part 3 chapter 20-23-----22

Question 1

seed plants

Answer 1

–Has seeds - plant embryo in it = Not the same thing as spore
–Embryo than food supplies then a tough shell

Question 2

Life cycle –

Answer 2

1. Sporophyte ( 2 sets of chromosomes
2. Miositis - ( splits the 2 chromosomes ) now a haploid
   –spores go nowhere- they stay in a corn or flower
   gametophyte( male= pollen ) sperm does not need to swim - pollen can move. Moves from a male flower to a female. Could be wind or other.
   –they go together then become diploid-zygote. Makes new sporophyte

Question 3

3 big difference are

Answer 3

–Spores do not move
–Sperm does not need to swim - water is not need to make more
–Embryo in the seed moves

Question 4

Gymnosperms

Answer 4

–Means neacked seed - not covered by a true fruit
–First seed plants
–When it got colder or dry they took over but they got taken over by flowers
–There are things like brushes, trees, etc…..
–They grow pretty big size for a plant
–Most of the groups are tropical

Question 5

Phylum Coniferophyta

Answer 5

–Plants with cones– both female and male cones can be on the same tree
–Like pine trees
–Most highly like to live out of the Gymnosperms
–They are woody plants (trees, shrubs)
–They are dominant in climates like of canada , northern europe , dry lands

Question 6

Phylum Ginkgophyta

Answer 6

–Only one living species
–Stared as native to only himalayans, but now is world wide
–Separated females and females
–Naked seed plants
–You mostly cut down females because they are smelly
–They become big trees

Question 7

Angiosperms (Phylum Anthophyta)

Answer 7

–Flowering plants
–Most living/ successful plants
–Mostly the plants you see outside
–Become dominant in cretation