In this article we will discuss about the structure of Cucumaria with the help of a diagram. 1. It is commonly known as "sea cucumber", is marine and is found in shallow waters. 2. Body elongated, cylindrical, five sided, swollen in the middle and narrow at two ends. 3. The mouth and anus (cloaca) are situated at opposite ends. 4. [...]
In this article we will discuss about the structure of Sand Dollar (Echinarachinus) with the help of a diagram. 1. It is commonly known as "sand dollar" and is a marine echinoderm found buried in sand at the bottom of sea. 2. Body flattened and somewhat round but without any central disc or arms. 3. Whole body surface is covered [...]
In this article we will discuss about Echinodermata:- 1. Introduction to Echinodermata 2. History of Echinodermata 3. General Characters 4. Classification 5. Skeleton 6. Coelom 7. Relationship. Contents: Introduction to Echinodermata History of Echinodermata General Characters of Echinodermata Classification of Echinodermata Skeleton of Echinodermata Coelom in Echinodermata Relationship of Echinodermata 1. Introduction to Echinodermata: Echinodermata form a well defined and [...]