Alternation of Generations

-A life cycle in which there is both a multicellular diploid form, the sporophyte, and a multicellular haploid form, the gametophyte; characteristic of plants and some algae -The process through which each generation gives rise to the next.

The plant (or the haploid phase in its life cycle) which produces gametes by mitosis in order to produce a zygote.

The plant (or the diploid phase in its life cycle) which produces spores by meiosis in order to produce gametophytes.

A reproductive particle, usually a single cell, released by a fungus, alga, or plant that may germinate into another.

–An alternate name for land plants that refers to their shared derived trait of multicellular, dependent embryos. –Any member of the subkingdom Embryophyta; most land plants.

An alignment of cytoskeletal elements and Golgi-derived vesicles that forms across the midline of a dividing plant cell.

A durable polymer that covers exposed zygotes of charophyte algae and forms the walls of plant spores, preventing them from drying out.

In plants, the male gametangium, a moist chamber in which gametes develop.

Placental Transfer Cell

A plant cell that enhances the transfer of nutrients from parent to embryo.

Embryonic plant tissue in the tips of roots and buds of shoots. The dividing cells of this structure enable the plant to grow in length.

In plants, the female gametangium, a moist chamber in which gametes develop.

A multicellular organ in fungi and plants in which meiosis occurs and haploid cells develop.

A diploid cell, also known as a spore mother cell, that undergoes meiosis and generates haploid spores.

Plant tissue of cells joined into tubes that transport water and nutrients throughout the plant body.

A plant with vascular tissue. Vascular plants include all living plant species except liverworts, mosses, and hornworts.

A group of organisms that share the same level of organizational complexity or share a key adaptation.

A waxy covering on the surface of stems and leaves that prevents desication in terrestrial plants.

An adaptation of some terrestrial plants consisting of an embryo packaged along with a store of food within a protective coat.

A cell containing two sets of chromosomes (2n), one set inherited from each parent.

Growth produced by lateral meristems, thickening the roots and shoots of woody plants.

Seedless Vascular Plants

An informal name for a plant that has vascular tissue but lacks seeds. These plants form a paraphyletic group thatincludes the phyla Lycophyta (club mosses and their relatives) and Pterophyta (ferns and their relatives).

A tough outer covering of a seed, formed from the outer coat of an ovule. In a flowering plant, the seed coat encloses and protects the embryo and endosperm.

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LS II - Exam 3 - p.1

Definitions

Term	Definition
Alternation of Generations	-A life cycle in which there is both a multicellular diploid form, the sporophyte, and a multicellular haploid form, the gametophyte; characteristic of plants and some algae -The process through which each generation gives rise to the next.
Gametophyte	The plant (or the haploid phase in its life cycle) which produces gametes by mitosis in order to produce a zygote.
Sporophyte	The plant (or the diploid phase in its life cycle) which produces spores by meiosis in order to produce gametophytes.
Spore	A reproductive particle, usually a single cell, released by a fungus, alga, or plant that may germinate into another.
Embryophyte	–An alternate name for land plants that refers to their shared derived trait of multicellular, dependent embryos. –Any member of the subkingdom Embryophyta; most land plants.
Phragmoplast	An alignment of cytoskeletal elements and Golgi-derived vesicles that forms across the midline of a dividing plant cell.
Sporopollenin	A durable polymer that covers exposed zygotes of charophyte algae and forms the walls of plant spores, preventing them from drying out.
Antheridium	In plants, the male gametangium, a moist chamber in which gametes develop.
Placental Transfer Cell	A plant cell that enhances the transfer of nutrients from parent to embryo.
Apical Meristems	Embryonic plant tissue in the tips of roots and buds of shoots. The dividing cells of this structure enable the plant to grow in length.
Archegonium	In plants, the female gametangium, a moist chamber in which gametes develop.
Sporangium	A multicellular organ in fungi and plants in which meiosis occurs and haploid cells develop.
Sporocyte	A diploid cell, also known as a spore mother cell, that undergoes meiosis and generates haploid spores.
Vascular Tissue	Plant tissue of cells joined into tubes that transport water and nutrients throughout the plant body.
Vascular Plants	A plant with vascular tissue. Vascular plants include all living plant species except liverworts, mosses, and hornworts.
Grade	A group of organisms that share the same level of organizational complexity or share a key adaptation.
Cuticle	A waxy covering on the surface of stems and leaves that prevents desication in terrestrial plants.
Seed	An adaptation of some terrestrial plants consisting of an embryo packaged along with a store of food within a protective coat.
Diploid Cell	A cell containing two sets of chromosomes (2n), one set inherited from each parent.
Secondary Growth	Growth produced by lateral meristems, thickening the roots and shoots of woody plants.
Seedless Vascular Plants	An informal name for a plant that has vascular tissue but lacks seeds. These plants form a paraphyletic group thatincludes the phyla Lycophyta (club mosses and their relatives) and Pterophyta (ferns and their relatives).
Seed Coat	A tough outer covering of a seed, formed from the outer coat of an ovule. In a flowering plant, the seed coat encloses and protects the embryo and endosperm.
Bryophyte

Created by: John_Breaux

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