5.4 Evolution – summary of mark schemes
... theory put forward by Darwin / Wallace; overproduction of offspring; more are produced that the environment can support; resources are limited; leads to struggle for survival; variation exists / (random) mutations give rise to variation; some varieties better adapted than others; best adapted surviv ...
... theory put forward by Darwin / Wallace; overproduction of offspring; more are produced that the environment can support; resources are limited; leads to struggle for survival; variation exists / (random) mutations give rise to variation; some varieties better adapted than others; best adapted surviv ...
Lamarck vs. Darwin ppt
... from parents to offspring and that genes cannot be affected by the outside world. – The only thing that can be affected is which gene sets there are in a population and this is determined by which organisms dies and which ones live. ...
... from parents to offspring and that genes cannot be affected by the outside world. – The only thing that can be affected is which gene sets there are in a population and this is determined by which organisms dies and which ones live. ...
Biology Concepts to Study
... B. PLANTAE: sessile, multicellular, eukaryotic producers. C. FUNGI: sessile, multicellular, eukaryotic decomposers. D. PROTISTA: unicellular eukaryotes, which may be producers or consumers. E. MONERA: unicellular prokaryotes, which may be producers, consumers, or decomposers. F. ARCHAEBACTERIA: unic ...
... B. PLANTAE: sessile, multicellular, eukaryotic producers. C. FUNGI: sessile, multicellular, eukaryotic decomposers. D. PROTISTA: unicellular eukaryotes, which may be producers or consumers. E. MONERA: unicellular prokaryotes, which may be producers, consumers, or decomposers. F. ARCHAEBACTERIA: unic ...
UNIT THREE – STUDY GUIDE
... When using radiometric dating you are assuming the amount of isotope at formation was what percent? If an isotope had a half life of 5, 370 years, how old is the sample if 75% of the original material is still present? If 50% of the original material is still present? If only 25% of the original mat ...
... When using radiometric dating you are assuming the amount of isotope at formation was what percent? If an isotope had a half life of 5, 370 years, how old is the sample if 75% of the original material is still present? If 50% of the original material is still present? If only 25% of the original mat ...
document
... • Mechanical weathering – also called physical weathering; rocks are broken apart by a physical force (ice wedging, abrasion, plant action) • Chemical weathering – changes the chemical makeup of rocks and minerals (oxidation, dissolving by acids) ...
... • Mechanical weathering – also called physical weathering; rocks are broken apart by a physical force (ice wedging, abrasion, plant action) • Chemical weathering – changes the chemical makeup of rocks and minerals (oxidation, dissolving by acids) ...
Chapter 5: Expert Questions What are the five pieces of evidence for
... 1. What are the five pieces of evidence for evolution? Describe how each one proves evolution. a. Fossils - Fossil record shows how some species have changed over time. b. Homologous Structures - Body parts are similar in related animals so there must be a common ancestor. c. Vestigial Structures - ...
... 1. What are the five pieces of evidence for evolution? Describe how each one proves evolution. a. Fossils - Fossil record shows how some species have changed over time. b. Homologous Structures - Body parts are similar in related animals so there must be a common ancestor. c. Vestigial Structures - ...
Chapter 3 Test Review
... environment and combine it with water in the presence of sunlight. (84) 21. Earth's ____________________ consists of all the planet's living or once-living things and the nonliving parts of the environment with which they interact. (79) 23. In a process called ____________________, the addition of p ...
... environment and combine it with water in the presence of sunlight. (84) 21. Earth's ____________________ consists of all the planet's living or once-living things and the nonliving parts of the environment with which they interact. (79) 23. In a process called ____________________, the addition of p ...
Evolution - Southmoreland School District
... • Geographic Isolation – Occurs when a small part of the population becomes separated; over generations, different variations become more common ...
... • Geographic Isolation – Occurs when a small part of the population becomes separated; over generations, different variations become more common ...
15-1 The Puzzle of Life`s Diversity
... » Australia, Kangaroos, but No Rabbits » S. America, Llamas ...
... » Australia, Kangaroos, but No Rabbits » S. America, Llamas ...
B. Digestive System
... consequences for the ecosystem (and humans too). H. The negative effects humans have had on the environment are all mostly due to the increasing human population. I. ___________________________________ refers to the variety of life on earth. As habitats are lost and species become extinct, biodivers ...
... consequences for the ecosystem (and humans too). H. The negative effects humans have had on the environment are all mostly due to the increasing human population. I. ___________________________________ refers to the variety of life on earth. As habitats are lost and species become extinct, biodivers ...
evolution COB questions
... a. comparative anatomy: forelegs, wings, flippers, and arms are variations that evolved from a common ancestor – homologous structures; humans will probably have back or knee problems because knee joint and spine came from 4 legged mammals; vestigial organs: remains of structures that had function i ...
... a. comparative anatomy: forelegs, wings, flippers, and arms are variations that evolved from a common ancestor – homologous structures; humans will probably have back or knee problems because knee joint and spine came from 4 legged mammals; vestigial organs: remains of structures that had function i ...
NATURAL SELECTION This is
... single common ancestor. A singlecelled organism that lived in the water. As time went forward, that organism changed and evolved and became different things, depending on the environment. Groups formed. One group stayed the same, the other groups changed and became different organisms. This happened ...
... single common ancestor. A singlecelled organism that lived in the water. As time went forward, that organism changed and evolved and became different things, depending on the environment. Groups formed. One group stayed the same, the other groups changed and became different organisms. This happened ...
Unity and Diversity
... 3) Growth and development 4) Energy processing 5) Response to the environment 6) Regulation 7) Evolutionary adaptation all the environments on Earth that are inhabited by life land and water such as oceans, lakes, and rivers; it also includes the atmosphere all living things in a particular area, al ...
