endosperm cell in a sentence

1. About 70 % of angiosperm species have endosperm cells that are polyploid.
2. In oats, barley and other cereal grains, they are located primarily in the endosperm cell wall.
3. Mutants of the " dek1 " gene block the formation of aleurone and cause the cells to develop as starchy endosperm cells instead of aleurone cells.
4. For example, endosperm cell walls in the seeds of cereal grasses, nasturtium, and other species, are rich in glucans and other polysaccharides that are readily digested by enzymes during seed germination to form simple sugars that nourish the growing embryo.
5. It's difficult to find endosperm cell in a sentence.