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Question
Which of the following types of cell junction is not found in animal tissues?
Which of the following types of cell junction is not found in animal tissues?
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Solution
The correct option is D Plasmodesmata
Plasmodesmata are junctions between plant cells which facilitate the movement of substances between adjacent cells.
Adherens, tight and gap junctions are present only in animal cells.
Tight junctions are present in epithelial cells and stop substances from leaking across a tissue.
Adherens junctions are present in the epithelial and endothelial tissues. They cement neighbouring cells together.
Gap junctions are present in the epithelial tissues, cardiac and smooth muscles and connect the cytoplasm of adjacent cells, for the transport of substances.
Plasmodesmata are junctions between plant cells which facilitate the movement of substances between adjacent cells.
Adherens, tight and gap junctions are present only in animal cells.
Tight junctions are present in epithelial cells and stop substances from leaking across a tissue.
Adherens junctions are present in the epithelial and endothelial tissues. They cement neighbouring cells together.
Gap junctions are present in the epithelial tissues, cardiac and smooth muscles and connect the cytoplasm of adjacent cells, for the transport of substances.
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