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Bio chp 14

QuestionAnswer
plants 1. plants create their own food 2. PLANTS ARE SESSILE AND (MOSTLY) TERRESTRIAL : anchored to one spot and almost always on land 3. PLANTS ARE MULTICELLULAR
stationary living (challenge) Because plants can’t move to reach sunlight, they bend in place and grow toward light.
stationary living (challenge) -finding a mate -alternating haploid and diploid life stages and using other organisms to transport the male gametes
stationary living (challenge) RESISTING PREDATION -Plants can’t run from predators so they develop thorns
plants moving onto land problem: gravity solution: grow close to the ground problem: desiccation solution: develop and outer wax layer called cuticle
plants 1. non-vascular 2. vascular 3. gymnosperms 4. angiosperms
to survive on land -In plants, generations alternate between a haploid form and a diploid form “alternation of generations”
“alternation of generations” Gametophyte: haploid cells produce gametes, which go through fertilization to produce the next generation Sporophyte: diploid cells produce haploid spores, which grown into gametophyte generation
non vascular plants -The majority of the life cycle is spent in the haploid stage -haploid stage (fertilization) -diploid stage (meosis)
vascular plants haploid and diploid stages are multicellular and occur interpedently
gymnosperm -meiosis first -fertilization second -evolution of seeds
angiosperm -meiosis first -fertilization second -Haploid gametes are further reduced in size, faster seed production -double fertilization -flowers are the reproductive organ
fungus 1. FUNGI ARE DECOMPOSERS OR SYMBIONTS 2. FUNGI ARE SESSILE 3. FUNGI HAVE CELL WALLS MADE OF CHITIN
fungi -Main body made up of hyphae -Can go through sexual and asexual reproduction -Critical in the evolution of plants
Created by: tcas
 

 



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