Endoskeleton of echinoderms-analogous structures
How can endoskeleton of echinoderms be typified in comparison to analogous structures present in the vertebrates, in arthropods and in molluscs?
Expert
The echinoderm skeleton is inner, that is, it is the endoskeleton. It is made of calcium carbonate (or calcareous). Vertebrates also have inner skeleton made of cartilages and bones. Arthropods have an outer carapace made of chitin, chitinous exoskeleton. Some molluscs present calcareous shell which works as an exoskeleton.
Define the term atopic dermatitis?
What are the main problems caused by the deficiency of vitamin A? How does this vitamin perform in the physiology of visualization?
Define the term blood stem cells?
Describe what will happen while the government imposes a minimum price i.e. below the market equilibrium price. Why is this true? The minimum price will have no effect on the market. It is true since the price floo
Difference between marketing & advertising: Advertising is paid, public and non-personal announcement of a persuasive message through a recognized sponsor the non-personal presentation
Write down the three main cell types which form osseous tissue? And also write down their functions?
Name the two main ions which participate in an electrical impulse transmission in the neurons? Answer: The two main ions which participate in an electrical impulse t
Give the name of the larval phase of polychaetes? Answer: Among annelid groups only polychaetes present a larval phase. Their larva is termed as trocophore.
Compare the tubular-dorsal nervous system in chordates to the nervous pattern in the invertebrates?
What is the Ph of blood?
18,76,764
1941134 Asked
3,689
Active Tutors
1415779
Questions Answered
Start Excelling in your courses, Ask an Expert and get answers for your homework and assignments!!