Download Chapter 2 - Vocabulary List

D – 3 Plants
Vocabulary List
transpiration – The movement of water vapor out of a plant and into the air.
vascular system – Long, tube-like tissues in plants through which water and nutrients
move from one part of the plant to another. (xylem up; phloem down)
seed – A plant embryo that is enclosed in a protective coating and has its own source
nutrients.
embryo – A multicellular organism, plant or animal, in its earliest stages of
development.
germination – The beginning of growth of a new plant from a spore or a seed.
pollen – Tiny multicellular grains that contain the underdeveloped sperm cells of a
plant.
gymnosperm – A plant that produces seeds that are not enclosed in flowers or fruit.
(Christmas trees!)
angiosperm – A plant that has flowers and produces seeds enclosed in fruit. (apple &
pear trees)
flower – The reproductive structure of an angiosperm, containing male and female
parts.
fruit – The ripened ovary of a flowering plant that contains seeds.
xylem – (UP) – A vascular tissue that carries water and dissolved nutrients up from the
roots of a plant.
phloem – (DOWN) - A vascular tissue that transports energy and materials (glucose)
down from the leaves of a plant.
perennials – Plants that come back every year. (Dandelions)
annuals – Plants that need to be re-planted every year since these types of plants have a
life cycle of only one year. (Corn, peas, pumpkins)