Division of Geological Time

Question 1

Is the time when new classes and orders of organisms have evolved to entirely different forms compared to those in the cambrian period

Answer 1

Ordovician Period

Question 2

It was in this eon that Earth’s continental and oceanic crust began to solidify

Answer 2

Hadean Eon

Question 3

The quaternary Period from 1.8 mya - present which includes Pleistocene to the recent time. Which is called

Answer 3

Holocene

Question 4

In the ordovician period, characterized by their lack of jaw, being armored and having no fins

Answer 4

agnathans

Question 5

Condwana moved to the Southern Hemisphere while the smaller continents almost converged at the Northern Hemisphere

Answer 5

Carboniferous Period

Question 6

The end of Creteceous period marked the best-known mass extinction referred to as

Answer 6

K/T (Cretaceous-Tertiary) Extinction

Question 7

This sudden explosion of living organisms during this period is referred as the Cambrian explosion

Answer 7

Cambrian Period

Question 8

During this eon, Earth was molten planet

Answer 8

Hadean Eon

Question 9

The scope of this was separated into eons, era, period, and epochs

Answer 9

Geologic Time

Question 10

Periods in the Phanerozoic Era

Answer 10

Cambrian Period
Ordovician Period
Silurian Period
Devonian Period
Permian Period
Triassic Period
Jurassic Period
Cretaceous Period

Question 11

formed a single world contingent called

Answer 11

Pangea

Question 12

The Geologic Time was separated into

Answer 12

eons, era, period, and epochs

Question 13

Anthracosaurs which appeared late in this period

Answer 13

Permian period

Question 14

the evolution of the jawed and finned marine vertebrates called

Answer 14

gnathostomes

Question 15

plants that are less than 10 centimeters high appeared

Answer 15

Silurian Period

Question 16

multicellularity is evidenced by the fossils of diverse algae and soft-bodied invertebrates which either crawl or stood on the sea floor

Answer 16

Ediacaran Period

Question 17

Small plants have pore- bearing structures called

Answer 17

Sporangia

Question 18

How many mya did the deep freeze last in series of global ice ages

Answer 18

750 and 600 mya

Question 19

The Phanerozoic Eon was divided into (era)

Answer 19

Paleozoic Era, Mesozoic Era, and Cenozoic Era

Question 20

a marine reptile with a dolphin-like appearance

Answer 20

Ichthyosaurs

Question 21

Synapsids gave rise to the therapsids called

Answer 21

mama- like reptiles

Question 22

Pangea separated into two subcontinents

Answer 22

Laurasia at the Northern Hemisphere and Gondwana at the Southern Hemisphere
(mesozoic)

Question 23

In the ordovician period, Marine mammals are either

Answer 23

epifaunal and infaunal

Question 24

Began after the formation of the Earth’s crust, atmosphere, and seas

Answer 24

Archean Eon

Question 25

lasted for about half a billion years, animals have existed and diversified on Earth after a deep freeze in series of global ice ages between 750 and 600 mya

Answer 25

Phanerozoic Eon

Question 26

classified as either amphibians or reptile appeared

Answer 26

anthracosaurs

Question 27

Geological Timeline: Eons

Answer 27

Hadean Eon Archean Eon Proterozoic Eon Phanerozoic Eon

Question 28

the different body plans of animals evolved about this time

Answer 28

blueprint

Question 29

characterized by the accumulation of oxygen in the atmosphere

Answer 29

Proterozoic Eon

Question 30

In the mesozoic era, there were two episodes of extinction called

Answer 30

end-permian mass extinction

Question 31

the first known amniotes called

Answer 31

captorhinomorphs

Question 32

record that depicts Earth's history and the order of life forms from 2500 million years ago (mya) to the present

Answer 32

The Geologic Time Scale

Question 33

The Cenozoic era, divided into

Answer 33

Paleogene period and Neogene period

Question 34

These grazers and suspension feeders or scavengers are called the

Answer 34

Edicaran fauna

Question 35

Mosses, liverworts, and tracheophytes evolved from the marine green algae called

Answer 35

Chlorophyta