What is chemotropism ?​

growth or movement of plants towards chemical stimulus is known as chemotropism.

for eg. growth of pollen tube towards ovary of the flower...

i hope it helped

answer; i believe its (ovulation);

when atoms of different types of elements join together, they make molecules called compounds. water consists of compound molecules made up of 2 hydrogen atoms and 1 oxygen atom. this is why it's called h2o. water will always have 2 times the number of hydrogen atoms as oxygen atoms.