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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.
What are the cell kinds that form the phloem? What are the major features of those cells? The major cells that form the phloem are the sieve elements and the companion cells an
Which functional group (side-chain) can be "cross-linked" in protein? a. sulfhydryl b. amino c. Phosphate d. Hydroxyl e. Carboxyl
Oxaloacetate has two main roles. It is an intermediate which is consumed in gluconeogenesis and it is also a key intermediate in the citric acid cycle where it fuses with acetyl Co
Define Rhizoids - Types of Hyphae? Rhizoids - These are brown slender root like structures which arise in cluster from each node of the stolon. These penetrate the substratum
Problem 1: What is Placebo and Nocebo? Describe the significance of Placebo in clinical trials. Definition of placebo and Nocebo Significance of Placebo in clinical t
Explain about the Holmgren's Wools This is a matching test of coloured pieces of wool. While this is not a highly favored method of testing it does show serious d
Q. What are the noteworthy features of the nervous system of arthropods? In arthropods the nervous system has more sophisticated sensory receptors with well-advanced cephalizat
#question.unique features of amoeba.
Explain Hypertension in biochemical or physiological risk factors? The importance of elevated BP as a risk factor for CAD, heart failure, cerebrovascular disease and renal fail
Q. What is the formula of the DPD for withered (shrunken) plant cells and how is that situation possible? Withered plant cells are those that have shrunk due to loss of water b
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