A nongreen stem branch that grows obliquely or sometimes grows horizontally inside the soil and then comes out of the soil as a branch is called

Primary function of stem is to

Underground stem is rhizome in plant

Rhizome of ginger is like the roots of other plants that grows underground. Despite this fact ginger is a stem and not a root. Justify.

In Opuntia, the function of phyotosynthesis is carried out by

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(special character - example )