How can we help?

You can also find more resources in our Help Center.

37 terms

Maddie's Plant Term for Chapter 5

STUDY
PLAY
Phloem
the vascular tissue through which food moves in some plants
xylem
the vascular tissue through which water and nutrients move in some plants
pollen
tiny particles (male gametophytes) produced by seed plants that contain the cells that later become sperm cells
seed
the plant structure that contains a young plant inside a protective covering
embryo
the young plant that develops from the zygote
cotyledon
a seed leaf that stores food
germination
the sprouting of the embryo from a seed that occurs where the embryo resumes growth
root cap
a structure that covers the tip of a root, protecting the root from injury
cambium
the layer of cells in a plant that produces new phloem and xylem cells
stomata
Small openings on the underside of a leaf through which oxygen and carbon dioxide can move.
transpiration
loss of water from a plant through its leaves
gymnosperm
seed plant that bears its seeds directly on the surfaces of cones
ovule
A structure that develops within the ovary of a seed plant and contains the female gametophyte.
cone
the reproductive structure of a gymnosperm
pollination
transfer of pollen from the male reproductive structure to the female reproductive structure
angiosperm
a flowering plant that produces seeds within a fruit
flower
the reproductive structure of an angiosperm
sepal
a leaflike structure that encloses the bud of a flower
petal
brightly colored structure just inside the sepals; attracts insects and other pollinators to a flower
stamen
the male reproductive organ of a flower
pistil
The female reproductive part of a flower
ovary
a flower structure that encloses and protects ovules and seeds as they develop
fruit
the ripened ovary and other structures of an angiosperm that enclose one or more seeds
monocot
an angiosperm that has only one seed leaf
dicot
an angiosperm that has two seed leaves
tropism
A growth response of a plant toward or away from a stimulus
hormone
a chemical that affects how the plant grows and develops
auxin
the plant hormone that speeds up the rate of growth of plant cells
photoperiodism
a plants response to seasonal changes in length of night and day
short-day plant
A plant that flowers when the nights are longer than the plant's critical night length.
long-day plant
A plant that flowers when the nights are shorter than the nights are shorter than the plant's critical night length
critical night length
the number of hours of darkness that determines whether or not a plant will flower
day-neutral plant
A plant with a flowering cycle that is not sensitive to periods of light and dark.
dormancy
a period when an organism's growth or activity stops
annual
flowering plant that completes a life cycle within one growing season
biennial
flowering plant that completes its life cycle in two years
perennial
a plant lasting for three seasons or more