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43 Cards in this Set

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ACROSOME
AN ORGANELLE AT THE TIP OF A SPERM CELL THAT HELPS THE SPERM PENETRATE THE EGG.
ANGIOSPERM
A FLOWERING PLANT, WHICH FORMS SEED INSIDE A PROTECTIVE CHAMBER CALLED AN OVARY.
ANTHER
THE TERMINAL POLLEN SAC OF A STAMEN INSIDE WHICH POLLEN GRAINS WITH MALE GAMETES FORM IN THE FLOWER OF AN ANTIOSPERM.
ALTERNATION OF GENERATIONS
A LIFE CYCLE IN WHICH THERE IS BOTH A MULTICELLULAR DIPLOID FORM, THE SPOROPHYTE, AND A MULTICELLULAR HAPLOID FORM THE GAMETOPHYTE; CHARASTIC OF PLANTS.
CHIASMA (CROSSING OVER)
THE X SHAPED, MICROSCOPICALLY VISIBLE REAGION REPRESENTING HOMOLOGOUS CHROMATIDS THAT HAVE EXCHANGED GENETIC MATERIAL THROUGH CROSSING OVER DURING MEIOSIS.
CYTOKINESIS
THE DIVISION OF THE CYTOPLASM TO FORM TWO SEPARATE DAUGHTER CELLS IMMEDIATELY AFTER MITOSIS.
DIMORPHIC GENDER ALLOCATION
THE PROPORTIONAL DISTRIBUTION OF REPRODUCTIVE ENERGY B/W FEMALE FERTILITY AND MALE FERTILITY (NOTE: DISTINCT FEMALE PARENT AND DISTINCT MALE PARENT
DIMORPHIC LIFE CYCLE
THE LIFE CYCLE IN WHICH THE ORGANISM SPENDS MOST OF THE TIME IN THE DIPLOID (2N) FORM.
DIPLOID
(2N) A CELL CONTAINING TWO SETS OF CHROMOSOMES, ONE SET FROM EACH PARENT.
DOUBLE FERTILIZATION
A MECHANISM OF GERTILIZATION IN ANGIOSPERMS, IN WHICH TWO SPERM CELLS UNITE WITH TWO CELLS IN THE EMBRYO SAC TO FORM THE ZYGOTE AND ENDOSPERM.
EGG NUCLEUS
SHIT IF I KNOW
EMBRYO
NEW DEVELOPING INDIVIDUALS
EMBRYO SAC
THE FEMALE GAMETOPHYTE OF ANGIOSPERMS, FORMED FROM THE GROWTH AND DIVISION OF THE MEGASPORE INTO A MULTICELLULAR STRUCTURE WITH EIGHT HAPLOID NUCLEI.
EXTERNAL FERTILIZATION
THE FUSION OF GAMETES THAT PARENTS HAVE DISCHARGED INTO THE ENVIRONMENT.
ENDOSPERM
a NUTRIENT RICH TISSUE FORMED BY THE UNION OF SPERM CELL WITH TWO POLAR NUCLEI DURING DOUBLE GERTILIZATION, WHICH PROVIDES NOURISHMENT TO THE DEVELOPING EMBRYO IN ANGIOSPERM SEEDS.
FLOWER
IN AN ANGIOSPERM, A SHORT STEM WITH FOUR SETS OF MODIFIED LEAVES, BEARING STRUCTURES THAT FUNCTION IN SEXUAL REPRODUCTION.
FOLLICLE
A MICROSCOPIC STRUCTURE IN THE OVARY THAT CONTAINS THE DEVELOPING OVUM AND SECRETES ESTROGENS.
GENDER ALLOCATION
THE PROPORTIONAL DISTRUBTION OF REPORDUCTIVE ENERGY BETWEEN FEMALE AND MALE FERTILITY.
GAMETE
A HAPLOID CELL SUCH AS AN EGG OR SPERM. gAMETES UNITE DURING SEXUAL REPRODUCTION TO PRODUCE A DIPLOID ZYGOTE.
GAMETOPHYTE
THE MULTICELLULAR HAPLOID FORM IN ORGANISMS UNDERGOING ALTERNATION OF GENERATIONS THAT MITOTICALLY PRODUCES HAPLOID GAMETES THAT UNITE AND GROW INTO THE SPOROPHYTE GENERATION.
MEIOSIS
A TWO STAGE TYPE OF CELL DIVISION IN SEXUALLY REPRODUCING ORGANISMS THAT RESULTS IN CELLS WITH HALF THE CHROMOSOME # AS THE ORIGINAL CELL.
GONADS
THE MALE AND FEMALE SEX ORGANS TEH GAMETE PRODUCIGN ORGANS IN MOST ANIMALS.
GENERATIVE CELL
GAMETE
HAPLOID
A CELL CONTAINING ONLY ONE SET OF CHROMOSOMES.
HAPLOBIONTIC LIFE CYCLE
THE LIFE CYLCLE THAT INVOLVES ZYGOTIC MEIOSIS.
HERMAPHODITE
AN INDIVIDUAL THAT PRODUCES BOTH EGG AND SPERM DURING SEXUAL REPRODUCTION, THEREFORE FUNCTIONING AS BOTH A MALE AND FEMALE.
HETEROGAMY
in sexual reproduction, the union of two types of sex cell (heterogamete) that are dissimilar in size, structure, and function.
ISOGAMY
A CONDITION IN WHICH MALE AND FEMALE GAMETES ARE MORPHOLOGICALLY INDISTINGUISHABLE.

ENCARTA->the fusion of isogametes in some algae and fungi during reproduction
INTERNAL REPRODUCTION
REPRODUCION IN WHICH SPERM ARE TYPICALLY DEPOSITED IN OR NEAR THE FEMALE REPRODUCTIVE TRACT AND FERTILIZATION OCCURS WITHIN THE TRACT.
Meiosis II
the stages of meiosis II are like that of mitosis...it takes seperately but simultaneously in each of the two groups of chromatids.
megaspore
a spore from a heterosporous plant that develops into a female gametophyte bearing archeogonia
megasporocyte
(2n) meotic diviosion-> 4megaspores
microspore
a spore from a heterosporous plant that develops into a male gametophyte with antheridia.
homologous chromosomes
chromosome pairs of the same lenghth, centromeres position, and staining pattern that posses genes for the same charcters at corresponding loci. One homologous chromosome is inhereited from each parent of the organism.
Protogyny
female first
protandry
male first
parthenogenesis
a type of reproduction in which females produce offspring from unfertilized eggs.
sporophyte
The multicellular diploid form in organisms undergoing alternation of generations that results from a union of gametes ant that results froma union of gametes and that meiotically produces haploid spores that grow into the gametophyte generation.
synapsis
the pairing of replicated homologous chromosomes during prophase I of meiosis.
syngamy
the process of cellular union during fertilization
oogamy
a condition in which the male and female gametes differ, such that a small, flagellated sperm fertilizes a large, nonmotile egg.
ovary
female zygote

In flowers, the portion of a carpel in which the egg containing ovules develop.

In animals, the structure that produces female gametes and reproductive hormones
ovule
a structure that develops in the plant ovary and contains the female gametophyte.