Protects the plant from losing water. The sharp needles of the tree mean that is has less surface area for the sun to make contact. They may also have differently shaped stomata, in order to prevent water loss
Gamates cells have half the chromosomes
This part of the experiment serves as basis of comparison; the one variable being tested has been omitted Experimental group.This part of the experiment shows the effect of the one variable being tested.Independent variable.This variable is an experiment is the one being deliberately changed by the scientist.
