Question

Stem is a two-way street. justify

Answer 1

Because it has 2 veins
One which carries food and minerals
The other which carries water


Hope it helps

Answer 2

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Stem is called a two-way street because it transfers water and minerals to the leaves in upward direction for the photosynthesis to take place by xylem. At the same time it transfers food(glucose) from the leaves in other parts of the plant in downward direction by phloem.