EVOLUTION Q3

Question 1

the change in inherited traits over successive generations in populations of organisms. This change allowed organisms to adapt and survive in their environment.

Answer 1

Evolution

Question 2

What are the four evidences of evolution?

Answer 2

Fossil Records
Comparative Anatomy
Embryonic Development
Genetic Information

Question 3

These are traces of organisms that lived in the past and were preserved by natural process of catastrophic events.

Answer 3

Fossil records

Question 4

Where are fossils usually found in?

Answer 4

sedimentary rocks

Question 5

Two main types of Fossils

Answer 5

Imprints
Compressions

Question 6

This fossil has a shallow external mold left by animal or plant tissues with little or no organic materials present.

Answer 6

Imprints

Question 7

These are animal or plant tissues preserved in sedimentary rocks and is informed with more organic material.

Answer 7

Compressions

Question 8

What are the two ways of how ages of fossils are determined?

Answer 8

Relative Dating
Radiometric Dating

Question 9

This is when the age of a rock is compared to the other rock layers. oldest layer = deepest, youngest layer = shallower.

Answer 9

Relative Dating

Question 10

This method is used to determine the age of rocks using the decay of radioactive isotopes of Carbon-14 which is present in rocks when the organisms died.

Answer 10

Radiometric Dating

Question 11

The study of the similarities and differences in the structures of different species.

Answer 11

Comparative Anatomy

Question 12

What are the types of structures in comparative anatomy.

Answer 12

Homologous Structure
Divergent Evolution
Analogous Structure
Convergent Evolution
Vestigial Structure

Question 13

Body parts of organisms that may perform different functions but are of the same origin. The presence of homologous structures is a strong evolved from common ancestors.

Answer 13

Homologous Structures

Question 14

This simply tells us that all those specific species have common ancestors, they adapt different traits. ex. zebras, donkeys and horses are related.

Answer 14

Divergent Evolution

Question 15

Body parts of organisms that may perform the same function but are of the different origin. ex. bird wings, insects, wings and bat wings.

Answer 15

Analogous

Question 16

Two different species evolve similar traits despite having distinct ancestors. ex. bats and whales use echolocation.

Answer 16

Convergent Evolution

Question 17

Body parts that are useless or left over from previous ancestors in which they were useful. ex. Ostrich have wings, whales still have pelvic bones, humans have appendix.

Answer 17

Vestigial Structure

Question 18

The portion of the life that begins just after fertilization. Many organisms have similar embryos supporting the idea of common ancestors.

Answer 18

Embryonic Development

Question 19

Small mutations or changes in the DNA eventually lead to the evolution of new species.

Answer 19

Genetic Information

Question 20

How many chromsomes has a normal human being have compared to a normal chimpanzee.

Answer 20

humans have 46 chromosomes while chimpanzees have 48