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How does the contraceptive diaphragm work? What are the limitations of this contraceptive method?
The contraceptive diaphragm is an artifact made of latex or plastic that when placed on the vaginal fundus covers the uterine cervix forbidding the passage of sperm cells by the cervical canal. To be more effective the diaphragm requires to be used together with spermicide. This method though does not prevent sexually transmitted diseases (STDs).
Heteromorphic Types - Intra specific Incompatibility Plants of the same species produce flowers that differ in morphology. This involves two (distyly) or three (tristyly) morp
What is the root pressure? The Root pressure is the pressure that forces water from the soil to be absorbed by xylem of the root. It is because of the osmotic gradient between
What is the meaning of Trocophore? This free-swimming ciliated larval stage is found in numerous animal phyla including Mollusca and Annelida. Larvae has a unique circle of pre
What are the four groups of protozoans? The four major groups of protozoans are the sarcodines (that form pseudopods, like amoebae), the mastigophores (flagellated, such as the
Types of Amoeboid Movements As the amoeba's cell body throws out one or a few pseudopodial lobes, a temporary rear end or uroid is pulled along. The central, more fluid protop
What is an Erlenmeyer flask and how is it used? It is same to a beaker, except that it gets narrower at the top. It is use to hold liquids and do reactions in it.
how parasitic protozoans exibit saprophtic mode of nutrition
The major hazards encountered in the biological lab work are diseases like infections and allergies which are caused by handling live animals. dissections, plant and animal tissues
Explain Vegetable dehydration It reduces the natural water content below the level critical for the growth of microorganisms (12-15%), without being detrimental to important nu
What are the main biological processes in which calcium participates? Calcium is present in almost all cells and has some functions. Calcium has a significant role in muscul
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