Cotyledons store food for the developing plant before true leaves appear and photosynthesis begins. As true leaves grow, cotyledons gradually die and drop off. Cutting off any plant's cotyledons generally is not a good idea but is occasionally necessary.

What will happen if the cotyledons of a seedling are removed?

Cotyledon removal resulted in reduced growth and leaf number per plant in young seedlings. ... The number of seeds per plant and, to a lesser extent, single-seed dry-weight were reduced by low N supply; consequently, oil yield per plant was reduced by 85%.

How long does cotyledon take to true leaves?

In general, it takes one to three weeks for true leaves to appear once the cotyledons emerge.