Question

Aleurone layer is a

• A. Outer layer of scutellum in contact with endosperm.
• B. Layer of pericarp specialized in absorption of water.
• C. Layer present in the hypocotyl that guides pollen tube.
• D. Layer present on the outside of endosperm with protein grains.

Answer 1

The correct option is D Layer present on the outside of endosperm with protein grains.

Aleurone layer in the seed helps in embryo protection, utilization of stored food and storage of food. Aleurone is a protein found in protein granules of maturing seeds and tubers. The term also describes one of the two major cell types of the endosperm, the aleurone layer. The aleurone layer is the outermost layer of the endosperm, followed by the inner starchy endosperm. This layer of cells is sometimes referred to as the peripheral endosperm. It lies between the pericarp and the hyaline layer of the endosperm. Unlike the cells of the starchy endosperm, aleurone cells remain alive at maturity.
Thus, the correct answer is option D.