Multiple Choice
In flowering plants, plasmodesmata are narrow channels that primarily function to:
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5. Cell Components
Cell Junctions
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Which type of cell junction is primarily responsible for allowing communication and the passage of ions and small molecules between adjacent animal cells, thereby contributing to cell specialization in multicellular organisms?
A
Desmosomes
B
Tight junctions
C
Gap junctions
D
Plasmodesmata
Verified step by step guidance1
Understand the function of each type of cell junction mentioned in the problem: Desmosomes, Tight junctions, Gap junctions, and Plasmodesmata.
Desmosomes are responsible for anchoring cells together, providing mechanical strength, but they do not facilitate communication or the passage of molecules.
Tight junctions create a seal between adjacent cells to prevent leakage of substances, but they do not allow the passage of ions or small molecules.
Gap junctions are specialized cell junctions in animal cells that allow direct communication between adjacent cells by forming channels for the passage of ions, small molecules, and signaling substances.
Plasmodesmata are similar to gap junctions but are found in plant cells, not animal cells. They allow communication and transport between plant cells.
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