Question

During fruit development, photosynthesising leaves would be the ______and the fruit would be ______.

• A. sink, sink
• B. source, source
• C. source, sink
• D. sink, source

Answer 1

The correct option is C source, sink

During food development, photosynthesizing leaves would be the source and the fruit would be the sink. Source are usually mesophyll cells of leaves where organic substances are synthesised due to photosynthesis. Sink is the region where the organic substances are utilised.
The source and sink may be reversed depending on the seasons or the requirements of the plants in case of leaves.