Characterization of nervous system-phylum Annelida
How is nervous system characterized in beings of phylum Annelida? How can one compare cephalization in the annelids to cephalization in platyhelminthes and nematodes?
Expert
Annelids contain a nervous system made up of two ventral chords and one comparatively big nervous cell concentration in its anterior part resembling a primitive brain.
Nematodes contain an anterior neural ring joined to two neural chords, a ventral and a dorsal one, whereas in planarias (or platyhelminthes) there are just two small anterior “cerebral” ganglia from which neural chords divide. Cephalization in annelids therefore is more outstanding than in nematodes or in the flatworms.
DECENTRALIZATION Meaning and Definition
Much of the literature of this learning, seems to be following in the tradition of learning theories and taking a psychological or individual perspective on the phenomenon. There is a debate about whether or not organizations can learn and many just take the approach
Write down the main human diseases caused by the fungi?
What is meant by hemodialysis?
What is the usual morphological feature of nematodes which distinguishes them from platyhelminthes?
State type of plant tissue is cork?
What do you mean by osmotic pressure?
a) "Knowledge portals" available on employees' individual desktop PCs or PDAs for easy access to all useful data in the organization. b) Software that transforms text and numbers into charts and graphs to make it easier to glean relevant information. c) More sophisticated filters,
Describe briefly the relation between thyroid and hypophysis?
Briefly illustrate out clotting factors?
18,76,764
1929662 Asked
3,689
Active Tutors
1461327
Questions Answered
Start Excelling in your courses, Ask an Expert and get answers for your homework and assignments!!