List the types of vascular tissue you see in this stem cross-section and describe what they do: Please dont give me a link, they don't work for me​

the answer for apex is "1 and 6"

an active site is a region that is present on an enzyme where the reactants or the substrate molecules we can say bind and experience a chemical reaction. the substrate is basically a reactant whose concentration is changing and that is converting into a product after binding at the active site of an enzyme