radiata
(Science: zoology) An extensive artificial group of invertebrates, having all the parts arranged radially around the vertical axis of the body, and the various organs repeated symmetrically in each ray or spheromere.
It includes the coelenterates and the echinoderms. Formerly, the group was supposed to be a natural one, and was considered one of the grand divisions of the animal kingdom.
Origin: NL, fr. Radiatus, p. P. See Radiate.
radiata (Science: zoology) An extensive artificial group of invertebrates, having all the parts arranged radially around the vertical axis of the body, and the various organs repeated symmetrically in each ray or spheromere. It includes the coelenterates and the echinoderms. Formerly, the group was supposed to be a natural one, and was considered one of..
Plant cells have plastids essential in photosynthesis. They also have an additional layer called cell wall on their cell..
Myelin sheath is essential for a faster conductivity of signals. Know more about this feature of some neurons in the Cen..
This lesson is about the methods used for ecological research, such as quadrat and transect sampling, canopy fogging, an..
Autotrophs flourished, absorbing carbon and light. Soon after, primitive life forms that could assimilate oxygen thrived..
The sequence of amino acids determines the type of protein. Protein is synthesized according to the sequence of nucleoti..
This tutorial investigates perception as two people can interpret the same thing differently. Know more about human perc..
