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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.
What are the differences between genomes in simple eukaryotes vs complex eukaryotes?
what is the scientific explanation of "touch me not" plant that can react due to any touch
Q. What are the major cellular features of fungi? There are pluricellular and unicellular fungi. All fungi are heterotrophs and eukaryotes. Fungi have cells with cell wall m
Plants - Slow Moving Waters Plant life is abundant in this habitat and includes rooted vascular plants such as pond weeds and grasses, firmly attached aquatic mosses and multi
Equine viral arteritis Equine viral arteritis (EVA) is a highly contagious disease of equines and is caused by equine arteritis virus (EAV), a RNA virus belonging to the genus
Admission Information The physician and nurses are the primary source of facts concerning the purpose of therapeutic plan and expected outcome of hospitalization. The informa
Class Gastropoda Body asymmetrical, depicts torsion or its effects; shell coiled in most, well developed head with radula, large flat foot, gills one or two or with pulmonary
Which type of asexual reproduction takes place in monocystis?
Oogenesis Oogenesis is the formation of ovum from oogonial cells that are formed in the ovary from primordial germ cells. And as in spermatogenesis it involves meiosis to pro
How is snow - blindness caused in humans? a) Mention the site where syngamy happens in amphibians and reptiles correspondingly.
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