Why can food transport in plants occur in both directions?
Answer and explanation
Correct answer: Because food moves from a source to parts that need it
The governing concept is phloem translocation from a source to a sink. A mature leaf may act as a source by producing sugars, while roots, growing shoots, flowers, seeds, or fruits may act as sinks by using or storing them. Since different sinks may lie above or below a source at different times, phloem transport can occur in either direction in different sieve tubes. Therefore option A is correct; xylem and the remaining choices are unrelated.
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What is the correct answer to this question?
Because food moves from a source to parts that need it
Why is this the correct answer?
The governing concept is phloem translocation from a source to a sink. A mature leaf may act as a source by producing sugars, while roots, growing shoots, flowers, seeds, or fruits may act as sinks by using or storing them. Since different sinks may lie above or below a source at different times, phloem transport can occur in either direction in different sieve tubes. Therefore option A is correct; xylem and the remaining choices are unrelated.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Life Processes. Topic: Transportation.
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