the spore-producing individual or phase in the life cycle of a plant having alternation of generations
"naked seed" (seeds not covered by a fruit, seeds released from cones; nonflowering)
Flagellated sperm; frond-like leaves; dioecious (separate sexes); evergreen are all characteristics of _______ .
______ is not needed for reproduction in seed producing vascular plants even though 2 phyla contain sperm which are flagellated; sperm will travel by eggs by pollination contained in pollen
In seed producing vascular plants, _____ is packaged in seed used for dispersal of the species
Referring to a plant species that has staminate and carpellate flowers on separate plants.
most are evergreen with needle-like leaves;
do not need water for reproduction;
wind carried pollen;
pollination vs. fertilization;
are all characteristics of _______ .
"enclosed seed" (have flowers; flowering plants produce seeds at the base of a flower resulting in a fruit; only one division)
"the monocots" 65,000 species (corn, lily, orchids, all grasses, etc.)
comprising seed plants that produce an embryo with a single cotyledon and parallel-veined leaves: includes grasses and lilies and palms and orchids
"the eudicots" 170,000 species (oaks, hickories, violet, holly, dogwood, birches, poplars, elms, poinsettias, coleus, begonia, roses, geraniums, etc.)
a seed that has one seed leaf and stored food outside the seed leaf; one cotyledon in seed
A "seed leaf" which develops as a part of the seed. It provides nutrients to the developing seedling and eventually becomes the first leaf of the plant.
Seed producing vascular plants have ________, therefore have xylem and phloem and roots, stems, and leaves
pollen lands on stigma. pollen grain releases tube cell. tube cell divides, formiing a pollen tube all the way to the ovary. generative cell releases two sperm. sperm travel down pollen tube for fertilization. tube enters microphyle.