an internal system of tube like structures through which water and good move inside the plant
What contributions did Carolus Linnaeus make to the field of taxonomy?
He came up with the naming and subgrouping system
Major characteristics used to classify organisms into kingdoms
If the organism is...unicellular or multicelluar...autotroph or heterotrpoh...prokaryote or eukaryote
How do bacteria survive without a nucleus?
because the genetic material in their cells isnt contained in the nucleus
Functions of the circulatory system
Transports oxegen, carbon dioxide, nutrients, wastes, hormones, and enzymes...regulates body temperature...clots blood to prevent fluid loss...and fights illness'
The pulmonary artery is different than all the others because...
it's the only one that carries deoxegenated blood
the pulmonary vein is different than all the other veins because...
it's the only one that carries oxegenated blood
What can be learned from fossils?
about organisms that're extinct and about how and when a new organism evolved
Compare punctuated equilibria and gradualism
Gradualism states that evolution occurs slowly but steadily and that tiny changes gradually add up to major changes over a long period of time white punctuated equilibria states that species evolve during short periods of rapid change. There are also times of no change. Also, species evolve quicker when isolated (ex. continental drift.)
Preserved Remains-how they're formed
when an organism is preserved in a substance such as ice, tar, or sap
What role did Darwin play on the Beagle?
He was the naturalist, and he had to learn as much as he could about the living things he saw on the voyage.
What contributions did Aristotle make to the field of taxonomy?
He classified organisms into 3 groups...land dwellers, sea dwellers, and air dwellers
the amount of energy needed to raise the temperature of one gram of water by one celcius degree
The process by which individuals that are better adapted to their environment are more likely to survive and reproduce then other members of the same species
4 factors that may contribute to Natural Selection
Functions of the salivary glands
mixes pieces of food and moisturizes them...breaks down starch...makes saliva
Function of the large intestine
Absorbs water from food and the remaining material is removed from the body
The structure of the virus
Has two parts...outer protein coat that protects the ring and an inner core made out of genetic material
3 ways that seeds are dispersed
through...animals digestive systems, hooking on animal fur, the ocean or winds
Skins job in the excretory system
Part of the sweating process because when we sweat we excrete salt and water
Why are organisms classified into groups?
Because once an organism is classified, a scientist knows a lot about that organism and this makes it easier to study them
producing organisms that have exactly the same genes as the organism from which it was produced
clean the environment, make food and antibiotics, aids in food digestion, aids in fuel production, decompose, and help make natural gas
What contributions did the microscope make to the field of taxonomy?
allowed scientists to discover microscopic life and to observe whether cells have chlorophyll or nuclei