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Tlie phylum Cnidaria or Coelenterata, includes the faliiiliar hydras, jelly fishes, sea anemones and corals. You have olreacly studied about Cnidarialis in Units 4 and 7 of LSE-09 course. These are often brilliantly colourcd. They exhibit radial symnietry, The Cnidarians possess two basic metazoall structural features. Onc, there is an intenla1 space for digestion, called in Cnidarinns as gastrovascular cavity. This cavity lies along the polar axis of the animal atid opens to tlie outside at one end to for111 noutli, Tlie presence of a mouth a~id digestive cavity permits the use of a mucll greater rnlige of food sizes than is possible in tlie protozoarls and sponges. Two, in Clidariails a circle of tentacles, representing exte~lsiolls of the body wall, surrounds tlie ~lioiltli to aid in tlie capture and ingestion of food. Tlie Cnidarian body wall consists of three basic layers: an outer lnycr of cpidennis, nn inner layer of elidoder~nal cells lining Ilie gastrovnscilar cavity, and between these two a layer called mesoglea. The rnesoglea ranges from n tliin, non cellilar membranc to a thick, fibrous, jelly-like, coid lnaterial with or without wanderillg a~noebocytes, A considerable number of different cell types compose tlie epidermis and gastrader~nis, but there is only a limited degree of organ development.
Q. What is the estimated percentage (in mass) of water in the human body? Is this percentage expected to be larger in the adult or in the old individual? Approximately 65% of t
Explain Biochemical Tests Bacterial Testing? It deals with the various biochemical tests used to differentiate microorganisms. Identification of an unknown organism isolated fr
Determine by nutritive muscular cell? The cells which form the gastrodermis lining the inner cavity of cnidarians. They carry out two functions: First is to absorb and digest f
Can you help explain this question in fairly simple terminology? A certain sample of DNA has a Tm of 65oC, while another has a Tm of 58oC. What can you tell about the relative n
The mathematical, statistical and computing methods that aim to resolve biological queries using DNA and amino acid sequences and related information is called as Bioinformatics.
what are the chemical changes takes place during cleavage
Q. Which are the germ layers present in cnidarians? Which tissues of the animal do they originate? These beings present endoderm and ectoderm, two germ layers. Animals only wit
Enumerate about the Luria Nebraska battery Luria Nebraska battery will be based on the assumption that the only connecting link between Luria and that procedure is the set of
Disorders of Thyroid Function: The disorders of thyroid function may lead to following problems: Juvenile Hypothyroidism Hypothyroidism is one of the most common end
Removable soft tissue-borne partial dentures have one of the lowest patient acceptance rates in dentistry. Those patients wearing the partial dentures often exhibit greater mobilit
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