Study your flashcards anywhere!

Download the official Cram app for free >

  • Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key


Play button


Play button




Click to flip

60 Cards in this Set

  • Front
  • Back
What are the 4 characteristics of living things?
- Able to reproduce
- Able to respond to their enviroment
- Able to develop and grow
- Made up of one or more cells
What is evolution?
The process by which modern organisms have descended from ancient organisms
Who is the father of evolution?
Charles Darwin
What are adaptations?
Inherited characteristics that increase an organisms fitness
What is fitness?
Physical and behavioral traits that enables an organsim to survive and reprodue in its own enviroment
In relative dating, what rocks are found at the top?
What is a mutation?
Changes in dna
How does mutation occur?
Viruses, radiation, high temperatures
What kinda of mutation helps survival and species?
What can a harmul mutation do?
Eliminate specie
What is a homologous structure? Give an example
Body parts of different organisms that develop from teh same ancestral body part. Example: Limbs of horses
What is an analogous structure?
Structures that are similar in function but different in orgins
What is a vestigial stucture? Give an example
Structure that serves no use or function in organisim. Example: Appendix
What 3 assumptions did Lamarck make?
- desire to change
- use and disuse
- passing on aquired traits
What 3 things did Lamark explain?
- Variation
- Change in species over time
- Adaptation
What 2 things did Darwain explain?
- Earth is very old
- Diversity and variation
- Artificial selection
What is artificial selection?
Humans intervention in selecting organisms to produce desired traits in offspring
What is natural selection and what is another name for it?
- Individual whose characteristics are well suited to their enviroment will survive and pass on traits to offspring. Also known as Survival of the Fittest
What did Malthus observe?
Population control. Population growth is always balanecd by births and deaths
What is Adaptive radiation/ Divergent evolution?
Different species that move away from a common ancestor
What is convergent evolution?
Production of species that are similar in appearence and behavior
What is paralell evolution?
Production of species that are similar and come from a common ancestor
What is the desire to change theory?
Belief that organisms can change if they want to to better suit their enviroments
What is the use and disuse theory?
Theory that animals could change shape and size if needed to ei. giraffs stretching their necks to reach leaves
Who is Mendell and what did he discover?
- Traits are controled by genes
- Some are dominant others ressesive
New species that evolove from old ones
Place in which organism lives
True or false. No two speceis can occupy the same niche in same location for a long period of time
Populations form when they that they do not interbreed
Seperated reproductive isolation
Theory that evolutionary change occurs slowly and steadily (Darwin)
State where species don't change
Mass extinction
Phenomenon where species just vanish
Puntuated Equilibria
Long stable periods interrupted by brief periods of change
Who is the father of classification?
System of classification
Binomial Nommenclature
Genus name is always...
Species name is always...
-Lower case
Science of naming organisms and grouping them
What is the order of taxons
Kingdom, Phylum, Class,Order, Family, Group, Species
Name the order of human taxons
Animalia,Chordata Mammalia,Primate, Homonida, Homo, Sapien
What are the 6 Kingdoms
Animalia, Fungi, Plantae, Archebacteria/Eubacteria, Protista
Kingdom Protista
Eukaryotic, unicellular, auto/heterotrops
Kingdom Plantae
Eukaryotic, multi, autotrophs
Kingdom Fungi
Eukaryotic, multi, heterotroph
Kingdom Eubacteria and Archaebacteria
Prokaryotic,uni,lack cell wall
Kingdom Animalia
Eukaryotic, multi, heterophic
Phylum Cnidaria is also known as
How are Cnidarians described?
Soft bodied animals with stinging tentacles around their mouth
Class Hydrozoa
Phylum Cnidaria. Example: the hydra
Class Scyphozoa
Phylum Cnidaria. Example: the jellyfish
Class Anthrozoa
Phylum Cnidaria. Example: Sea anemones
Sessile form of Cnidarians
Motile form of Cnidarians
Name the 3 tissues in Cnidarians
Ectoderm, Mesoglea, Endoderm
Cnidarians have what kind of symmetry?
Stinging capsules in Cnidaria
Stinging hook found in nematocytes
Cnidarians have....opening(s)
Digestive system in Cnidarians
Food enters mouth into gastrovascular cavity where it is digested by gastroderm and wastes released out mouth
Nervous system in Cnidarians
*No brain* *no nervous system* nerves connected around mouth
Life cycle in jelly fish
Zygote, Swimming larva, Polyp, Budding Polyp, Young medusa, Medusa