Linings of organs — task. Biology CBSE Live product, Class 9 (2025-26).

1. Endothelium of the inner surface of blood vessels in vertebrates is formed _________.

pseudostratified columnar
simple squamous
stratified squamous
simple cuboidal

2. Cells of squamous epithelium are ______.

flat plate-like
tall cylindrical
irregular
columnar

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