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!
Digestive System of Class Asteroidea
Most asteroids are scavengers or carnivores and feed on snails, bivalves, polychaets, other echinoderms, fish, sponges, sea anemones and polyps of hydroids and corals. Some feed on plankton and detritus. The digestive system of sea stars extends between the oral end and aboral disc of the animal. The mouth lies at the centre of a muscular peristomial membrane. The mouth is followed by a short oesophagus that in turn opens into a large stomach. The stomach occupies most of the interior of the disc and is divided by a horizontal constriction into a large oval cardiac stomach and a smaller, flattened pyloric stomach. The walls of gastric stomach are pouched. In each arm a pair of digestive glands or pyloric caeca are present and their ducts open into pyloric stomach. The pyloric stomach leads into a short tubular intestine on the aboral side. The intestine opens to the outside through a minute anus at the centre of the aboral surface of the disc. A number of small outpocketings called rectal caeca arise from the intestine.
Chromosome partitioning depends on changes in the polymerization state of bacterial proteins that are functionally analogous to what eukaryotic protein?
Does the hypophysis-ovaries endocrine axis work in the same way during pregnancy as in non-pregnant women? If pregnancy does not occur how does another menstrual cycle begin? T
Define Instrument for Absorbed Radiation - Spectrophotometer? In contrast to colorimeter, spectrophotometer is an instrument that is capable of splitting the incident radiation
The ability to maintain myocardial perfusion at constant levels in the face of changing driving presence is termed autoregulation. In normal cases, autoregulation is maintained at
Explain Diagnosis of Root Perforation 1- Exploration: Continuous bleeding if the defect touched during cleaning and shaping lead to difficult vision. Difficult to d
Q. Accessory Food Substances or Vitamins ? Bacteria also vary in their need for vitamins or accessory growth factors. Some microorganisms are unable to synthesize some or all o
In what ways can we try to protect a species from extinction? We can attempt to protect species from extinction by making it illegal to kill the threatened animals or uproot o
Classification according to the modes of transmission 1. Direct zoonoses: The direct zoonoses are those zoonoses that are transmitted from an infected vertebrate host to a
in what aspect are the cnidarians similar to the protozoans?
Question 1: (a) List some differences between a bacteria and a virus? (b) Define‘Swine Flu'. List the main types of ‘Swine Flu' viruses? (c) Describe the preventive measures
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