#dc comics#batman#dc#batfam#bruce wayne#dick grayson#batfamily#tim drake#dc fanart
seen from United States
seen from United States
seen from Switzerland
seen from China
seen from United States
seen from United States
seen from United States
seen from United States
seen from Maldives
seen from Canada
seen from Türkiye
seen from Thailand
seen from United States
seen from United States
seen from United States
seen from Thailand
seen from United States
seen from Maldives
seen from United States
seen from Kazakhstan
(T 02.06.2020): Hearken back to First year University. ☺ Acoelomate!!!
...
Animal Kingdom
ANIMAL KINGDOM Basis of Classification: Salient features of different phyla in the Animal Kingdom: Phylum Digestive system Respiratory system Circulatory system Monoecious/ dioecious Fertilization Development Porifera Absent Absent Absent Monoecious Internal Indirect Coelenterata Incomplete Absent Absent Monoecious Internal Indirect Ctenophora Incomplete Absent Absent Monoecious External…
View On WordPress
Domain: Eukarya
Group: Lophotrochozoans
Phylum: Platyhelminthes (Flatworms)
Class: Turbellaria
Planaria is a triploblastic, free-living flatworm that lives in freshwater ponds. The two ocelli (eye-like structures) consist of pigmented cups lined by sensory cells. The cup shades the sensory cells from light in all directions except one which results in planarians exhibiting negative phototaxis (meaning they move away from light). The Planaria may exhibit a pair of auricles or ear like projections at the base of the head, which are sensitive to touch and the presence of certain chemicals.
Photograph from:www.weinberg.northwestern.edu
