Hemichordata | Zoology Notes

Archive | Hemichordata

Classification of Hemichordata | Chordata | Zoology

Phylum Hemichordata has been divided into following four classes: Class 1. Enteropneusta: 1. Commonly known as "acorn" or "tongue worms". 2. Solitary and burrowing worm-like marine animals. 3. Body consists of proboscis, collar and trunk; collar without tentaculated arms. 4. Alimentary canal straight; mouth and anus at opposite ends. 5. Numerous pairs of U-shaped gill-slits. 6. Two pairs of hepatic [...]

By Bhavya S|2017-07-03T08:33:17+00:00July 3, 2017|Hemichordata|Comments Off

5 Main Representative Types of Hemichordata (With Diagram) | Zoology

The following points highlight the five main representative types of hemichordata. The types are: 1. Saccoglossus (=Dolichoglossus) 2. Ptychodera 3. Cephalodiscus 4. Atubaria 5. Rhabdopleura. Type # 1. Saccoglossus (=Dolichoglossus): Saccoglossus (Fig. 3.1) is a typical enteropneust very much similar to Balanoglossus in habits, habitat and structure. It is a marine, slender soft- bodied tongue worm living in spirally twisted [...]

By Bhavya S|2017-07-03T08:33:17+00:00July 3, 2017|Hemichordata|Comments Off