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Which of the following contains tight junctions?

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Which of the following contains tight junctions?

(a) Chordates

(b) Arthropods

(c) Nematodes

(d) Molluscs

I had been asked this question in unit test.

I'd like to ask this question from Extracellular Matrix and Cell Interactions in chapter Extracellular Matrix and Cell Interactions of Cell Biology

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Right choice is (a) Chordates

For explanation: Tight junctions are present only in vertebrates, otherwise known as chordates. The invertebrates contain a junction called septate junction.

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