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What is the seed part that provides energy to the seedling until it can photosynthesize?

Embryo

Cotyledon

The cotyledon plays a crucial role in providing energy to the seedling until it can begin the process of photosynthesis. The cotyledons are the first leaves that emerge from the seed and are typically packed with stored nutrients. These nutrients are vital for the seedling's early growth, supplying the necessary energy as it develops and establishing itself.

The embryo contains the immature plant and is supported by the cotyledon. The radicle is the part of the embryo that develops into the root system, anchoring the plant and facilitating water and nutrient uptake. The testa, or seed coat, serves primarily as a protective outer layer for the seed, keeping it safe from physical damage and pathogens, but it does not provide energy.

Thus, the cotyledon is the part responsible for sustaining the seedling until it can transition to photosynthesis, making it the correct answer.

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Radicle

Testa

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