In plants, where glucose is produced, stored, and converted into sucrose for transport is known as?

The correct answer is "Source" because in the context of plant biology, a source refers to the parts of the plant where photosynthesis occurs and where glucose is produced. In many plants, this typically takes place in the leaves, which are equipped with chlorophyll to capture sunlight, facilitating the conversion of carbon dioxide and water into glucose and oxygen.

After its production, glucose can be converted into sucrose, a form that is suitable for transport to other parts of the plant where it can be used for energy or growth, such as in roots, fruits, or developing shoots. The ability to store or convert glucose into sucrose is crucial for the plant's energy management and overall functioning, particularly during periods when sunlight is not available, like at night or during the winter months.

The other choices relate to different concepts that do not fit the definition of where glucose is produced and transported. For instance, "solvent" typically refers to a substance that dissolves a solute; "species" relates to a specific group of organisms; and "speciation" refers to the evolutionary process by which new biological species arise.