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Q. How are animals classified according to the germ layers present in their embryonic development?
Cnidarians are diploblastic, that is they present only ectoderm and endoderm. With the exception of poriferans all remaining animals are triploblastic. Poriferans do not present differentiated tissue organization and so they don't classify regarding germ layers although sometimes they are mentioned as diploblastic.
examples of gametes
Euthenics : It is the study of improvement of human races by providing better conditions. Euthenics means human improvement by altering external factors like as education or the co
What do you mean by Cold Deserts? Cold deserts cover a vast area north of the Himalayan ranges forming an ecosystem with exceptionally low temperatures which may reach - 75°C a
project
Cytokines activate inflammatory cells like neutrophils and eosnophils.IL-5 is important in activation of eosnophils, IL-4 enhances IgE production by B-cells. IL-4, Il-5, IL-6, TNF-
Ornithophily - Cross-pollination In tropical areas, the birds dominate over insects as important pollinators. The most common among them are humming-birds, sun-birds and honey
in human and mammals how many cells result from oogenesis
In patients with left ventricular failure and reduced ejection fractions, the risk of LV thrombus formation and systemic arterial embolization appears to be primarily in patients
Preoperative antibiotics Preoperative antibiotics can decrease the incidence of infection after colorectal surgery; for elective operations, an oral regimen of neomycin (not a
Explain Intensity of heart sound? Intensity of S 1, particularly M 1 depends on the position of the bellies of mitral leafets when the LV begins to contract since S 1 is loudes
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