Quiz 8 Flashcards
Why are plants important
Agriculture Aesthetics/Money Infrastructure Pharmaceuticals Culture
First terrestrial plants
liverworts
marchantia
mosses
Lichens
symbiotic organsisms
asscociations of fungi and either green or cyanobacteria
live on trees, soil, ricks and manmade structures
provide protection for the photosynthetic organism and a structure support for gas exchange, secretes compimds that aid mineral absorption an provides protection from herbivores
mutualistic association
neither symbiont could survive alone
Different types of Lichens
Foliose
Fruticose
Crustose
Mycorrhizae
Symbiotic relationships between fungi and plant roots are called mycorrhizae
endomycorrhizae
fungus enters cells
ectomycorrhizae
fungi may surround the cells without penetrating them
ecotone
region where different ecosystems meet
Adaptations for life on land
waxy outer layer (limits water loss) Openings in epidermis (Stomata) for gas exchange Multicelular reproductive organs development of seeds and fruits wind or animal dispersed male gametes
Megaspore
becomes female gametophyte
Microspore
becomes male gametophyte
Vascular tissues
Xylem
Ploem
Xylem
water transport
Phloem
transport of products of photosynthesis
Nonvascular Plants
do not have true roots, stems or leaves includes moses, liverworts, and hornworts no xylem or phloem Gametophyte dominant reduced sporophyte Capsule contains spores
Nonseeded Vascular Plants
All have transport tissue that move water, nutrients, and photosynthesis products between roots, stems, and leaves Includes ferns wind-dispesred spores sporophyte dominant require water for fertilization
Phyllum of ferns
Pterophytes
Gametophyte
haploid plant that produces haploid gametes through Mitosis
Sporophyte
diploid plant that produces haploid spores through Meiosis
Gymnosperms
Naked seeds
wind transported pollen
heterosporous
non-motile sperm
Angiosperm
Flowering plants "Covered seeds" sporophyte dominant form Pollination - Fertilization - Dispersal Double Fertilization