Question

role of phloem with aphids experiment

Answer 1

Plants transport organic compounds from sources to sinks

Active transport is used to load organic compounds into phloem sieve tubes at the source

High concentrations of solutes in the phloem at the source lead to water uptake by osmosis

Incompressibility of water allows transport along hydrostatic pressure gradients

Raised hydrostatic pressure causes the contents of the phloem to flow towards sinks