It directly eats plants like insects
If you mean which biome i don't know sorry. But if you mean where it is a primary consumer or in rare cases a secondary consumer
The crayfish could be a primary consumer but it matters where it stands in that particular food web.
the aphid is the primary consumer
primary consumer
A mollusk is a primary consumer in the food chain.
The honey bee is a primary consumer.
an ant
A secondary consumer in a food web is the carnivorous or omnivorous animal that feeds on the primary consumer, which is the organism (normally a plant) that eats the producer (normally a plant).
primary consumer as it is herbivorous.
A wolf would be a secondary consumer. They feed on primary consumers.
the food chain is made up of producer,primary consumer,secondary consumer and tertiary consumer
Answer is primary consumer. (depending on the type of web you are constructing) krill is a primary consumer or secondary because the primarys include phytoplanktons, zooplankton algae etc and since kill eat phyto and zoo plankton it would be a primary consumer or in a food web it would be in the second bottom row making it secondary in the food piramid or web. eg. bottom row: phytoplankton and zooplankton second bottom row: krill, prawns, and fish then the next up are the tertiary and quaternary row, which are the higher levels in the food web.