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Ch.23 vocab

QuestionAnswer
A waxy or fatty and watertight layer on the external wall of epidermal cells. Cuticle
One of many openings in a leaf or a stem of a plant that enable gas exchange to occur. Stoma
One of a pair of specialized cells that border a stoma and regulate gas exchange. Guard cell
A conducting system of tissues that transport water and other materials in plant or in animals. Vascular system
The three groups of plants (liverwort, hornworts, and mosses)that lack specialized conducting tissues and true roots, stems, and leaves. Nonvascular plant
A plant embryo that is enclosed in a protective coat. Seed
An organism in an early stage of development of plants and animals; in humans, a developing individual is referred to as an embryo from the second through the eighth week of pregnancy. Embryo
A plant that produces seeds. Seed Plant
The reproductive structure of a flowering plant that usually consists of a pistil, stamens, petals,and sepals. Flower
The tissue that conducts food (sugars, amino acids, and mineral nutrients) in vascular plants. Phloem
Hard-walled cells transport water and mineral nutrients in a kind of tissue. Xylem
The part of a plants body that grows mostly upward. Shoot
In most plants, the part of the body that grows downward. Root
Zones of actively dividing plant cells. Meristems
Hairlike projections Rhizoids
Rhynia, another early seedless vascular plant, also had horizontal underground stems. Rhizomes
Most fern sporophytes have a rhizome that is anchored by roots and leaves. Fronds
Clusters of nongreen spore-bearing leaves. Cone
Are seed plants whose seeds do not develop within a sealed container (a fruit). Gymnosperms
Most seed plants are flowering plants. Angiosperms
Angiosperms produce seeds that develop enclosed within a specialized structure. Fruit
The seeds of angiosperms have a supply of stored food. Endosperm
Flowering plants that produce seeds with one seed leaf(cotyledon). Monocots
Flowering plants that produce seeds with two seed leaves. Dicots
Created by: Claritavaughn
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