Which charges area transferred on rubbing?

Name the cells through which minerals absorbed are transferred form xylem to phloem.

Which charge is present on protons ?

When a polythene piece is rubbed with wool, it acquires negative charge. Is there a transfer of mass from wool to polythene?

ZIFT is transfer of

Why does an ebonite rod get negatively charged on rubbing with fur?

How can the whole charge of a conductor be transferred to another isolated conductor?

One of the methods by which DNA cannot be transferred to host cell by: