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Concerning digestion how are poriferans characterized?
Sponges are dissimilar from other animals since they present only intracellular digestion.
They do not have a digestive system nor do they release digestive enzymes in the spongocoel to cause extracellular break down of nutrients.
After the food intake is over, the food gets digested, assimilated and finally egested through the kidneys and anus. The urinary system: • Filters waste materials from the blood
Q. How are the three major arthropod classes characterized according to the presence of antennae? Crustaceans have two pairs of antennae insects have one pair arachnids don't h
Respiration Robert Boyel and Robert Hook first of all explained the meaning of respiration. Main aim of respiration is to liberate energy in the form of A.T.P. Oxidati
Q. What is Taxonomic diversity? Taxonomic diversity is relative abundance of a species as well as the ancestor descendant relationships of species to each other. For example, a
Nasopalatine nerve and vessels Found in the nasopalatine canal, must be taken care off when placing implants in the maxillary incisor region. Subperiosteal implant placement o
write two part each in the body where cuboidal epithelia tissue are found in absorption and excretion
Is transportation of gases in tracheophytes made through the vascular tissues? Carbon dioxide and oxygen are not transported by the xylem or phloem. These gases reach the cells
Q. What are the functional divisions of the nervous system? Functionally the nervous system can be divided into the visceral nervous system and somatic nervous system. The s
What benefits led to natural selection of a two-circuit pump function of the heart a) One circuit to go from the heart to the body and one from the heart to the lungs b) One cir
Determine the Symptoms of Cholera An infective dose of around one million organisms should be ingested to cause illness. The bacteria adhere to the small intestine wall, where
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