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Chapter 29

Biol

TermDefinition
sporopollenin structure-a layer of durable polymer function- prevents exposed zygotes from dying out- found in spore walls
embryophtes plants with embryos- land plants are called this because of the dependency of the embryo on the parent
placental transfer cells nutrients are transferred from parent to embryo
gametophyte haploid and produces haploid gametes by mitosis
sporophyte fusion of gametes gives rise to diploid sporophytes that produce haploid spores by meiosis
sporangia sporophytes produce spores in organs called sporangia
sporocytes diploid cells called sporophytes undergo meiosis to generate haploid spores
gametangia organs in which gametes are produced
archegonia female gametangia that produce eggs and are the site of fertilization
cuticle structure- waxy covering of the epidermis function-prevent water loss
mycorrhizae symbiotic association between fungi and land plants that may have helped plants without true roots to obtain nutrients
vascular tissue transport tissue- land plants can be informally grouped based on presence or absence of- allows for increased height which provides an evolutionary advantage to obtain more sunlight
seed embryo and nutrients surrounded by a protective coating
secondary compounds deter herbivores and parasites
sporophylls Modified leaves with sporangia that produce spores
sori cluster of sporangia on the undersides of sporophylls
homosporous producing one type of spore that develops into a bisexual gametophyte
heterosporous all seed plants and some seedless vascular plants- produce megaspores
megaspores gives rise to female gametophytes
microspores gives rise to male gametophytes
roots organs that anchor vascular plants- enable vascular plants to absorb water and nutrients from the soil- evolved from subterranean stems
leaves organs that increase the surface area of vascular plants, there by capturing more solar energy that is used for photosynthesis
microphylls leaves with a single vein
megaphylls leaves with a highly branched vascular system
Created by: gracelew
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