Adaptation Flashcards
Traits that increase an organism’s chances of survival and reproduction are called __________?
Adaptations
How many types of adaptations are there? WHAT are they?
There are 2 types.
- Physical
- Behavioral
Physical, bodily features that help animals survive are called _________________?
Physical Adaptations
Behavioral adaptations are actions an organism takes to __________?
Survive
Some reasons animal adapt?
- To find food
- To adjust their bodies to the temperature of their environment
- to defend themselves
- to find a mate
- to escape from predators and other dangers
- to adjust for the loss of their habitat
The theory of evolution by natural selection is supported by evidence from?
- Vestigial Structures
- Similar embryos
- Homologous structures
- Fossils
- Molecular evidence
What are vestigial structures?
Vestigial structures are anatomical features that have lost their original function through evolution
Examples of vestigial structures?
- Human tailbone
- wisdom teeth
What are similar embryos?
An embryo is an animal or plant in its earliest stages of development.
Fish embryos and human embryos BOTH have what? Where do they go?
Gill slits; in fish, they develop into gills, but in humans they disappear before birth.
What is homology? What are some examples?
The presence of structures in organisms that share that same base form Also known as homologous structures
Examples: forelimbs of whales, humans, bats, and cats
Fossil helps scientists do what? Example?
Reconstruct the evolutionary histories of present-day species.
Example: Evolution of the horse lineage
What is speciation?
Overtime, populations of the same species can evolve separately to the point where they can no longer interbreed and are so no longer considered to be the same species.
The process of formation of a new species is called ___________?
Speciation
Typically, speciation occurs due to what?
Isolation
What is a dichotomous Key?
A dichotomous key is a method of identification whereby groups of organisms are divided into two categories repeatedly.
With each sequential division, more ___________ is revealed about the ___________ _______________ of a particular organism.
information; specific features
When the organism no longer shares its totality of selected characteristics with any organism, it has been identified. True or False?
true
What is Taxonomy?
Taxonomy is the science of classifying and naming organisms
What does TAXON mean?
A group of organisms that share certain traits
Classification is based on?
Biological relationship
Binomial Nomenclature was developed by a Swedish Scientist named?
Carl Linnaeus
Organisms are classified into how many levels?
7
The 2-name system is based on Latin terms. What is the equation to get the scientific name?
Species name + genus name = scientific name
