ANIMAL PHYSIOLOGY
CHEMICAL SIGNALS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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They allow the movement of molecules from one cell to another, enabling communication between cells.
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They prevent the cell membrane from pulling away from the cell wall during periods of drought.
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They eliminate the need to produce signaling molecules and eliminate the need for cells to have receptors for signaling molecules.
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They increase the surface area available for attachment of ribosomes and thus increase protein synthesis.
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Detailed explanation-1: -Plasmodesmata are microchannels/cytoplasm bridges connecting neighboring plant cells and allowing transfer of substances and signals between them.
Detailed explanation-2: -Plant cells communicate with each other via narrow channels embedded across adjacent cell walls. These channels, called plasmodesmata, allow molecules to pass between cells, thereby enabling plants to grow normally and develop tissues and organs.
Detailed explanation-3: -Plasmodesmata (singular, plasmodesma) are small channels that directly connect the cytoplasm of neighboring plant cells to each other, establishing living bridges between cells.
Detailed explanation-4: -Plasmodesmata connect cytoplasms of adjacent cells by traversing the cell wall. Appressed endoplasmic reticulum, called the desmotubule, runs through the plasma membrane-lined pore. Molecules move via the cytoplasmic sleeve between the desmotubule and plasma membrane.
Detailed explanation-5: -Junctions in Plant Cells Plasmodesmata are numerous channels that pass between cell walls of adjacent plant cells and connect their cytoplasm; thereby, enabling materials to be transported from cell to cell, and thus throughout the plant.