Reproduction1 Alternation of Generation Flashcards
Mature, fertilized ovary
Seed
3 Parts of a seed
Embryo, Testa(seed coat), Food source(endosperm)
Seed Coat
testa
Protects embryo
Food Soiurce
nourishes embryo
what are the advantages of seeds over free sporing plants
seeds become widely scattered by wind or animals
alternation of generations
defined as the alternation of multicellular diploid and haploid,
alternation of generations
Subsequent generations of individuals alternate between
haploid and diploid organisms.
In organisms with alternating generations most or nearly all
tissues can be
haploid
All plants are characterized by
alternation of generations life cycle
Haploid another word
Gametophytic
Another word for Diploid
sporophytic
Where are sporocytes contained
sporangium
diploid phase process
Fertilization–>zygote–> sporophyte–>sporangia–>meiosis
haploid phase
meiosis–>spores–>gametophyte–>archegonia/antheridia–> fertilization
forms eggs
Archegonia
Gametophyte
haploid gamete producing phase in life cycle
forms sperm
Antheridia
Sporophyte
the diploid spore-producing phase in the life cycle.
Gametophyte dominant
Bryophytes
Sporophyte dominant but
Gametophyte freeliving and
photosynthesizing
Ferns
Sporophyte dominant and gametophyte
greatly reduced
Angiosperms and Gymnosperms
in bryophytes how do sperm get to egg
swim
one type of spore, basic condition
homospory
2 types of spores
Heterospory
