Yes, just like two-way traffic, water and minerals and food are moving in opposite directions. Water and minerals move upwards from roots to other parts of the plant and food moves downwards from leaves to other parts.
Question
Can the stem of a plant be compared with a street with two-way traffic? Give reason.
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💡 Some Related Questions
Observe the picture of an activity given below carried out with leaves of plants and polythene bag. 
Now answer the following: (i) Which process is demonstrated in the activity? (ii) When will this activity show better results—on a bright sunny day or a cloudy day?(iii) What will you observe in the polythene bag after a few hours of setting up the activity? (iv) Mention any one precaution you must take while performing this activity.
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(i) Label the parts (a), (b), (c) and (d) in the diagram.(ii) What type of venation does the leaf has?(iii) What type of venation is seen in grass leaves? 