KEY TERMS

the division to which angiosperms belong

a sac-like structure at the tip of the stamen in which pollen grains are produced

the growing point in a vascular  plant at the tip of a shoot  or root where cell division occurs

a group of plants that probably branched off before the separation of monocots and eudicots

the whorl of sepals

the female reproductive part of a flower consisting of the stigma, style, and ovary

the earliest group of seedless vascular plants

the ovulate strobilus on gymnosperms that contains ovules

the dominant division of gymnosperms with the most variety of species

the collection of petals

the one (monocot) or two (dicot) primitive leaves present in a seed

a division  of gymnosperms that grow in tropical climates and resemble palm trees

a group of angiosperms  whose embryos  possess two cotyledons;  also known  as eudicot

describes a life cycle in which the diploid stage is the dominant stage

a group of angiosperms  whose embryos  possess two cotyledons;  also known  as dicot

a seedless vascular  plant that produces large fronds; the most advanced group of seedless vascular plants

the thin stalk that links the anther to the base of the flower

(plural: gametangia) the structure within which gametes are produced

the haploid plant that produces gametes

a division  of gymnosperm with one living species, the Gingko biloba, a tree with fan- shaped leaves

a division of gymnosperms with varied morphological  features that produce vessel elements in their woody tissues

a seed plant with naked seeds (seeds exposed on modified  leaves or in cones)

the group of structures that constitute the female reproductive organ; also called the pistil

describes a life cycle in which the haploid and diploid stages alternate; also known as an alternation  of generations life cycle

describes a life cycle in which the haploid stage is the dominant stage

describes a plant without  woody tissue

having two kinds of spores that give rise to male and female gametophytes

a group of non-vascular plants in which stomata appear

a seedless vascular plant characterized by a jointed  stem

the most primitive group of non-vascular plants

a megaspore mother  cell; larger spore that germinates into a female gametophyte in a heterosporous  plant

smaller spore that produces a male gametophyte in a heterosporous  plant

a related group of angiosperms that produce embryos with one cotyledon and pollen with a single ridge

a group of plants in which a primitive conductive system appears

a plant that lacks vascular tissue formed of specialized cells for the transport of water and nutrients

the chamber that contains and protects the ovule or female megasporangium

a modified leaf interior to the sepal; colorful petals attract animal pollinator

the vascular tissue responsible for transport of sugars, proteins, and other solutes

the group of structures that constitute the female reproductive organ; also called the carpel

a modified  leaf that encloses the bud; outermost structure of a flower

(plural: sporangia) the organ within which spores are produced

a leaf modified structurally to bear sporangia

the diploid plant that produces spores

the group of structures that contain the male reproductive organs

uppermost structure of the carpel where pollen is deposited

cone-like structures that contain the sporangia

the long thin structure that links the stigma to the ovary

the union of two gametes in fertilization

a plant in which there is a network  of cells that conduct water and solutes through the organism

a seedless vascular plant that lost roots and leaves by evolutionary reduction

the vascular tissue responsible for long-distance transport of water and nutrients