What role do cotyledons serve in a plant seed?

Cotyledons serve a crucial role in the early development of a plant seed, as they are typically the first leaves that emerge during germination. These structures can be photosynthetic, enabling the plant to begin the process of converting sunlight into energy, which is essential for growth.

In many plants, cotyledons also provide initial nourishment when the seedling is establishing itself before it develops a more extensive root system and true leaves. By potentially engaging in photosynthesis, cotyledons help support the energy needs of the young plant during its early growth stages.

Understanding the roles of cotyledons is critical in botany and agriculture, as they are an important part of the plant's life cycle and growth, ultimately affecting crop yields and plant health.