endosperm betydelse and definition

Exempel på endosperm

• As a rule the embryo is very small and surrounded by abundant endosperm. 

• In cases where the embryo has stored reserve food within itself and thus provided for self-nutrition, such endosperm as remains in the seed may take on other functions, for instance, that of water-absorption. 

• The formation of endosperm starts, as has been stated, from the endosperm nucleus. 

• The function of the endosperm is primarily that of nourishing the embryo, and its basal position in the embryo-sac places it favourably for the absorption of food material entering the ovule. 

• This apparently profitable machine permitted the miller to efficiently separate wheat flour into three components: bran, germ and endosperm. 

• The endosperm has a very thick peripheral cell wall (cw).

• The cytokinin or ethylene requirements for overcoming thermoinhibition of lettuce germination can also be eliminated or diminished by removing or weakening the endosperm.

• Or does the radicle elongate to the extent of pushing against the endosperm before endosperm degradation begins?