Draw a schematic diagram of cross section of a part of root showing cell conduction of water from a root hair to xylem.

Define Demography

In an experimental set up pieces of dry cobalt chloride paper are attached to the two surfaces of a dicot leaf and held in position by two glass slides on either side tied-together by elastic bands or hold by clips. The leaf remain attached to its own plant. What will be your observation after some time?

Transpiration can taken place from the leaves through A and through the minute pores openings on the surface of old woody stem called B. Name A and B.