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Metanephridia - Excretion
Metanephridia are found in coelomates (e.g., annelids). These animals have evolved a close circulatory system intimately associated with the excretory organs resulting in direct exchange of material between the two systems. In these worms an isosmotic fluid appears initially in the nephridium due to filtration of the coelomic fluid through the ciliary mesh of the nephrostpme. Salt is later withdrawn from the fluid as it passes through the extensively looped duct and finally dilute urine is discharged.
Which of the following best describes the tenants of Pangenesis Theory? A. The hereditary material is composed in every organ/tissue and is transmitted to the next generation b
Ecological adaptation in animals to aquatic environment In the aquatic environment animals are confronted with the problem of excess water. Freshwater and marine animals try to
Explain Chronic Infections Fever Chronic Infections Fever: These are generally of longer and sustained duration. The patients have a past history of repeated episodes or con
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Q. What is the typical shape of a population growth curve? How can the biotic potential be represented in the same way graphically? A usual population growth curve number of in
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