NEET Biology question
Read the following statements and choose the correct answer. I. Gap junctions cement adjacent cells together. II. Areolar tissue contains fibroblasts, macrophages and mast cells. III. Tight junctions facilitate cells to communicate with each other. IV. Adhering junctions help to stop substances from leaking across tissues. V. Cells of connective tissue except blood secrete fibres of structural proteins called elastin.
Answer: (B)
Solution
Statement I is wrong — cementing cells together is the role of adhering junctions, not gap junctions. Statement III is wrong — facilitating communication between cells is the role of gap junctions, not tight junctions.
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