2. It is a term used in the conditions in an experiment that influence the activity.
Variables b. Values c. Subjects
3. These are the tiny opening on the leaf.
a. Stigmata b. Stomata c. Pores
4. It is part of the plant which is the center of food making process,
a. Root
b. Leaf
c. Stem
. It is NOT included among nlant needs​