Q3: History of Life on Earth II - Mesozoic and Cenozoic Era

Question 1

This era is known as ‘Middle Life’, started more than 252 mil. yrs. ago and lasted until 66 mil. yrs. ago.

Answer 1

mesozoic era

Question 2

Three geological periods of the mesozoic

Answer 2

• triassic
• jurassic
• cretaceous

Question 3

The mesozoic era is considered as the Age of ____________ and Age of ____________.

Answer 3

• Dinosaurs
• Conifers

Question 4

Which group of organisms dominated the triassic period?

Answer 4

• therapsids
• thecodonts

Question 5

They are sometimes referred to as “mammal-like reptiles.”

Answer 5

therapsids

Question 6

The ancestors of dinosaurs and crocodiles, together with lizards, turtles, flying pterosaurs, and the first true mammals.

Answer 6

thecodonts

Question 7

These organisms became a dominant group in the triassic period.

Answer 7

mollusks

Question 8

In which period did fishes, sharks, and marine reptiles such as plesiosaurs, nothosaurs, and ichthyosaurs started to swim in the seas.

Answer 8

triassic period

Question 9

Which period did feathered dinosaurs first appear?

Answer 9

jurrasic period

Question 10

These organisms dominated the jurassic period.

Answer 10

• sauropods
• theropods

Question 11

This period is when the first true coral was formed.

Answer 11

jurassic period

Question 12

Which plant dominated the jurrassic period?

Answer 12

cycads

Question 13

These jurassic animals were characterized by their long necks and tails.

Answer 13

sauropods

Question 14

These jurassic organisms are bipedal carnivorous dinosaurs.

Answer 14

theropods

Question 15

In this period, which lasted from 144 mil. yrs. ago until 65 mil. yrs. ago, the terrestrial environment was dominated by the dinosaurs.

Answer 15

cretaceous period

Question 16

Which period did flowering trees and placental mammals appeared?

Answer 16

cretaceous period

Question 17

Types of dinosaurs during the cretaceous period

Answer 17

• duck-billed Hadrosaurs
• horned ceratopsians

Question 18

It is known as ‘Recent Life’, started more than 66 mil. yrs. ago and is continuing today.

Answer 18

cenozoic era

Question 19

It is considered as the Age of Birds and Mammals.

Answer 19

cenozoic era

Question 20

2 geological periods of the cenozoic era

Answer 20

paleogene
neogene

Question 21

7 geological epochs of the cenozoic era

Answer 21

• paleocene
• eocene
• oligocene
• miocene
• pliocene
• pleistocene
• holocene

Question 22

5 mass extinction

Answer 22

• Ordovician-Silurian Extinction
• Devonian Extinction
• Permian-Triassic Extinction
• Triassic-Jurassic Extinction
• Cretaceous-tertiary Extinction

Question 23

This event took place 200 million years ago, eliminating about 80% of Earth’s species, including many types of dinosaurs.

Answer 23

Triassic Mass Extinction

Question 24

The probable cause of the triassic mass extinction which have brought increased carbon dioxide levels and global temperatures, as well as ocean acidification.

Answer 24

colossal geological activity

Question 25

This event occurred 65 million years ago, killing 78% of all species, including the remaining non-avian dinosaurs.

Answer 25

Cretaceous mass extinction

Question 26

The most likely cause of the cretaceous mass extinction.

Answer 26

asteroid hitting the Earth

Question 27

# Triassic, Jurassic, or Cretaceous therapsids

Answer 27

Triassic

Question 28

# Triassic, Jurassic, or Cretaceous thecodonts

Answer 28

Triassic

Question 29

# Triassic, Jurassic, or Cretaceous Sauropods

Answer 29

Jurrasic

Question 30

# Triassic, Jurassic, or Cretaceous Theropods

Answer 30

Jurassic

Question 31

# Triassic, Jurassic, or Cretaceous Feathered dinosaur

Answer 31

Jurassic

Question 32

# Triassic, Jurassic, or Cretaceous first true coral

Answer 32

Jurassic

Question 33

# Triassic, Jurassic, or Cretaceous Tyrannosaurus rex

Answer 33

Cretaceous

Question 34

# Triassic, Jurassic, or Cretaceous flowering trees

Answer 34

cretaceous

Question 35

catlike and doglike animals

Answer 35

creodonts

Question 36

the first horse

Answer 36

eohippus

Question 37

odd-toed ungulates

Answer 37

Perissodactyls

Question 38

even-toed ungulates

Answer 38

Artiodactyls

Question 39

humanlike apes

Answer 39

Dryopithecines

Question 40

First hominids

Answer 40

australopithecines

Question 41

what epoch did the ice age began?

Answer 41

Pliocene

Question 42

This epoch is sometimes referred to as the "Great Ice Age" because of the extensive glaciation that occurred during this time.

Answer 42

Pleistocene