Tag Archives | Forms

Forms of Respiration among Arthropods

The following points highlight the two main forms of respiration among arthropods. The forms are: 1. Aquatic Respiration 2. Aerial Respiration. 1. Aquatic Respiration: The organs associated with aquatic respi­ration are: 1. Gills or Branchiae 2. Tracheal gills 3. Blood gills 4. Rectal gills 5. Book gills 6. Branchiostegite or gill cover 7. Epipodite and 8. Branchial basket. 1. Gills [...]

By |2016-05-27T11:32:39+00:00May 27, 2016|Arthropods|Comments Off on Forms of Respiration among Arthropods
Read More

Larva Found in Phylum Echinodermata

Larva Found in Phylum Echinodermata! 1. Dipleurula Larva: 1. The dipleurula form (Fig. 21.39A) is reached during development and is characterised by its bilaterally sym­metrical, egg-shaped body. 2. The ventral concave side bears the mouth and is encircled by a circumoral ciliated band. 3. The anus is disposed ventrally. 4. The digestive canal is differentiated into oesophagus, stomach and intestine. [...]

By |2016-05-27T11:31:32+00:00May 27, 2016|Phylum Echinodermata|Comments Off on Larva Found in Phylum Echinodermata
Read More
Go to Top