Phloem is transport element or vascular tissue of plants. Phloem transports the sugars and organic compounds synthesized in leaf to various plant parts. This mechanism of transport in phloem is known as pressure flow. In the above given scenario, flow ewill occur from mature leaf to apical bud and mature leaf to root. Therefore, options b and d are correct. Solution Phloem is transport element or vascular tissue of plants. Phloem transports the sugars and organic compounds synthesized in leaf to various plant parts. This mechanism of transport in phloem is known as pressure flow. In the above given scenario, flow ewill occur from mature leaf to apical bud and mature leaf to root. Therefore, options b and d are correct..