SOS Biology Unit 4 Quiz 3 Sexual Reproduction
zygote
A fertilized egg
ovum
A mature egg cell, Female gamete contains chromosomes and stored food
gametangia ovary
A reproductive organ that houses and protects the gametes of a plant
adaptation
A trait that helps an organism survive and reproduce. Does not require new genetic information
motile
Capable of movement
gonad
Primary reproductive organs, Ovaries and Testes
flagellum
a long, whip-like structure extending from a cell used for locomotion
cone
a reproductive organ of gymnosperms having a central axis with radiate scales and bracts; can either produce pollen or ovules
conjugation
an act of fertilization involving the transfer of cell contents to another cell; usually occurs in simpler organisms
archegonium
an organ in lower vascular plants, gymnosperms, mosses, and liverworts which produces an egg cell
antheridium
an organ in simpler plants that produces sperm cells
gametangium
an organ of lower plants, some protists and some fungi that produces gametes
motile
capable of independent movement
evolution
changes in a species where offspring are genetically different from the parents. If it is beneficial, they thrive, if harmful they die and don't reproduce.
gymnosperm
cone-bearing plant; often called evergreen
gonad
gamete producing organs in animals
isogamy
gametes are same size for both sexes
immotile
incapable of independent movement
advantages of sexual reproduction
produces genetic variations produces resistance to unfavorable conditions produces disease-free seed plants
gamate
specialized sex cells produced during meiosis; contain half the usual number of chromosomes - allows variation of species as two different parent cells recombine in offspring
anisogamy
the condition of having anisogametes
anisogamete
the condition of having gametes similar in shape, but different in size
anther
the part of the stamen of a flower that bears the pollen