Assertion :- Phloem translocation is bidirectional.
Reason:- Source-sink relationship is variable according to season and need of plant.

A : The translocation in phloem is bidirectional . R : The source and sink relationship is variable .

A : The translocation in phloem is bidirectional . R : The source and sink relationship is variable .

Source and sink relationship is variable and depending on the

The translocation in phloem is unidirectional whereas in the xylem it is bidirectional.

Explain: The relation of source and sink is variable.

Assertion :- None of the xylem and phloem translocation is of exclusive nature. Reason:- Small amount of exchange of materials does take place between xylem and phloem

Assertion: Be is readily attacked by acids. Reason: Be shows diagonal relationship to Na.

Assertion: Be is readily attacked by acids. Reason: Be shows diagonal relationship to Na.

Assertion Symbiosis is a kind of positive interaction. Reason Symbiosis is one-sided relationship.