What happens if two cotyledons are removed from a germinating bean seed? Why? And if you remove one cotyledon?

If you remove 2 cotyledons, then the plant will die immediately due to the lack of nutrients that are found in the beans in the cotyledons. If one cotyledon is removed, the embryo will grow poorly and will most likely also die due to lack of nutrients. When germinating, the cotyledons become the first embryonic leaves of the seedling. That is, the plant will not be able to develop normally even if it is placed in a nutrient medium.

Conclusion: cotyledons for a plant are a supply of nutrients and the first leaves.