Biology · Geography

Fossils and Geological Eras

1,078 Questions

Fossils and geological eras provide a window into the history of the Earth. This topic covers prehistoric life, mass extinctions, and the geological time scale. It is an important part of the general science syllabus for many aptitude tests.

Geological time scaleTypes of fossilsPrehistoric lifeAncient climates

Fossils and Geological Eras Questions

Multiple choice

Fossils are the?

  1. kind of natural resource

  2. living beings

  3. coal mines

  4. Dead remains of living organisms
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Fossils are the preserved remains, impressions, or traces of ancient living organisms that have been buried in sediment.

Multiple choice landforms of the earth and internal forces general physical geography general knowledge

Land forms that we see today is the result of millions of years of endogenetic and exogenetic forces working together. With respect to geologic time scale, choose the correct statements.
(1) There have been 9 or more orogenic phases.
(2) Alpine is the most recent geologic period of orogeny.
(3) Caledonian and Hercynian are also a geologic time period of orogeny.
(4) Urals, Pennines, Applachians belong to Hercynian period.
(5) Alps, Himalayas, Andes and Rockies belong to Alpine period.

  1. 1, 3 and 5

  2. 1, 2 and 4

  3. 1, 2, 3 and 4

  4. All of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

All statements are correct regarding the geologic time scale and orogenic phases: there are multiple phases, Alpine is the most recent, and the listed mountain ranges are correctly categorized by their respective orogenic periods.

Multiple choice

What is the role of fossils in supporting the theory of evolution?

  1. There are not enough fossils to support this theory

  2. There are plenty of fossils to show that animals have evolved, but there ar

  3. There have been many fossils of intermediate types discovered that provide

  4. show that other types of life existed, but there is no evidence of relation
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Fossils of transitional or intermediate forms provide strong evidence for evolution by showing links between groups (e.g., whale ancestors, bird-dinosaur transitions). These fossils document evolutionary changes over time.

Multiple choice zoology animal diversity - ii (phylum: chordata) amphibia and reptilia amphibia classifications of chordata

Living fossil lizard of New Zeal and/Sphenodon belongs to___________.

  1. Rhyncocephalia

  2. Squamata

  3. Chelonia

  4. Crocodilia
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Living fossil lizard of new zeal and sphenodon belongs to Rhyncocephalia. The single species of Tuatara is the only surmising member of its order, which flourished around 200 million years ago.

Multiple choice zoology animal diversity - ii (phylum: chordata) amphibia and reptilia amphibia classifications of chordata

The extinct reptiles without temporal fossae belong to ______________.

  1. Chelonia

  2. Synaptosauria

  3. Ichthyopterygia

  4. Cotylosauria
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Cotylosauria, often called stem reptiles, are the most primitive reptiles and are characterized by an anapsid skull, meaning they lack temporal fossae. Chelonia (turtles) also have anapsid skulls, but Cotylosauria is the broader ancestral group typically associated with this definition in evolutionary biology contexts.

Multiple choice zoology animal diversity - ii (phylum: chordata) amphibia and reptilia amphibia classifications of chordata

Marine dinosaur included 

  1. Ichthyosaurus and Plesiosaurus

  2. Pelycosaurs

  3. Tyrannosaurus

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Ichthyosaurus are the ancient animals. These are marine reptiles. This is a genus of ichthyosaurs from the late triassic and early jurassic period. They are the best known ichthyosaur genera, with the Order Ichthyosauria. Ichthyosaurus was the first complete fossil to be discovered in the early 19th century. The fossil was found in England. Plesiosaurus was a genus of large marine sauropterygian reptile. They lived during the early part of the Jurassic Period. They are known by skeletons as fossils from England.

Thus, the correct answer is option A. 

Multiple choice

How can fossil evidence help paleoecologists understand ancient ecosystems?

  1. It can provide information about the types of organisms that lived in the ecosystem.

  2. It can provide information about the interactions between organisms in the ecosystem.

  3. It can provide information about the climate and environment of the ecosystem.

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Fossil evidence can provide information about the types of organisms that lived in the ecosystem, the interactions between organisms in the ecosystem, and the climate and environment of the ecosystem.

Multiple choice

The Chicxulub impact, which is believed to have caused the extinction of the dinosaurs, occurred approximately how many years ago?

  1. 65 million years ago

  2. 100 million years ago

  3. 250 million years ago

  4. 500 million years ago
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The Chicxulub impact occurred approximately 65 million years ago, at the end of the Cretaceous period.

Multiple choice

The Permian-Triassic extinction event, which is considered to be the most severe mass extinction event in Earth's history, is estimated to have killed what percentage of all marine species?

  1. 50%

  2. 75%

  3. 90%

  4. 95%
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The Permian-Triassic extinction event is estimated to have killed approximately 95% of all marine species.

Multiple choice

Which of the following is NOT a pattern that has been observed in mass extinction events?

  1. They tend to occur in clusters

  2. They are more common during periods of high global temperatures

  3. They are more common during periods of low sea levels

  4. They are more common during periods of high atmospheric oxygen levels
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Mass extinction events are not more common during periods of high atmospheric oxygen levels.