unit b evolution part 2

Question 1

what are transitional fossils

Answer 1

type of direct evidence
-show intermediary links between organisms

Question 2

what is biogeography?

Answer 2

type of direct evidence
-study of past and present geographical distrubution of life on earth

Question 3

what is the Pangea?

Answer 3

type of direct evidence
-supercontinent-> fossils of the same species have been found in other continents suggesting that these continent were joined

Question 4

what is adaptive radiation?

Answer 4

type of direct evidence
-animals found on islands closley resemble those found in the nearest continent

Question 5

what is embryology?

Answer 5

type of indirect evidence
- species all look similar in early phases of life

Question 6

what is a homologous structure?

Answer 6

type of indrect evidence
-structures are similar in structure but not function

Question 7

what is divergent evolution?

Answer 7

development of different forms or sturctures in related species due to adaption to different environments

Question 8

what is a analoguys structure?

Answer 8

type of indirect evidence
-structures are similar in functions but not structure

Question 9

what is convergent evolution?

Answer 9

development of a similar form is unrelated in species due to adaption to similar environments

Question 10

what are vestigial structures?

Answer 10

structures that have no apparent function
-residual parts from ancestor