The biggest difference is that they lack true tissues and organs and are only made of groups of cells that are not really tissues. They have really no form and look a lot like "lumps".
complex animals have no back bones and simple animals have backbones
No. The terms vertebrate and invertebrate are used to classify animals. Wind is not an animal, nor is it even alive. It is simple the movement of air.
the difference between a alternate and simple leaf is that the simple leaf has no patterns on its leaf and the alternate leaf has pattern
Well, the major difference between a simple plant cell and a simple animal cell is that the plant cell has chloroplasts.
Simple!
Simple
They are called flatworms or tapeworms, but in scientific literature they are called Platyelminthes, they are phylum of relatively simple bilateral, unsegmented, soft bodies, invertebrate animals
simple move slower
what is the difference between simple syrup and invert syrup
Cnidarians, such as jellyfish, corals, and sea anemones, are a specific group of invertebrates characterized by their radial symmetry, the presence of specialized stinging cells called cnidocytes, and a simple body plan with a gastrovascular cavity. In contrast, invertebrates encompass a much broader category that includes various animals lacking a backbone, such as mollusks, arthropods, and annelids, each with diverse structures and life processes. While all cnidarians are invertebrates, not all invertebrates are cnidarians. This distinction highlights the diversity and complexity within the invertebrate phylum.
The key difference between fractional and simple distillation is that fractional distillation is used when the components in the mixture have closer boiling points, while simple distillation is used when the components in the mixture have a large difference in their boiling points
The question is so simple that I wanted to say it. Well maybe it is not that simple for some other people. So the answer is : A sea urchin is an invertebrate because it has a backbone, or the vertebral column......