Give the levels of organisation in animals

animal-kingdom
cbse

#1

The animals differ greatly in their shape and size. Their body shows different levels of organisation and body plan.
(a) Protoplasmic Level - e.g. protozoans
(b) Cellular Level - e.g. sponges
© Tissue Level - e.g. coelenterates
(d) Organ system Level - e.g. all metazoans.