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  2. Turgor pressure - Wikipedia

    en.wikipedia.org/wiki/Turgor_pressure

    When the cell has low turgor pressure, it is flaccid. In plants, this is shown as wilted anatomical structures. This is more specifically known as plasmolysis. [7] A turgid and flaccid cell. The volume and geometry of the cell affects the value of turgor pressure and how it can affect the cell wall's plasticity.

  3. Guard cell - Wikipedia

    en.wikipedia.org/wiki/Guard_cell

    The stomatal pores are largest when water is freely available and the guard cells become turgid, and closed when water availability is critically low and the guard cells become flaccid. Photosynthesis depends on the diffusion of carbon dioxide (CO 2) from the air through the stomata into the mesophyll tissues.

  4. Plasmolysis - Wikipedia

    en.wikipedia.org/wiki/Plasmolysis

    A plant cell in hypotonic solution will absorb water by endosmosis, so that the increased volume of water in the cell will increase pressure, making the protoplasm push against the cell wall, a condition known as turgor. Turgor makes plant cells push against each other in the same way and is the main line method of support in non-woody plant ...

  5. Epidermis (botany) - Wikipedia

    en.wikipedia.org/wiki/Epidermis_(botany)

    Because the guard cells have a thicker cellulose wall on one side of the cell, i.e. the side around the stomatal pore, the swollen guard cells become curved and pull the stomata open. At night, the sugar is used up and water leaves the guard cells, so they become flaccid and the stomatal pore closes.

  6. Glossary of botanical terms - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_botanical_terms

    A single cell with multiple nuclei, formed when nuclear division was not followed by cytokinesis. coleoptile One type of sheath in the structure of monocotyledon ous seeds. The coleoptile is a protective sheath or cap (pileus), generally more or less pointed, that covers the monocotyledonous plumule as it emerges from the soil. It generally ...

  7. Plant cell - Wikipedia

    en.wikipedia.org/wiki/Plant_cell

    Structure of a plant cell. Plant cells are the cells present in green plants, photosynthetic eukaryotes of the kingdom Plantae.Their distinctive features include primary cell walls containing cellulose, hemicelluloses and pectin, the presence of plastids with the capability to perform photosynthesis and store starch, a large vacuole that regulates turgor pressure, the absence of flagella or ...

  8. File:Turgor pressure on plant cells diagram.svg - Wikipedia

    en.wikipedia.org/wiki/File:Turgor_pressure_on...

    In biology, turgor pressure or turgidity is the pressure of the cell contents against the cell wall, in plant cells, determined by the water content of the vacuole, resulting from osmotic pressure. Date: 17 February 2007: Source: did it myself based on , , and . Author: LadyofHats: Permission (Reusing this file)

  9. Osmosis - Wikipedia

    en.wikipedia.org/wiki/Osmosis

    In doing so, the cell becomes flaccid. In extreme cases, the cell becomes plasmolyzed – the cell membrane disengages with the cell wall due to lack of water pressure on it. [16] When a plant cell is placed in a solution that is hypotonic relative to the cytoplasm, water moves into the cell and the cell swells to become turgid. [15]