Read the following statements and choose the follwoing option: 1. Sponges exhibit cellular level of organisation 2. Coelocentrates have a organ level of organisation 3. Porifera have a tissue level of organisation 4. Notochord is a mesodermally derived rod-like structure formed on the ventral side during embryonic development in some animals. 5. The body cavity, which is lined by mesoderm is called acoelom

Step-by-step solution

In sponges, the cells are arranged as loose cell aggregates, i.e., they exhibit cellular level of organisation. ,Presence or absence of a cavity between the body wall and the gut wall is very important in classification. The body cavity, which is lined by mesoderm is called coelom. Animals possessing coelom are called coelomates, e.g., annelids, molluscs, arthropods, echinoderms, hemichordates and chordate