Tundra
Khalil Allen
About
Carrying Capacity - number of people, other living organisms, or crops that a reign can support w/o environmental degradation
Exponential Growth - growth whose rate becomes ever more rapid in proportion to growing total number or size
Density-Dependent Factor - factor limiting size of population whose effect is dependent on number of individuals in the population
Independent Factors - factor that affects size of population, independent or regardless of population density
Hardy-Weinberg Principle - Principle states that allele & genotype frequencies in a population will remain constant from generation
Gene Flow - is the transfer of alleles of genes from one population to another, migration into or out of population
Nonrandom Mating - mating that has not occurred due to chance, and has human interference
Genetic Drift - variation in relative frequency of different genotypes in a single population
Natural Selection - process whereby organisms better adopted to their environment tend to survive and produce offspring
FUNCTIONS
Roots - shallow roots grow in plants in artic tundra because the permafrost prevents plants from sending their roots down past the active layer of soil
Xylem - is a key adaptation marketing the pinnacle of hydraulic efficiency in flowing plants
Phloem - feeding by aphids & grazing by mammalian regulates both significantly more frequent than tundra populations
Flowers - role in sustaining the other life forms that live in this biome
Meristems - located at tip of all roots & shoots the apical; are involved with the extension of the plant body
Seeds - grows vegetation & cottongrass across the tundra
Flower & Structure of a Leaf
Sepal - each of parts of early of the calyx of a flower, enclosing the petals & typically green & leaflike
Petal - each of segments of the Corolla of a flower, which are modified leaves & typically colored
Stamen - male fertilizing organ of a flower, typically consisting of pollen containing anther and a filament
Anther - the part of a stem that contains the pollen
Pistil - the female organs of a flower, comprising the stigma, style, & ovary
Ovary - a female reproductions organ in which ova or eggs are produced, present in humans and other as a pair
Vascular Plants - caribou moss, peat moss, heather and tufted saxatrage
Nonvascular Plants - mosses & liverworts
Gymnosperm - conifers
Angiosperm - Margo Toras
Monocot - poaceae & gramineae
Dicot - Ponderosa pine
Fruits - white grapes, tomatoes, honey berries, citrus, raspberries, peaches, lemons, etc.
Basic Things in Tundra
-Body, coat, feet, food
-sexual
-heterotrophic
-eukaryotic
-extremely endangered
Polar Bear (Ursus maritimus)
-thick oily fur
-mating season in spring
-heterotrophic
-Eurkaryotic
-Endangered
Arctic Fox (Vulpes lagopus)
-thick white coat of fur
-mating starts in spring
-heterotrophic
-Eurkaryotic
-endangered
Musk Ox (Ovibus moschatus)
-outer coat made of long brown hairs
-mating starts late summer, early fall
-heterotrophic
-Eurkaryotic
-not endangered
Eskimo Curlew (Numenius borrealis)
-grey legs
-produce eggs, modify them
-autotroph
-prokaryotic
-8 species, endangered