No. A unicellular organism is an organism made up of ONE CELL, so they're all microscopic. Microscopic means that you can't see it it without a microscope. And you can see a sea urchin, so it is not microscopic, so it's not unicellular.
No. Protists are unicellular, or unicellular organisms which form multicellular structures. Arthropods, including insects, spiders, crabs, lobsters, etc., clearly aren't unicellular. They belong to the kingdom animalia.
They express the characteristics inherent to arthropods. All insects are arthropods. Not all arthropods are insects.
NO Mammals are not arthropods. Arthropods are insects.
arthropods are eukaryotic because arthropods are animals.
They express the characteristics inherent to arthropods. All insects are arthropods. Not all arthropods are insects.
Yes they are arthropods
No, goats are not arthropods.
No, people are not arthropods.
Yes, they do reflect a high degree of internal organization with organ systems for circulatory, reproductive, digestive and neurological functions to support a sensory array including (in most) vision and (in many) a highly attenuated chemical sense.
Insects are arthropods.
no, i dont know what they are, but they are not arthropods
Euglena are unicellular organisms. They are microscopic, single-celled organisms that are often found in freshwater environments.