the waxy, waterproof layer that covers the leaves and stems of most plants
a system of tubelike structures inside a plant through which water, minerals, and food move.
The fertilized egg
Plants that lack a well-developed system of tubes for transporting water and other materials
Plants with true vascular tissue
the plant produces spores, tiny cells that can grow into new organisms
the plant produces two kinds of sex cells: sperm cells and egg cells.
Thin, rootlike structures anchor the moss and absorb water and nutrients from the soil.
compound leaf of a fern or palm or cycad
The vascular tissue through which food moves.
the vascular tissue through which water and nutrients move in some plants
Tiny structures that contain the cells that will later become sperm cells.
A structure that contains a young plant inside a protective covering.
The young plant that develops from the zygote, or fertilized egg.
a seed leaf that stores food
Occurs when the embryo begins to grow again and pushes out of the seed.
Protects the root from injury from rocks as the root grows through the soil.
Which divide to produce new phloem and xylem.
water evaporates from a plant's leaves
a seed plant that produces naked seeds
, in gymnosperms, a seed-bearing structure
a structure that contains an egg cell
The transfer of pollen from a male reproductive structure to a female reproductive structure
plants having seeds in a closed ovary
the reproductive structure of an angiosperm
When a flower is still a bud, it is enclosed by leaflike structures
part of the flower that produces sweet smelling nectar and attracts pollinators
are the male reproductive parts
The female part found in most flowers
which protects the seeds as they develop
a ripened ovary and other structures that enclose one or more seeds
angiosperms that have only one seed leaf
produce seeds with two seed leaves
A plant's growth response toward or away from a stimulus
produced by a plant is a chemical that affects how the plant grows and develops
speeds up the rate at which a plant's cells grow
A plant's response to seasonal changes in length of night and day
Short-day plants flower when nights are longer than a critical length.
A plant that flowers when 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
Other plants, such as dandelions, rice, and tomatoes, Their flowering cycle is not sensitive to periods of light and dark
a period when an organism's growth or activity stops
Flowering plants that complete a life cycle within one growing season
Angiosperms that complete their life cycle in two years
Flowering plants that live for more than two years are called perennials.