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