Question

Write one point difference between each , between the following (a) Annelids and arthropods (b) Thallophytes and petridophytes (c) Poriferan and Coelenterates

Answer 1

(a) Both Annelida and Arthropoda are phyla in the Linnaean classification system, the scientific categorization of all living creatures according to their relationships to one another. The Annelida and Arthropoda phyla share membership in the broader Animalia category, or kingdom, that includes all animals. From that similarity, however, they go in separate directions. Arthropods and annelids are different types of organisms. The Annelida phylum includes most worms, while the diverse Arthropoda phylum counts arachnids, lobsters and insects among its members.

(b) The main difference between Thallophyta Bryophyta and Pteridophyta is that the plant body of Thallophyta is a thallus while the plant body of Bryophyta shows stem-like, root-like, and leaf-like structures and the plant body of Pteridophyta is differentiated into true stem, root, and leaves. Thallophyta and Bryophyta do not consist of a true vascular system while Pteridophyta consists of a true vascular system.

(c) The key difference between porifera and coelenterata is that members of the porifera phylum possess a lot of pores or holes all over the body while members of the phylum coelenterata possess only one opening in the body which works as mouth or anus.