You should know, what these terms mean and you should be able to explain them in your own words.
Soma . germ line . stem cells . totipotent . somatic embryogenesis . pattern formation . systemic polarity . cell polarity . closed patterns . open patterns . stochastic . phyllotaxis . telome theory . auxin canalisation . heterocysts . Turing system . reaction-diffusion system . weak coupling . polarity induction . cell lineage .