In monocotyledonous seeds the outer covering of endosperm separates the embryo by a proteinous layer called as:
(1) Aleurone
(2) Scutellum
(3) Testa
(4) Tegmen
(1) Aleurone layer is the outermost layer of the endosperm. Aleurone cells remain alive at maturity. It is a single layer of cells that secrete alpha amylase.
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