Lesson 3 - Evidence Of Evolution

Question 1

Incrustation

Answer 1

Dissolved minerals in water form a thin crust in whatever lies in it.

Question 2

Tar Impregnation

Answer 2

Animals become caught in pits of tar (Such as La Brae outside Los Angeles)

Question 3

Amber Entombment

Answer 3

Insects may become trapped in resin which hardens into amber.

Question 4

Refrigeration

Answer 4

During the ice age, animals like the wooly mammoth became trapped in ice.

Question 5

Mummification

Answer 5

In very arid regions, animals may dry out and quickly become preserved.

Question 6

Petrified Wood

Answer 6

When organic tree tissue is buried and mineralized, turning into rock.

Question 7

Molds

Answer 7

Animal tracks preserved into rocks may be termed external molds. Internal molds are usually of shells.

Question 8

Burrows

Answer 8

Worms and other invertebrates burrow into wood, shells, and sand. These burrows created are preserved into whatever they burrowed into.

Question 9

Gastroliths

Answer 9

Smooth, polished stones that helped dinosaurs grind up vegetable matter in their stomachs.

Question 10

Coprolites

Answer 10

Fossil excrement (poop) that can give definitive knowledge about the diet of the animal concerned.

Question 11

Homologous structures

Answer 11

SIMILAR structures doing very DIFFERENT functions

Question 12

Analogous structures

Answer 12

DIFFERENT structures doing SIMILAR functions

Question 13

Vestigial structures

Answer 13

Structures with NO functions in one organism, but have a functions in similar organisms (e.g. tailbone in human is a non-functioning structure)