Animal kingdom have been divided into many groups?Write four main characteristic of each phylum with examples.
Answers
Explanation:
Phylum Porifera
These are the simplest multicellular animals, found mainly in marine habitats. These organisms have pores all over the body. They have a canal system that helps in circulating water and food particles and oxygen. The body design shows minimal differentiation and division of tissues. Commonly called as Sponges, some of the examples are Spongilla, Sycon etc.
Phylum Coelenterata
These organisms show more body differentiation. They live in water. The body has a sac-like cavity, with a single opening for ingestion an egestion. These animals have two germ layers and hence are called diploblastic. You can see these animals living solitarily or n colonies. Examples include Jellyfish, Sea Anemone.
Phylum Platyhelminthes
These are commonly called flatworms. Their bodies are flattened dorsoventrally. They are the first triploblastic animals, with three germ layers. The body is also bilaterally symmetrical, with both the left and right halves of the body having the same design. Flatworms can be either parasitic or free living. A few examples are Planaria, Liver Fluke, and Tapeworm.
Phylum Nematoda
The bilateral symmetry and triploblastic nature continue in these animals. The body, however, is more cylindrical and not flattened. The body cavity is not a true coelom. And hence it is called a pseudo coelom. Tissues are present, but organs are absent. These organisms show a complete alimentary canal which is straight. Most of these organisms belonging to this phylum are parasitic worms, which cause diseases. Examples are Ascaris, Wucheria.
FOLLOW ME AND MARK AS BRAINLIEST