Plants Flashcards
diverse group of eukaryotic, multicellular, photosynthetic autotrophs that inhabit a myriad of environments from lush tropical rainforests to scorching deserts
Plants
fresh water green algae that evolved to plants during the Paleozoic Era, approximately 450 million years ago
Charophytes
plants that lack specialized conducting tissues to transport water and nutrients throughout the plant’s body
Nonvascular plants
Phylum of liverworts
Phylum Hepatophyta
Phylum of true mosses
Phylum Bryophyta
plants that possess specialized tissues for conducting water and nutrients throughout the plant
Vascular Plants
plant organs that absorb water and nutrients from the soil and, in addition, anchor a plant
Roots
vascular plant organs that support leaves and reproductive structures
Stems
the primary photosynthetic organs of plants
Leaves
Phylum of ground pines, club mosses, quillworts, and spike mosses
Phylum Lycophyta
Phylum of ferns
Phylum Pterophyta
appear in the fossil record approximately 305 million years ago during the Carboniferous Period & Mesozoic Era
Gymnosperm
multicellular male gametophytes
Pollen Grains
occurs when pollen is carried from the male reproductive organs to the female reproductive organ in a number of ways
Pollination
having separate sexes
Dioecious
The wood of conifers is considered this. composed primarily of tracheids and rays
Softwood
the wood of angiosperms is considered this. composed primarily of tracheids, rays, and vessel elements.
Hardwood
consists of the cork, cork cambium, and phloem
Bark
the outer bark of a tree
Cork
produces new phloem and xylem in trees
Cambium
composed of a visible band of spring wood and summer wood
Annual Rings
Phylum of cycads
Phylum Cycadophyta
Phylum of Ginkgo biloba
Phylum Ginkgophyta
Phylum of pines, cypresses, spruces, redwoods, cedars, hemlocks, junipers, and yews
Phylum Coniferophyta
flowering plants
Angiosperms
complex reproductive structures
Flowers
posessing little or no woody tissue
Herbaceous
plants that completed their life cycle in one season
Annuals
plants that complete their life cycle in two seasons
Biennials
plants that complete their life cycle in two or more seasons
Perennials
flowering plants with a single cotyledon
Monocots
flowering plants with two cotyledons
Dicots
a structure derived from the ovary of a plant and its accessory tissues exclusive to angiosperms
Fruit
an edible part of a plant derived from petioles, leaves, specialized leaves, roots, stems, or flowers
Vegetable
a ripened ovule of a plant that contains an embryo housed in a protective coat and nourished by stored food
Seed
forms the skin or peel of a fruit
Exocarp
the fleshy portion of the fruit between the exocarp and the endocarp
Mesocarp
the inside layer of the pericarp directly surrounding the seed
Endocarp
resumption of growth and metabolic activity
Germination
embryonic leaves that provide food in Angiosperm seeds
Cotyledons