Most animals and plants are part of more than one food chain. If one part of a food chain alters, the whole food chain is affected. For example, if a disease suddenly wiped out caterpillars, it would affect mice, owls and many other animals.
This phylum consists of the jellyfish, hydra, sea anemones, corals, sea pens, sea wasps, and box jellyfish. There are about 9,000 species. Almost all are marine. This is another ancient group, with fossils perhaps reaching back to 700 mya.
A trochophore is a type of larva found in marine plankton. It belongs to animals of several related phyla, in the superphylum lophotrochozoa.They have two or more bands of cilia. By moving their cilia rapidly, a water eddy is created.In this way they control the direction of their movement. Also, in this way they bring their food closer, to capture it more easily.hey have two or more bands of cilia. By moving their cilia rapidly, a water eddy is created. In this way they control the direction of their movement. Also, in this way they bring their food closer, to capture it more easily.