TCAP Worksheet #2 Bio Unit

Who is Carolos Linnaeus? A Swedish scientist who developed the modern taxonomy Taxonomy is the science of describing, naming, and classifying organisms. Classification is the actual division of the organisms.

8 levels of classification Domain Kingdom Phylum Class Order Family Genus Species

Scientific Name Genus (Always capital letter) Species (Lower case letter) Written as Genus species Felis domesticus is a common cat.

Dichotomous Key

Dichotomous Key, cont.

Branching Diagram What is the scientific name for a Burchell’s zebra? Equus burchellii What is the scientific name for a horse? Equus caballus What is the scientific name for a Grevy’s zebra? Equus grevyi

Reproduction Asexual Sexual Budding – A part of the parent organism pinches off and forms a new organism Hydra Fragmentation – A part of the organism breaks off to regenerate into a new organism Sea Star Internal Fertilization – the fertilization of an egg by sperm that occurs inside the body of a female Mammals External Fertilization – the union of sex cells outside the bodies of the parents Fish

Reproduction Asexual Sexual Advantage - Can produce many in a short amount of time Advantage - Organisms are exactly alike Disadvantage – organisms are exactly alike Advantage – Diverse population Advantage – Able to adapt to environment Disadvantage – Cannot produce quickly

Mammal - Monotreme Mammals that lay eggs Echidnas Platypuses

Mammal - Marsupial Mammals that give birth to partially developed young Kangaroos Koalas Wombats Tasmanian devils

Mammal - Placental Live birth to developed young Humans Horses Bats Rabbits

Behaviors Innate Learned Behavior does not depend on learning or experience Chewing Swimming (for fish) Fly (for insects) Behavior that is learned from experience or observation Speech Writing Ride a bike

Behaviors Survival Behaviors Seasonal Behaviors Finding Food Marking Territory Defensive Action Courtship Parenting Migration Slowing Down Hibernation Estivation A Biological Clock Lunch Sleep Cycles of Change Toddler to Pre-Teen Teenager to Young Adult

Natural Selection Overpopulation Genetic Variation within a Population Struggle to Survive Successful Reproduction

Genetic Bottlenecking This occurs when a population is reduced to a few members. Then the genetic variation decreases. The population has a difficult time adapting to a changing environment.

Insecticide Resistance This occurs when the insects can resist the insecticide. Therefore, the next generation is not affected by the poison.

Biodiversity This is every habitat has its own number and variety of organisms. Bio = Life Diverse = Many If a habitat is damaged or destroyed, biodiversity is lost.

Biodiversity Helpful Harmful Conversation Reduce the amount of waste Reuse the things you have (McKay’s Book Store) Recycle the trash that you can (plastics, aluminum, etc.) Chemicals Pollution (Air, Water, Soil) Garbage Removing trees

End of Worksheet #2