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Nephridia of Worms
As pointed out earlier, nephridia are the excretory tubules in many invertebrates. While all nephridia open to the exterior by an excretory pore known as nephridiopore, some have their internal end closed and others open internally into the body cavity by a ciliated funnel called nephridiostome. The former type of nephridia is known as protonephridia and the latter type are the metanephridia.
OTHE R GLANDS - (i) Mammary glands - Study of mammary gland is mastology. Modified sweat gland. 4-5 pairs in rabbit. 1 pair in human. In opposum 25 pairs (max.).
How much Minerals should be taken for management of obesity? A diet high in sodium may promote retention of fluid in the body. Moderate restriction in the use of common/table s
Carrageenan Carrageenan is a collective term for polysaccharides prepared by alkaline extraction (and modification) from red seaweed (Rhodophycae). Carrageenan is a sulfated ga
Mosaic and Regulative Eggs Eggs as well as early cleavage embryos are occasionally divided into two categories: i) Mosaic or determinate embryos and ii) Regulative or i
Climax Stage - Hydrarch A variety of trees invade the woodland community which soon develop into the climax community. The nature of the climax is dependent upon the climate o
extensive note on the excretory system of amphibian
Q. Show the principle parts of a mold? The principle parts of a mold are a web-like structure known as mycelium and the spore. The mycelium is often white and cottony and penet
Forms of Soil Water Gravitational Water or Ground Water: After a heavy rain or irrigation, much of the water drains or sinks downwards. This is called gravitational water.
State the Definition of Temperature Temperature may be defined as degree or amount of body heat. It is the balance between heat produced and heat lost by the body. It is meas
What best describes the amoebas division? (1) It is a Mode of asexual account in which a one parent is involved. The amoeba cell, which is unicellular, separates into two daug
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