differentiate between coelenterata and annelida
Answers
Answer:
Annelida:
1. They have no distinct heads.
2. Exoskeletons are absent.
3. They have no jointed appendages.
4. Excretion occurs through nephridia.
5. Respiration occurs through skin or parapodia, e.g. earthworm, Aphrodite.
Athropoda:
1. Body is divided into head, thorax and abdomen.
2. Body is covered by chitinous exoskeletons.
3. They have jointed appendages.
4. Excretion occurs through coxal gland on malpighian tubules.
5. Respiration occurs through tracheae or book lungs, e.g. prawn, cockroach.
Main Difference – Annelida and Arthropoda is :-
Annelida and Arthropoda are two phyla of the kingdom Animalia. Both Annelida and Arthropoda are composed of segmented animals. The main difference between Annelid and Arthropoda is that Annelida consists of a hydrostatic skeleton whereas Arthropoda consists of an exoskeleton made up of chitin. Animals in both phyla are subdivided into different classes based on their diversity. The three classes of the phylum Annelida are Polychaeta (marine bristle worms), Oligochaeta (aquatic and terrestrial earthworms) and Hirudinea (leeches). The five classes of the phylum Arthropoda are Crustacea (shrimp, crayfish, and lobster), Arachnida (spiders, ticks, mites and scorpions), Chilopoda (centipedes), Diplopoda (millipedes) and Insecta (bees, butterflies, roaches and beetles).
Answer:
Both consist of a segmented body. Both Annelida and Arthropoda consist of a hydrostatic skeleton. But Arthropoda consists of a chitinous exoskeleton. This is the main difference between Annelida and Arthropoda