Levels of Organization
What describes the hierarchical structure of life?
Levels of biological organization.
What is the primary function of the respiratory system?
Taking in oxygen
What is sexual reproduction?
The process of two parents creating an offspring with genetic differences.
What is natural selection?
A selection that happens in nature without human involvement.
What is a common characteristic of animals?
Multicellular, eukaryotic, and heterotrophic.
What is the smallest unit of life?
The cell
Which organ is responsible for pumping blood throughout the body?
The heart
What is fertilization?
The process where a male and female egg cells form a fertilized egg.
What is artificial selection?
A selection controlled by humans to choose specific traits.
Is fungi more closely related to plants or animals?
Animals.
What level of organization is made of different tissues working together to perform a function?
An organ
What is the main role of the skeletal system?
Provide support and protection
What is binary fission?
A type of asexual reproduction where a single cell organism reproduces an identical version of themselves.
What is another natural selection?
The process that leads to traits that help survive and reproduce in their environment.
Where are archae often found?
In extreme environments
What level includes all the organisms living in a septic area?
A community
Which system is responsible for breaking down food into nutrients?
The digestive system
What is budding?
Another asexual reproduction which a new organisms develops an outgrowth or bud.
What is another artificial selection?
Humans selecting certain living organisms to reproduce more of a certain trait.
What is the difference between bacteria and other kingdoms?
Bacteria are prokaryotic
What is the highest level of organization that includes all the ecosystems on Earth?
A biosphere
What are the basic functional units of the nervous system called?
Neurons
What is fragmentation?
A sexual reproduction where a body part is lost and then ends up in another organism.
What is the definition of artificial selection?
When humans choose which plants or animals get to reproduce.
Which kingdom is believed to have evolved first?
Bacteria Archae