When does plant stop using nutrients from seed leaves?

[dibilo]

Do plants stop making use of nutrients in seed leaves once it develop its first leaves and leave them to die?

Thanks in advance.

 

[manifespo]

Depends on the specific plant. Often in dicots like mammoth sunflower sprouts the two cotyledons (seed leaves) are used up and soon fall off, as the stem outgrows their width. I bet there exists a plant who keeps its seed leaves though.