Evolution and Diversity of Organisms

Question 1

Name the geological eons of evolution

Answer 1

Hadean
Archean
Proterozoic
Phanerozoic

Question 2

What are the eras the phanerozoic eon covers?

Answer 2

Paleozoic
Mesozoic
Cenozoic

Question 3

Write the features of hadean eon

Answer 3

Origin of earth

Question 4

Write the features of Archean eon

Answer 4

• oldest known rocks on earth’s surface
• oldest fossils of cells (prokaryotes) appeared
• concentration of atmospheric oxygen begins to increase

Question 5

Write the features of Proterozoic eon

Answer 5

• diverse algae and soft bodied invertebrate animals appeared
• oldest fossils of eukaryotic cells appeared

Question 6

write the features of Paleozoic era

Answer 6

1. sudden increase in diversity of many animal phyla
2. Marine algae becomes abundant, colonization of land by diverse fungi, plants and animals
3. Diversification of vascular plants
4. Diversification of early vascular plants
5. Diversification of bony fishes, first tetrapods and insects appeared
6. Extensive forests of vascular plants
7. First seed plants appeared
8. Amphibians dominated
9. Origin and radiation of reptiles
10. Origin of most present day groups of insects
11. Extinction of many marine and terrestrial organisms

Question 7

what species dominated in paleozoic era?

Answer 7

Amphibians dominated

Question 8

what era did the “sudden increase in diversity of many animal phyla” occur?

Answer 8

paleozoic era

Question 9

what era did “marine algae becomes abundant, colonization of land by diverse fungi, plants and animals” occur?

Answer 9

paleozoic era

Question 10

what era did the “diversification of vascular plants” occur?

Answer 10

paleozoic era

Question 11

which era did the “diversification of early vascular plants” occur?

Answer 11

paleozoic era

Question 12

which era did the “ diversification of bony fishes, first tetrapods and insects appeared” occur?

Answer 12

paleozoic era

Question 13

which era did the “extensive forests of vascular plants” appear?

Answer 13

paleozoic era

Question 14

when did the “first seed plants” appear?

Answer 14

paleozoic era

Question 15

when did the first origin and radiation of reptiles occur?

Answer 15

paleozoic era?

Question 16

when did the origin of most present day groups of insects occur?

Answer 16

paleozoic era

Question 17

when did the extinction of many marine and terrestrial organisms occur?

Answer 17

paleozoic era

Question 18

Write the features of Mesozoic era

Answer 18

1. cone bearing plants (gymnosperms) dominated
2. dinosaurs evolved and radiated
3. origin of mammals
4. gymnosperms continued to be as dominant plants, dinosaurs dominated, abundant and diverse
5. flowering plants (angiosperms) appeared and diversified, many organisms including dinosaurs become extinct

Question 19

What were the dominant plants in mesozoic era?

Answer 19

gymnosperms

Question 20

in which era did cone bearing plants (gymnosperms) dominate?

Answer 20

mesozoic era

Question 21

in which era did dinosaurs evolve and radiate?

Answer 21

mesozoic era

Question 22

when did the origin of mammals take place?

Answer 22

mesozoic era

Question 23

in which era did gymnosperms continue to be as dominant plants, and dinosaurs dominated, abundant and diverse?

Answer 23

mesozoic era

Question 24

in which era did flowering plants (angiosperms) appear and diversified, and many organisms including dinosaurs became extinct?

Answer 24

mesozoic era

Question 25

write the common features of Cenozoic era

Answer 25

1. major radiation of mammals, birds and pollinating insects
2. dominance of angiosperms increased and their radiation continued, radiation of most present day mammalian orders.
3. origin of many primate groups, continued radiation of mammals and angiosperms, earliest direct human ancestors
4. appearance of bipedal human ancestors
5. origin of genus homo

Question 26

which species dominated Cenozoic era?

Answer 26

angiosperms

Question 27

when did the major radiation of mammals, birds and pollinating insects occur?

Answer 27

cenozoic era

Question 28

when did dominance of angiosperms increase and their radiation continued, radiation of most present day mammalian orders occur?

Answer 28

cenozoic era

Question 29

when did origin of many primate groups, continued radiation of mammals and angiosperms, earliest direct human ancestors occur?

Answer 29

cenozoic era

Question 30

which era did appearance of bipedal human ancestors take place?

Answer 30

cenozoic era

Question 31

when did the origin of genus homo occur

Answer 31

cenozoic era

Question 32

What is evolution?

Answer 32

A change is genetic composition of a population from generation to generation (descent with modification) over a long period of time

Question 33

How long can evolution take?

Answer 33

millions of years

Question 34

what are the theories of evolution?

Answer 34

1. theory of Lamarck
2. Darwin- Wallace theory (theory of natural evolution)
3. Neo-Darwinism