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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 Salt is later withdrawn from the fluid as it passes through the extensively looped duct and finally dilute urine is discharged.
What is the disease caused by dietary iodine deficiency? Iodine deficiency causes hypothyroidism, an abnormally lower production of thyroid hormones that require iodine to be s
Enumerate the stages in trabecular bone surface remodeling The stages in trabecular bone surface remodeling are: 1. Quiescence - resting state of the bone surface. 2. Act
Suppuration High number of PMN cells have been detected around implants that are associated with severe signs of mucosal inflammation. Several studies have shown the presence o
Extremes of Heat and Cold Deserts are regions of aridity with rainfall of less than 20 cm per year and the soil, though L, fertile, is too porous to retain any water. In summer
Leaves give off water vapour Use two same pots of soil, one with a small plant and the other without. Cover the soil in every pot with cardboard as shown in the diagram after w
State Bioinert materials Bioinert materials are chemically inert in the body and exhibit minimal chemical interaction with adjacent tissue such as titanium and alumina (Al 2 O
point out the criticism of lamarckism in any six short points.
how do i prove in a diagram that water is needed for photosynthesis
What is Community Ecology explain their characterstics? Community Ecology: In ecological terms, a community consists of an assemblage of all of the populations living and int
How many parts of human body?
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