Biology · Geography

Fossils and Geological Eras

1,140 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 general knowledge

Atmosphere is the result of very gradual change starting about

  1. 2 million years ago

  2. 5 million years ago

  3. 2 billion years ago

  4. 5 billion years ago
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Earth's atmosphere began forming approximately 5 billion years ago, starting from Earth's formation around 4.5-4.6 billion years ago. The primordial atmosphere came from volcanic outgassing and was very different from today's oxygen-rich atmosphere. The Great Oxygenation Event occurred much later (~2.4 billion years ago), but the atmospheric formation process started with Earth's origin. Options A and B (2-5 million) are far too recent, while 2 billion years is when significant changes occurred, not when it started.

Multiple choice general knowledge

Punch line of ice age 4

  1. The Coolest Event In 16000 Years

  2. The Meltdown

  3. Continental Drift

  4. Dawn of the Dinosaurs
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Ice Age 4: Continental Drift (2012) features the continental breakup as its central plot point. The tagline 'Continental Drift' directly refers to this geological event that separates our heroes and drives the adventure. Previous films had different subtitles: The Meltdown (2) and Dawn of the Dinosaurs (3).

Multiple choice general knowledge science & technology

Name the Longest dinosaur.

  1. Paralititan

  2. Futalognkosaurus

  3. Amphicoelias

  4. Diplodocus
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Amphicoelias fragillimus is considered the longest dinosaur ever discovered, with estimated lengths exceeding 50 meters based on fossil evidence. Paralititan and Futalognkosaurus were large titanosaurs but not the longest, while Diplodocus was long but smaller than Amphicoelias.

Multiple choice softskills communication

The _____ period in the dinosaurs' reign was reached just before severe _____ conditions brought on the ice age.

  1. climactic, climatic

  2. climatic, climactic

  3. both are correct

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

'Climactic' refers to a climax, a dramatic peak or decisive moment, while 'climatic' relates to climate or weather. The sentence describes the peak (climactic) period before severe weather (climatic) conditions. Option B reverses the correct usage. The distinction matters because these terms describe completely different concepts - narrative arc vs atmospheric conditions.

Multiple choice

Which of the following stele, evolved first and is the most primitve type?

  1. Haplostele

  2. Siphonostele

  3. Solenostele

  4. Amphiphloic siphonostele

  5. Protostele
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

The earliest vascular plants had stems with a central core of vascular tissue. This consisted of a cylindrical strand of xylem, surrounded by a region of phloem. Around the vascular tissue there might have been an endodermis that regulated the flow of water into and out of the vascular system. Such an arrangement is termed a protostele.

Multiple choice

Fill blank (vii).

Directions: Read the following passage and fill the numbered blanks using correct option.

Asteroids are rocks and debris which are the leftovers of the construction of our solar system. Most are in a belt, which ___(i)___ between Mars and Jupiter. However, the gravitational influence of the giant planets, like Jupiter, or an impact by a comet can knock these large rocks out of their orbit, thus hurling them ___(ii)___ the Earth. Many bodies have struck Earth in the ___(iii)___, and a widely accepted theory blames the impact of an asteroid for the extinction of dinosaurs about 65 million years ago. The scale of such a disaster can be understood by the example of a relatively small-size asteroid strike in Siberia in early 20th century which ___(iv)___ more than half a million acres of forest.
However, what relieves the common, man of the ___(v)___ regarding asteroid impact is the fact that many scientific groups are dedicated towards tracking the asteroid paths and orbit all around the year. With advanced equipments and technology, they can predict any upcoming danger much in ___(vi)___.
According to them the chances of finding such an asteroid crossing Earth in this or the next five generation’s lifetime is only one in thousands. Even if such an asteroid is found out, there will be ___(vii)___ of time to track it, measure its orbit precisely, and plan a system for ___(viii)___ it from its orbit away from that of the Earth’s. There will be no great hurry, and no great panic. It would be a project for all the world’s nations to take part in. It could be a globally unifying event. Because it will be ___(ix)___ long before it actually hits the Earth. It probably would take only a small measure such as chemical rockets, or perhaps an atomic explosion to divert it from a threatening path. Thus, in short, it can be said that though the impact would pose enormous risk to all living forms on Earth, the odds of it occurring within our lifetimes is very ___(x)___ and it is unnecessary to run around believing that the sky is falling.

  1. dearth

  2. loss

  3. most

  4. lack

  5. plenty
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

The passage is talking about advancement in technology in predicting asteroid impacts. As the danger will be known beforehand it can be avoided or impact can be lessened. So, correct phrase is 'plenty of time'. Dearth/loss/lack is contrary to the context. 'Most of time' is incorrect usage.

Multiple choice

Which of the following is a living fossil?

  1. Euglena

  2. Limulus

  3. Sycon

  4. Balanoglossus

  5. Herdmania
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

  Limulus is a living fossil.A living fossil is a living species (or clade) of organism that appears to be similar to a species otherwise known only from fossils. Normally the similarity is only a superficial physical resemblance between two different species, one extinct, the other extant.