Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
How are the symmetry and the nervous system characterized in echinoderms?
Adult echinoderms, with cnidarians, are the animals that present radial symmetry, i.e., their body structures are dispersed around a center. The radial symmetry in echinoderms though is a secondary radial symmetry, as their larval stage has bilateral symmetry and the radial pattern appears only in adult individuals (there are some few adult echinoderms with lateral symmetry). All other animals have lateral symmetry with exception of poriferans (no symmetry is explained for them).
Echinoderms do not present cephalization and they have a disperse network of nerves and neurons made of a neural ring around the mouth and of radial nerves that ramify to follow the pentaradial structure of the body.
Attributes of Population The attributes of a population are of two basic types : i) Numerical attributes such as density, mortality (birth rate), mortality (death rate), disper
NEURITE S - The processes of neurons are called neurites. These are of two types: dendrites or dendrons and an axon or axis cylinder or neuraxon. (a) Dendrites (Den
A study of broken rock Break open several rock specimens. Compare the appearance of freshly broken surfaces with the Heather-worn outside of the rock. The rocks may be safely b
briefly explaintransport system in earthworm
Q. What are the major structures of the human eye? The major structures of the human eye are the iris, the cornea, the pupil, the ciliary muscles, the crystalline lens and the
Q. Where can RNA are found within cells? In the eukaryote cell nucleus the RNA can be found to dispersed in the nuclear fluid, along with the DNA, and as the main constituent o
Q. What is Aortic Enlargement ? Ascending Aorta: The ascending aorta, along with the SVC forms a portion of the right cardiac border on the PA view. After the age of about 40
full variation topic
Explain the Food Security? You were introduced to the concept of food security in Unit 2. Food security, we learnt, is access by all people at all times to enough food for an a
Define Amylopectin - carbohydrates? Amylopectin differs from amylose in being highly branched. Short side chains of about 30 glucose units are attached with α (1-6) linkages ap
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd