What are the components of the transport system in highly organized plants?

Name the procedure used in the working of artificial kidney.

From the following terms, choose one term which includes the other four: Plasma, Platelets, Blood, RBC, WBC

Out of xylem and phloem, which one carries materials:

(a) upwards as well as downwards?

(b) only upwards?

Name two liquids which help in the transport of substances in the human body.