the vascular tissue through which food moves in some plants
the vascular tissue through which water and nutrients move in some plants
tiny particles (male gametophytes) produced by seed plants that contain the cells that later become sperm cells
the plant structure that contains a young plant inside a protective covering
the young plant that develops from the zygote
a seed leaf that stores food
the sprouting of the embryo from a seed that occurs where the embryo resumes growth
a structure that covers the tip of a root, protecting the root from injury
the layer of cells in a plant that produces new phloem and xylem cells
Small openings on the underside of a leaf through which oxygen and carbon dioxide can move.
loss of water from a plant through its leaves
seed plant that bears its seeds directly on the surfaces of cones
A structure that develops within the ovary of a seed plant and contains the female gametophyte.
the reproductive structure of a gymnosperm
transfer of pollen from the male reproductive structure to the female reproductive structure
a flowering plant that produces seeds within a fruit
the reproductive structure of an angiosperm
a leaflike structure that encloses the bud of a flower
brightly colored structure just inside the sepals; attracts insects and other pollinators to a flower
the male reproductive organ of a flower
The female reproductive part of a flower
a flower structure that encloses and protects ovules and seeds as they develop
the ripened ovary and other structures of an angiosperm that enclose one or more seeds
an angiosperm that has only one seed leaf
an angiosperm that has two seed leaves
A growth response of a plant toward or away from a stimulus
a chemical that affects how the plant grows and develops
the plant hormone that speeds up the rate of growth of plant cells
a plants response to seasonal changes in length of night and day
A plant that flowers when the nights are longer than the plant's critical night length.
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
A plant with a flowering cycle that is not sensitive to periods of light and dark.
a period when an organism's growth or activity stops
flowering plant that completes a life cycle within one growing season
flowering plant that completes its life cycle in two years
a plant lasting for three seasons or more
Please allow access to your computer’s microphone to use Voice Recording.
We can’t access your microphone!
Click the icon above to update your browser permissions and try again
Reload the page to try again!
Press Cmd-0 to reset your zoom
Press Ctrl-0 to reset your zoom
It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.
Your microphone is muted
For help fixing this issue, see this FAQ.