a waxy or fatty and watertight layer on the external wall of epidermal cells
a reproductive cell or multicellular structure that is resistant to environmental conditions
in plants and algae that have alternation of generations, the diploid individual or generation that produces haploid spores
in alternation of generations, the pspore a rehase in which gametes are formed; a haploid individual that produces gametes
a female reproductive structure that produces a single egg and in which fertilization and development take place
a reproductive structure that produces male sex cells in seedless plants
a specialized sac, case, capsule, or other structure that produces spores
a horizontal, underground stem that provides a mechanism for asexual reproduction
the leaf of a fern or palm
a cluster of sporangia
a vascular seed plant whose seeds are not enclosed by a fruit
a flowering plant that produces seeds within a fruit
a structure of a seed plant that contains a female gametophyte and that develops into a seed after fertilization
a plant embryo that is enclosed in a protective coat
the structure that contains the male gametophyte of seed plants
the transfer of pollen from the male reproductive structures (anthers) to the tip of a female reproductive structure (pistil) of a flower in angiosperms or to the ovule in gymnosperms
an angiosperm that produces seeds that have only one cotyledon
the embryonic leaf of a seed
an angiosperm that produces seeds that have two cotyledons
the male reproductive structure of a flower that produces pollen and consists of an anther at the tip of a filament
the tip of a stamen, which contains the pollen sacs where pollen grains form
the female reproductive part of a flower that produces seeds and consists of an ovary, style, and stigma
a mature plant ovary; the plant organ in which the seeds are enclosed
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