Sperm

Science / Biology / Sperm: The male gamete.

Spermatozoa

Science / Spiders / Spermatozoa: The mature sperm cells. MORE

Spermathecae

Science / Spiders / Spermathecae: The vessels or receptacles in the epigyna of female spiders that store the spermatozoa of the males. MORE

Sperm Induction

Science / Spiders / Sperm Induction: The process of transferring the spermatozoa from the genital orifice beneath the base of the abdomen into the receptacle in the male palpus. MORE

Endosperm

Science / Biology / Endosperm: A food storage tissue that provides nutrients to the developing embryo in angiosperms; formed from the triploid cell produced when a sperm cell fertilizes the central cell. Some endosperm is solid (as MORE

Spermatogenesis

Science / Biology / Spermatogenesis: The development of sperm cells from spermatocytes to mature sperm, including meiosis. MORE

Angiosperms

Science / Biology / Angiosperms: Flowering plants. First appearing at least 110 million years ago from an unknown gymnosperm ancestor, flowering planbts have risen to dominance in most of the worlds floras. The male gametophyte is 2- MORE

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