Good link http://click4biology.info/c4b/5/eco5.4.htm
The evidence in the diagram is an example of:
a) Biochemistry
Bio chemistry is looking at the chemicals that make up living organisms, and the chemical reations used as they live. In evolution, biochemical reactions have changed as the environment changed.
b) Bio geography
Biogeography looks at the influence of geographic areas, the enviroment in that area. We have tropical fish near the equator, and Polar bears at the poles. Animals in certain places become isolated and cut off as continents separate. The unique marsupials of Australia have evolved in isolation to the placental animals of other continents.
c) Comparative anatomy
This is correct answer, the same basic blue print has been adapted to different evolutionary needs. Anatomy is the science of looking at body parts.
d) Comparative embryology
Embryology means looking at the embryo, or egg that has just been fertilized and is transitioning from a ball of cells to the final organism. All embryo look very similar in the first weeks after being fertilized with sperm
Each of the limbs show the same basic pattern. This has been caused by:
a) adaptations to similar environments
This is not the correct answer. Mans upper limb hand has evolved from times spent swinging in trees, while birds have used the same basic design to fly with
b) All the vertebrates belonging to the same species
This is incorrect. Vertebrate means having a backbone. Fish, birds, amphibians, Mammals and Reptiles all have backbones, and with in these groups there are many species.
c) evolution from a common ancestor
Indeed there are fossil fish that have crawled on land and the basic design has been adapted to different purposes.
d) adaptation to the same basic function.
Adaptation is the modification of a trait through variation down the generations. A basic funtion would mean walking, while another would be flying ie not the same