... 3) Growth and development 4) Energy processing 5) Response to the environment 6) Regulation 7) Evolutionary adaptation all the environments on Earth that are inhabited by life land and water such as oceans, lakes, and rivers; it also includes the atmosphere all living things in a particular area, al ...
DOMAINS AND KINGDOMS
... of energy and carbon source (chemoheterotrophs). These are saprobes and release enzymes to absorb food from outside. Besides fungi these are the main decomposers. Cyanobacteria have Chlorophyll a for photosynthesis like algae and plants (photoautotrophs). Others use hydrogen sulfide instead of water ...
... of energy and carbon source (chemoheterotrophs). These are saprobes and release enzymes to absorb food from outside. Besides fungi these are the main decomposers. Cyanobacteria have Chlorophyll a for photosynthesis like algae and plants (photoautotrophs). Others use hydrogen sulfide instead of water ...
Evolution
... ____ 19. Which term refers to similar structures that related species have inherited from a common ancestor? a. DNA sequences b. developmental organisms c. homologous structures d. punctuated equilibria ____ 20. If two organisms look very similar during their early stages, this is evidence that the ...
... ____ 19. Which term refers to similar structures that related species have inherited from a common ancestor? a. DNA sequences b. developmental organisms c. homologous structures d. punctuated equilibria ____ 20. If two organisms look very similar during their early stages, this is evidence that the ...
Exam Review
... – Theory initially proposed independently by two different scientists in 1920’s – Suggested that first life forms arose spontaneously once the first organic molecules were made in “primordial soup” ...
... – Theory initially proposed independently by two different scientists in 1920’s – Suggested that first life forms arose spontaneously once the first organic molecules were made in “primordial soup” ...
Descent with Modification: A Darwinian View of Life
... all organisms related through descent from an ancestor that lived in the remote past. As descendants from that ancestor moved to different environments, they had to adapt – Most branches in evolution are dead ends – 99% of all species that have ever lived are extinct, so no gap or link species exist ...
... all organisms related through descent from an ancestor that lived in the remote past. As descendants from that ancestor moved to different environments, they had to adapt – Most branches in evolution are dead ends – 99% of all species that have ever lived are extinct, so no gap or link species exist ...
The Theory of Evolution
... their beak. His observations lead to the conclusion that all the finches were descendents of the same original population. The shape of the beaks were adaptations for eating a particular type of food (Ex. long beaks were used for eating insects, short for seeds) ...
... their beak. His observations lead to the conclusion that all the finches were descendents of the same original population. The shape of the beaks were adaptations for eating a particular type of food (Ex. long beaks were used for eating insects, short for seeds) ...
To return to the chapter summary click escape or close this document.
... Darwin’s Application of Malthus – Organisms produce more offspring than can survive – This produces a struggle for existence – Each member has variations – Those with variations that give the organism an advantage will have the best chance for survival = “survival of the fittest” ...
... Darwin’s Application of Malthus – Organisms produce more offspring than can survive – This produces a struggle for existence – Each member has variations – Those with variations that give the organism an advantage will have the best chance for survival = “survival of the fittest” ...
What is an Organism??
... • Ecosystems are communities of living things and their environments • Humans really interact with the environment ...
... • Ecosystems are communities of living things and their environments • Humans really interact with the environment ...
Chapter 15s-2015
... 2. Embryos of different species are strikingly similar in the early stages 3. Look at figure 15.9 on pg 426notice how similar the embryos are 4. In each embryo there are pharyngeal pouches, BUT they will become different structures in each organism 5. When features are shared in embryossuggests th ...
... 2. Embryos of different species are strikingly similar in the early stages 3. Look at figure 15.9 on pg 426notice how similar the embryos are 4. In each embryo there are pharyngeal pouches, BUT they will become different structures in each organism 5. When features are shared in embryossuggests th ...
Outline 7
... • Regular extinction, also called background extinction, takes place as environments change over time. Natural selection removes species that cannot adapt. • Mass extinction take place when large scale environmental catastrophes occur. Environmental change is too extreme for species to adapt by natu ...
... • Regular extinction, also called background extinction, takes place as environments change over time. Natural selection removes species that cannot adapt. • Mass extinction take place when large scale environmental catastrophes occur. Environmental change is too extreme for species to adapt by natu ...
Ch. 19 Outline - Cloudfront.net
... Might have practiced sexual reproduction since some cells might have become specialized to produce gametes. Oldest soft-bodied invertebrates appear at about 600 mya (0.6 bya). Ediacaran fossils – many are quite bizarre animals. Disappeared by 545 mya. ...
... Might have practiced sexual reproduction since some cells might have become specialized to produce gametes. Oldest soft-bodied invertebrates appear at about 600 mya (0.6 bya). Ediacaran fossils – many are quite bizarre animals. Disappeared by 545 mya. ...
Presentation
... Most organisms are decomposed quickly after death. If they are transported to sites with no oxygen, where decomposition is very slow, fossilization could occur. Many geologic processes transform rocks and destroy the fossils they contain. ...
... Most organisms are decomposed quickly after death. If they are transported to sites with no oxygen, where decomposition is very slow, fossilization could occur. Many geologic processes transform rocks and destroy the fossils they contain. ...
Evolutionary history of life
The evolutionary history of life on Earth traces the processes by which living and fossil organisms have evolved since life appeared on the planet, until the present day. Earth formed about 4.5 Ga (billion years ago) and life appeared on its surface within 1 billion years. The similarities between all present-day organisms indicate the presence of a common ancestor from which all known species have diverged through the process of evolution. More than 99 percent of all species, amounting to over five billion species, that ever lived on Earth are estimated to be extinct. Estimates on the number of Earth's current species range from 10 million to 14 million, of which about 1.2 million have been documented and over 86 percent have not yet been described.