Plants

Plant Cells Cell walls  provide protection and structure Conduct photosynthesis – Use chlorophyll in organelle chloroplast to do it

Structures Cuticle  waxy, protective layer secreted onto surface of plant which holds water Cellulose  chemical compound that provides structure and support

Classificiation Vascular plants  use tubelike structures that carry water and nutrients throughout plant Nonvascular plants  lack tubelike structures so must use other ways to transport water and nutrients

Nonvascular Plants Very small plants that have rhizoids rather than roots Reproduce by spores not seeds Examples – Mosses  green, leaflike growths around stalk – Liverworts  flattened, leaflike bodies – Hornworts  one chloroplast in each cell

Moss

Liverwort

Hornwort

Plant Life Cycle Two stages – Gametophyte stage  begins when sex cells produce haploid cells called spores – Sporophyte stage  begins with fertilization