What is a tree?

conifer

Needle-bearing tree that produce seeds in cones

deciduous

Trees and shrubs that shed their leaves at the end of the growing season

angiosperm

a flowering plant that produces seeds within a fruit

transpiration

loss of water from a plant through its leaves

sapwood

newly formed outer wood lying between the cambium and the heartwood of a tree or woody plant

gymnosperm

seed plant that bears its seeds directly on the surfaces of cones

cambium

the layer of cells in a plant that produces new phloem and xylem cells

heartwood

the older inactive central wood of a tree or woody plant

phloem

vascular tissue responsible for the transport of nutrients and the carbohydrates produced by photosynthesis

xylem

vascular tissue that carries water upward from the roots to every part of a plant