Evolution/History Of Life

Theory

An explanation for natural events based on a large umber of observations by different people that cannot be disproven based on current technology and evidence.

Law

What happens

Uniformitarianism

Earth is shaped by the same natural processes we see today operating at similar intensities

Biogeography

the study of the geographic distribution of living things and the abiotic factors that affect their distribution

Natural selection

survival of the fittest

Deep time

digging deeper into earths crust, you see more complex things as you get into recent layers of the crust

Evolution

any change in the proportions of different genotypes or characterstics (genes) in a population from one generation to the next

Adaptation

A heritable trait that helps and organisms survival and reproduction in its present environment

Lobefin fishes

developed flesh fins for crawling on the bottom and primitive lungs (now swim bladders)

Evolved Amniotic egg

Shelled, waterproof eggs that had a supply of water for the embryo

Ectotherms

Main source of body heat comes from the environment

Endotherm

an animal that keeps a stable internal body temperature using heat made by its own inner metabolism

Clade

group containing a common ancestor and all decendants

Which domain are humans in?

Eukarya (has cells with a nucleus)

Alleles

Variant of a particular gene (EX: blonde or brown hair)

Genotype

Combination of alleles (EX: BB)

Phenotype

Actual physical or behavioral trait (EX: brown hair, right handed)

Organ

Collection of related tissue grounded together preformed a common function

Organ System

multiple organs working together

Vascular Tissue

Transport water, minerals, and sugars to different parts of the plants

Dermal Tissue

covers and protects the plant

Ground tissue

site of photosynthesis, support and structure for vascular tissue, helps store water and sugar

Diffusion

Movement of particles from high concentration to low concentration until evenly distributed

Osmosis

diffusion of water

Cork Cambium

the outermost lateral meristem

Sapwood

This is the newer wood towards the middle of the stem

Heartwood

This is the older wood towards the middle of the stem

Cuticle

Waxy layer covering all plant leaves

Paliasade Mesophyll

Tightly packed photosynthetic cells

Seed

The reproductive structure of a seed plant; protected by a seed coat; contains an embyronic plant and supply of food for it

Spongy Mesophyll

Loosey packed photosynthetic cels

Pollination

Refers to pollen landing on stigma

Mesophyll

Cells are packed with the chloroplast organelles necessary for photosynthesis to take place

Root

The part of the plant body, normally underground that produces hormones and anchorage

Plant

The reproductive structure of an angiosperm plant

Flower petals

Come in a wide range of shapes and color with the common goal of attracting pollinators

Anther

Where the male gamete (sperm) is produced in a structure called a pollen grain

Stamen

Male portion of the flower

Carpel (or pistil)

The female portion of the flower

Ovary

Base where the egg cell is produced

Style

Stalk rising from the ovary

Stigma

A pollen-landing pan