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Loading and Unloading of Sieve Tubes
In order to understand the loading of food from manufacturing leaf cells to sieve tubes we must examine the anatomy of a minor vein shown in Figure. We can see
Figure: A cross-section of a minor leaf vein. (MC-Mesophyll Cell, XE -Xylem Elements, SE-Sieve Element, TC-Transfer Cells, PP-Phloem Parenchyma cell.
a xylem vessel (X), two sieve elements (SE) which are relatively smaller than other cells and without cytoplasm, the modified companion cells or transfer cells (TC) with dense cytoplasm and phloem parenchyma (PP) which is less dense and vacuolated.
Peri-Implantitis (Infective Process- Bacterial Origin) Bacterial invasion of the peri-implant soft tissue results in its inflammation followed by rapid bone loss. Peri-Implanti
Asexual
Major role in contributing towards motivation. Psychological factors: Depression, anxiety or phobia induced by illness, life- style changes or medication effects, may hinder
What is the etiological agent of amebiasis? How is it transmitted and what are the typical manifestations of the disease? Amebiasis is caused by the protozoan Entamoeba histoly
Sarcodine protozoans are amoebas, and there are two types of them: shelled and naked. As you examine the prepared slides you should be able to see water expulsion vesicle, nucleus,
Q. Concerning the mixture of arterial with venous blood what is the difference between the adult circulation and the human fetal circulation? In the human fetal circulation the
Dextrorotatory:- When an optically .active substance rotates the plane of polarized light in a clockwise direction.
Glyceraldehyde has a one asymmetric carbon atom the central one and so two stereoisomers which is also known as optical isomers are possible, which is two forms of glyceraldehyde,
Cholesterol, from stereos (solid) and the Greek chole- (bile) followed by the chemical suffix -ol for an alcohol is an organic chemical substance classified as a waxy steroid of fa
what chemical is normally used to test for the presence of carbon dioxide
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