How symmetry and nervous system typified in echinoderms
How symmetry and nervous system typified in echinoderms?
Expert
Adult echinoderms, along with the cnidarians, are animals which present radial symmetry, that is, their body structures are distributed around the center. Radial symmetry in echinoderms but is a secondary radial symmetry, because their larval stage has bilateral symmetry and radial pattern seems only in the adult individuals (there are some few adult echinoderms with the lateral symmetry). All other animals encompass lateral symmetry with exception of the poriferans (no symmetry is defined for them).
Echinoderms don’t present cephalization and they have a diffuse network of the nerves and the neurons which is made of a neural ring around mouth and of radial nerves which ramify to follow pentaradial structure of body.
What is the significance of radio immuno assay?
What do you mean by gonads? Explain the male and the female gonads in humans?
Operations Management: It deals with the design and management of processes, products, services and supply chains. This considers the acquisition, development, and deployment of resources which firms required to deliver the services and goods their cl
Name the neurotransmitter of the neuromuscular junction? Explain how nervous system triggers muscle contraction?
Write the difference between respiration through cutaneous and diffusion respiration? Explain if blood participate in the cutaneous respiration?
What do ADP and ATP signify? What are the roles of such molecules for cellular energetic metabolism?
Is cell division taking place during the whole cell cycle? And also write down a brief explanation of interphase?
Describe the way of life of sponges?
Specify the target organs on which the insulin and glucagon act?
What do you meant by the term clonal proliferation?
18,76,764
1956078 Asked
3,689
Active Tutors
1439729
Questions Answered
Start Excelling in your courses, Ask an Expert and get answers for your homework and assignments!!