Solution:
Meristem always acts as sink for food but never as source as it neither forms food nor stores it. Matured leaves and mesophyll are source. Root can act as sink as well as source of food.
Choose the plant organ or tissue that always acts as sink for food but not source.
Meristem always acts as sink for food but never as source as it neither forms food nor stores it. Matured leaves and mesophyll are source. Root can act as sink as well as source of food.