Ap Bio 1982 Essay

AP Bio 1982:Brendan Ramos In the life calendar method of a fern and a blossom forth plant, compare and contrast each of the chase: A. The gametophyte generation B. Sperm transport and fertilization C. fertilized egg protection A. Small multi carrellular male and effeminate gametophytes are produced within the acme of the sporophyte in bloom plants. The gameteophyte of a fern consists of a free sprightliness distinct plant called the prothallus on which structures called archegonia and antheridia produce eggs and spermatozoan respectively. Gametes are produced by both these gametophytes. A. GAMETOPHYTE GENERATION I. FERN * Haploid * Reduced in likeness to sporophyte * Characterized as a simple prothallus * Eggs formed in archegonia * Sperm formed in antheridia * exposit of archegonial structure * flesh out of antheridial structure * Gametophyte is photosynthetic; has rhizoids for anchoring and pee absorption II.

FLOWERING PLANT * Male (micro)gametophyte (or pollen atom is immature microgametophyte) * Female (mega)gametophyte or embryo sac * Structure of microgametophyte unremarkably 2 prison cells, a electron tube and a generative cell (sometimes identified as a tube cell and two sperm nuclei) * Structure of megagametophyte is 7 cells with 8 nuclei * Both gametophytes nutritionally dependent on the sporophyte * Haploid * Gametophyte develops normally from one type of spore in ferns (homospory), * While in the flowering plnats each gametophyte develops from a unlike type * Of spore (heterospory). B. SPERM TRANSPORT...If you wishing to get a skillful essay, order it on our website: Ordercustompaper.com

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