Geotropism : a response in which a plant grows towards or away from gravity

Geotropism : a response in which a plant grows towards or away from gravity

Phototropism : a response in which a plant grows towards or away from the direction from which light is coming

Homeostasis: the maintenance of a constant internal environment

Drugs : any substance taken into the body that modifies or affects chemical reactions in the body

Asexual reproduction : the process resulting in the production of genetically identical offspring from one parent

Sexual reproduction : the process involving the fusion of haploid nuclei to form a diploid zygote and the production of dissimilar offspring