Organisms in this kingdom reproduce asexually most of the time.
What is bacteria?
100
When two organisms have very similiar DNA it is proof of this.
What is that they are closely related?
100
This body system contains vascular tissue such as veins and arteries.
What is the circulatory system?
100
10% represents this in ecology.
What is the amount of energy passed from between levels of a food chain.
100
Autotroph is to heterotroph as these two terms are to each other.
What is producer to consumer?
200
Members of this kingdom have organelles, come in a wide variety of shapes and sizes, and may be uni or multicellular.
What is Kingdom Protista?
200
This remanent of an organ from an early ancestor that is reduced in function provides evidence that a species has evolved.
What is a vestigial organ?
200
Your kidneys and bladder make up your excretory system. In addition to cleaning the blood, the excretory is responsible for regulating the levels of this basic bodily substance.
What is fluid (or water)?
200
Herbivores are animals that do this.
What is something that feeds only on plants?
200
This condition, which is beyond human control, can be cause wetland loss.
What is a drought?
300
This part of a plant cell is composed of the fibrous sugar called cellulose.
What is the cell wall?
300
This large bird has wings that are considered vestigial because it can't fly.
What is an ostrich?
300
A horse sweating after a long ride is an example of an organism maintaining this important state.
What is homeostasis?
300
This is what occurs with the birthrate becomes higher than the death rate.
What is population growth?
300
This body system is similar to a subway system in a large city.
What is the circulatory system?
400
A bacteria named bacillus anthracis would be shaped thusly.
What is rod-shaped?
400
In this process, the environment (nature) serves as the selective agent, determining which species survive and evolve because they have positive adaptations.
What is natural selection?
400
A human heart and a human brain each occupy which level of organization?
What is organ?
400
Lack of water in a desert is an example of this.
What is limiting factor.
400
The term for organisms that can successfully reproduce fertile offspring together.
What is species?
500
The bacteria streptococcus commonly causes strep throat. Under a microscope, it groups together (streptococci) in this shape.
What is chains of round cells?
500
In the event of a rapidly changing environment, like those caused by large-scale natural disasters, the species most likely to survive is the one that has the most of this critical trait.
What is genetic variation?
500
When a disease is spread among friends, family, and coworkers it is evidence that the disease is caused by this.
What is a pathogen?
500
The movement of living things into an area that has never been occupied by living things is called this.
What is primary succession?
500
The development by scientists of a new color in a rose is an example of this evolutionary concept.