Plants Flashcards
(19 cards)
Higher plants evolved from
Green algea
The main part of the lifecycle is
Haploid
Except sporophytes
Gametophytes produce
Gametes by mitosis
Sporophytes produce
Spores by meiosis
Non Vascular
No xylem/phloem
Bryophyta
Hepatophyta
Anthoceraphyta
Moses, liverworts, hornworts
Vascular and nonseeding
Lycophyta
Pterophyta
Club mosses, ferns, horsetails
Vascular Seeding
Coniferaphyta
Cycadophyta
Ginkophyta
Ginophyta
Anthrophyta (flowering)
Bryophytes
Gametophyte generation is dominant
No seeding
No dormant state
Flagellated spore
Homospry
1 type of spore
Bisexual
Heterospry
Male and Female spore
Seedless
Sporophyte is dominant
Small but free living gametophyte
Flagelatted spores
Gymnosperms
Sporophyte is dom Male gametophyte is a pollen grain Female gamete is retained on sporophyte Seed contains tissues from 1 gametophyte generation and 2 sporophyte generations The pollen grain is haploid tissue
Why Angiosperms are successful
Coevolution with pollinators Seed dispersal (wind, water, animals)
Monocot
One Cotyledon Parallel veins Complex bundles Tiberius root 3 petals
Dicot
2 cotyledons Net like veins Ring of vascular bundles Taproot 4-5 petals
Annuals
1 yr
Biennial
2 yrs
Perennial
Many yrs
Monocarpic
Flowers once
