Plasmolysis in Elodea 1. Mount a complete leaf in water on a slide and examine cells under the high power. Note the small green granules, chloroplasts, which contain the chlorophyll.
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Source: Bourdoux et al., Sweet potato.
Sweet potato contains raffinose, one of the sugars responsible for flatulence. Three of the sugars which occur in plant tissues, raffinose, stachyose and verbascose are not digested in the upper digestive tract, and so are fermented by colon bacteria to yield the flatus gases, hydrogen and carbon dioxide.
Osmosis experiments for high schools, including studies of Benedict's tes colloids, diffusion, Fehling's test, osmosis, plasmolysis, vitamins, colloids and crystalloids. LabBench Activity Osmosis. Osmosis is a specialized case of diffusion that involves the passive transport of water.
In osmosis water moves through a selectively permeable membrane from a region of its higher concentration to a region of its lower concentration.
The membrane selectively allows passage of certain types of molecules while .
The major classes of cells differentiate from undifferentiated meristematic cells (analogous to the stem cells of animals) to form the tissue structures of roots, stems, leaves, flowers, and reproductive structures.. Xylem cells are elongated cells with lignified secondary thickening of the cell walls.
Xylem cells are specialised for conduction of water, and . Plant body See diagram Parts of a plant You will need some small plants that have flowers, branches and roots. Bring them to the classroom.
Give one plant to each pair of students.