Usually the root, but it really depends on the plant.
root
The leaf is dependent on the root for absorbing water and nutrients from the soil. The stem connects the leaf to the root, allowing for the transport of these essential resources to the leaf for photosynthesis and other metabolic processes. Together, the leaf, root, and stem form a cohesive system that supports the overall health and function of the plant.
Stem
No it is a leaf and stem vegtable
sugarcane is a stem
A carrot is a root.
stem root leaf
Rasslesia
The leaf, the stem, the root
It is a stem plant
No, celery has leaves but the celery is not a leaf. if the leaves are up and the root is down whats leftover
A plant root cell does not have chloroplasts whereas a leaf cell has chloroplasts. This is because the roots are away from the light and need not to perform photosynthesis. On the other hand leaves are above the ground attached to the stem branches and perform photosynthsis in sunlight.