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Evolution and Diversity Exam 3
Exam 3
47
Biology
Undergraduate 1
11/08/2017

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Term
Spermatophyte
Definition
Seed plants aka gymnosperms and angiosperms
Term
Gymnosperms
Definition
produce exposed seeds, not fruit, produces wood through vascular cambium, greatest diversity was the Mesozoic period, phylas: cycads, Ginkgo biloba, and conifers
Term
Cycads
Definition
300 species live in tropical and subtropical regions. Features: palmlike leaves, nonwoody stems, coralloid roots with cyanobacterial endosymbionts, toxins and large conelike seedproducing structures
Term
Ginkgo biloba
Definition
last species from phylum from Jurassic period. Individual trees produce ovules and seeds or pollen, with a sex chromosome system much like that of humans
Term
Conifers
Definition
source of wood and pulp for humans. Reproduction involves simple pollen cones and complex ovule-producing cones.
Term
Angiosperms
Definition
inherited seeds and other features from gymnosperms, display characteristics of fruits and flowers
Term
Flowers
Definition
foster seed production and are adapted in ways that aid pollination. Flower organs; sepals, petals, stamens, and carpels
Term
Carpel
Definition
a group of fused carpel takes distinctive shape known as a pistil
Term
Stigma
Definition
receptive surface for pollen, pollen tubes grow through the style, and ovules develop within the ovary.
Term
Pollination
Definition
transfer of pollen from a stamen to pistil
Term
Double fertilization
Definition
production of both zygote and nutritive tissue. pollen germinates stigma pollen tubes successfully deposit sperm near eggs in ovules
Term
Fungi
Definition
opisthokont, cell walls composed of chitin, fungal bodies (mycelia) are made of hyphae which feed and grow at tips
Term
Reproduction
Definition
asexual produce rapidly does involve meiosis, display haploid-dominant sexual life cycles hyphae fuse with different mycelium and produce fruiting bodies
Term
Groups of Fungi
Definition
cryptomycota, chytrids, microsporidia, zygomycetes, AM fungi, ascomycetes, and basidiomycetes
Term
Crypomycota
Definition
simplest and earliest fungi, commonly occur in aquatic habitats and moist soil, flagellate reproduction, mysterious lack rigid cell wall, lack chitin
Term
Microsporidia
Definition
single-celled fungi that parasitize animal cells, mitochondria --> mitosomes
Term
Zygomycetes
Definition
large zygospores, sexual reproduction, black bread mold
Term
AM fungi
Definition
produce distinctive large multinucleate spores and for beneficial arbuscular mycorrhizal relationships with many types of plants
Term
Ascomycetes
Definition
sexual ascopores in saclike asci at the surface of fruiting bodies, ascocarps, Lichen symbionts simple spores
Term
Basidiomycetes
Definition
sexual basidiospores on club-shaped basidia in fruiting bodies known as basidiocarps. Mushrooms, puffballs, stinkhorns, shelf fungi, rusts, and smuts. Dikaryotic mycelium produce many fruiting bodies
Term
Mycorrhizae
Definition
symbiotic associations between fungi and plant roots
Term
Characteristics of Animals
Definition
mulicellular, extracellular matrix, unique cell junctions, heterotrophic feeders and internal digestion, nervouse system, muscle tissue
Term
Animal classification
Definition
parazoa(sponges), eumetazoa(all other animals), eumetazoa - radial (cnidarians and ctenophores) bilateral all other animals radial have endoderm and ectoderm bilateral have another mesoderm, protostomes blastospore --> mouth deuterosomes --> anus, coelum (body cavity)
Term
Male gametophyte
Definition
pollen inside microsporangium
Term
Female gametophyte
Definition
inside ovule megaspore in megasporangium
Term
Wood
Definition
xylem produced by secondary growth
Term
heartwood
Definition
old xylem that is longer functional
Term
sapwood
Definition
functional xylem, composed of skeletonized cells
Term
vascular cambium
Definition
lateral meristems
Term
xylem
Definition
passively transports water
Term
phloem
Definition
transports food
Term
tracheids
Definition
gymnosperm pits on the side and end walls protect against air bubbles
Term
vessel elements
Definition
angiosperm advantageous for plants that have high water demand
Term
Chytrids
Definition
live in water or moist soil, have a rigid cell wall, asexual toxin to amphibeans
Term
endomycorrhizae
Definition
penetrate cell walls of plants
Term
ectomycorrhizae
Definition
remain outside plant
Term
Generalized life cycle
Definition
zygot (2n) --> meiosis spores (n) --> hyphae --> plasmogamy (n+n) --> heterokaryotic --> karyogamy --> zygote
Term
Choanoflagellate
Definition
a unicellular organism that has flagellum to propel themselves and collect bacteria to eat from by incomplete cleavage
Term
Trilobites
Definition
bilateral symmetry
Term
Endoderm, Ectoderm, Mesoderm
Definition
inside, outside, middle
Term
Collar cells
Definition
whip their flagella to create a water current through the sponge picks up food
Term
Parazoa
Definition
no apparent symmetry, multicellular with several types of cells loosely organized and lack tissues
Term
Choanocyte
Definition
generates water current and filters food particles from water
Term
Ctenophora
Definition
comb jellies, biradially symmetrical, complete gut mouth, and anus
Term
Cnidaria
Definition
aquatic, radial symmetry, sessile polyps or freely floating medsuae,
Term
mesoglea
Definition
translucent non-living jelly substance between two epithelial cell layers between gastrovascular cavity (inside) ectoderm (outside)
Term
Nematocyst
Definition
barbed stinger on jellyfish
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