
Yes they are consumers
Zoo plankton eat only algae and bacteria.
a lake trout is a consumer
Yes they are consumers
Plankton may be both producer (phytoplankton) and consumer (zoo plankton) but is not a decomposer (that is the job for bacteria). Phytoplankton is the producer, which is eaten by zooplankton, which is then eaten by other organisms in the ocean.
Yes, it filters plankton out of the water to consume.
krill is a consumer because it eats algae and plankton/zoo.
Krill eats zoo plankton so it consumes
It is not a consumer, it is a primry producer
It is a primary consumer. I think occasionally it is a secondary consumer, though. But I wouldn't bet on that.
Anything that eats zoo-plankton is a secondary consumer in the ocean. Because much of the oceans ecosystem is reliant on phytoplankton, and zoo-plankton are some of the only creature that consume phytoplankton, making them a primary consumer, anything that eats zoo-plankton is a secondary consumer. Some exmaples of secondary consumers are muscles, scallops, barnacles, and moving up the scale even the blue whale eats zoo-plankton, therefore making it a secondary consumer.