Plants Flashcards
5 Characters that separate plants from Charophytes
-Alternation of Generations
-Multicellular, dependent embryos
-Walled spores produced in sporangia
-Multicellular Gametangia
-Apical Meristems
List the 4 steps of Alternation of Generations
-Haploid Gametophyte produces haploid Gametes by mitosis
-Sperm and egg fuse to form diploid sporophyte
-Diploid sporophyte produces haploid spores by meiosis
-Haploid spores develop into Gametophyte
Explain Multicellular, dependent Embryos (2 things)
-diploid embryo is retained within tissue of female gametophyte
-Nutrients transferred from parent to embryo through placental transfer cells
What does Xylem do?
Moves water
What does Phloem do?
Move sugar
4 adaptations of seed plants
-Reduced gametophyte
-Heterospory
-Ovules
-Pollen
Explain Heterospory seed plant adaptation
-Heterosporous plants produce 2 types of spores
-Develop into either male or female ganetophytes
Explain Ovule Seed plant adaptation
-Consists of megasporangium, megaspore, and integuments
-Gymnosperm megasporangia: one integument
-Angiosperm megasporangia: two integuments
Where are angiosperm seeds found
In fruits (mature ovaries)
What does gymnosperm mean?
-Naked seeds
-most gymnosperms are conifers
What are the 2 key adaptations of Angiosperms?
-Flowers
-Fruits
What are the 4 types of floral organs?
-Sepals
-Petals
-Stamens
-Carpels
6 traits of Monocots
-One cotyledon
-Parallel veins
-Vascular tissue scattered
-No main root
-Pollen grain with one opening
-Floral organs in multiple of three
6 traits of Eudicots
-Two cotyledons
-Netlike veins
-Vascular tissue in ring
-Main root present
-Pollen grain with three openings
-Floral organs in multiples of four or five
Explain pollen seed plant adaptation
-Pollen grains make water unnecessary for fertilization
