lab 10 plants plants evolutions WORK IN PROGRESS
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23 Terms
The green algae called ____ ar the closest relatives of plants
Charophytes
Challenges to plants living on land
drying out (not being submerged)
gravity
benefits of plants living on land
more sunlight
more CO2
soil with nutrients
traits that allow plants to live on land
- cuticles (waxy layer: secreted waterproof coating that prevents evaporative water loss)
- stomata (tiny pores that extend across the cuticle and outer leaf surface that open and close as need to balance gas exchange and demands for water conservation)
- seed coat (shield)
- vascular tissues (to transport water and nutrients thruout the plant body)
stomata
tiny pores that extend across the cuticle and outer leaf surface that open and close as need to balance gas exchange and demands for water conservation
cuticles
secreted waterproof coating that prevents evaporative water loss. water proof leaf!!!111!
alternation of generations
the alternation between the haploid gametophyte and the diploid sporophyte in a plant's life cycle.
BOTH LIFE STAGES are MULTICELLULAR!!!
gametophyte produces sperm from structures called ___
antheridia
gametophyte produces eggs from structures called ___
archegonia
sporophyte produces spores from structures called ___
sporangia
sporophytes diploid or haploid
diploid 2n
gametophyte diploid or haploid
haploid n
bryophytes
nonvascular plants (bryo=moss, phyte=plant)
move material by cell to cell diffusion
vascular plants
specialized transport system so they are fat
2 major groups of plants
nonvascular (bryo) and vascular plants
Xylem
transports water and dissolved minerals
Phloem
transports carbohydrates in solution (sap?)
calyptra
WHAT IS THIS BRO I NEED PICTURES!
operculum
WHAT IS THIS BRO I NEED PICTURES!
peristome teeth
WHAT IS THIS BRO I NEED PICTURES!
which plants are bryophytes
liverworts, mosses, hornworts
which plants are seedless vascular plants
lycophytes (club mosses, spike mosses, quillworts), monilophytes (ferns, horsetails, whisk ferns)
which plants are seed vascular plants
gymnosperms, angiosperms