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arshia6446
Sources: Photosynthetic tissues - mature green leaves - green stems. Storage organs that are unloading their stores - storage tissues in germinating seeds - tap roots or tubers at the start of the growth session. Sinks: Roots that are growing or absorbing mineral ions using energy from cell respiration.

Source is tissue, leaves and stem whereas sink are tubers and seeds.

Source and sink cells in a plant.

In a plant cell, photosynthetic tissues, green leaves  and green stems are the source where food is produce while on the other hand, germinating seeds, tubers are the sink where the food are stored so we can conclude that source is tissue, leaves and stem whereas sink are tubers and seeds.

Learn more about sink here: https://brainly.com/question/890547