Morphological features of the echinoderms
What are the fundamental morphological features of the echinoderms?
Expert
Echinoderms, as the name points out (that is, echino = spiny, derma = skin), are creatures with spines initiated from an endoskeleton. Their endoskeleton is made up of calcareous plaques which besides spines have pedicellaria, small pincers employed to clean the body and to help in capturing of prey. They also exists a hydrovascular system termed as the ambulacral system. Adult echinoderms contain pentaradial symmetry; the radial symmetry in such animals is secondary, present just in adults.
Name several of the immuno suppressive agents.
Regarding permeability what kind of membrane is the cell membrane? Answer: The cell membrane is a chosen permeable membrane, that is, it permits the passage of water
Define the term primary immune response? Answer: Primary exposure to an antigen generates primary immune response.
What are zymogens? Briefly explain it.
What is Parkinson’s disease?
What are the major orders of placental mammals? Describe some representative species and distinguishing characteristics of each of such orders?
What is the basic difference among spatial and temporal summation of muscle fibers?
Product Development & Engineering: It refers to the process of developing and designing a device, assembly, or system such that it is generated as an item for sale via some production manufacturing procedure. Product engineering generally entails
Systems Security: It is the control and access of computer system's resources, the information and operating system files. This can be managed by security software installed in the computer. The other meaning might refer to any type of system which se
Explain the blastopore and archenteron? Which is the stage of embryonic development where these structures are formed? Specify the destinations of archenteron and of blastopore?
18,76,764
1956539 Asked
3,689
Active Tutors
1427195
Questions Answered
Start Excelling in your courses, Ask an Expert and get answers for your homework and assignments!!