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Science Vocabulary

Across
The state of having normal physical functions suspended or slowed down for a period of time; deep sleep
A filamentous outgrowth or root hair on the underside of the thallus in some lower plants
A diploid cell resulting from the fusion of two haploid gametes; a fertilized ovum.
An embryonic leaf in seed-bearing plants, one or more of which are the first leaves to appear from a germinating seed.
The exhalation of water vapor through the stomata.
A plant hormone which causes the elongation of cells in shoots and is involved in regulating plant growth.
A simple, low-growing, nonflowering plant
A plant that is characterized by the presence of conducting tissue.
The development of a plant from a seed or spore after a period of dormancy.
The leaf or leaflike part of a palm, fern, or similar plant.
A plant that has seeds unprotected by an ovary or fruit. Gymnosperms include the conifers, cycads, and ginkgo.
A protective and hard layer covering the epidermis of a plant.
The turning of all or part of an organism in a particular direction in response to an external stimulus.
Down
The asexual and usually diploid phase, producing spores from which the gametophyte arises.
A plant that has flowers and produces seeds enclosed within a carpel. The angiosperms are a large group and include herbaceous plants, shrubs, grasses, and most trees.
A plant that takes two years to grow from seed to fruition and die.
A regulatory substance produced in an organism and transported in tissue fluids such as blood or sap to stimulate specific cells or tissues into action.
Lasting or existing for a long or apparently infinite time; enduring or continually recurring.
The response of an organism to seasonal changes in day length.
A complex conducting tissue, formed of more than one cell type, found in vascular plants.
The gametophyte is the sexual phase in the alternation of generations of plants and a few algae
A chiefly herbaceous plant
Any plant that completes its life cycle in a single growing season.
An angiospermous plant