Tag: concepts of evolution

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Questions Related to concepts of evolution

Multiple choice biology origin and evolution of life fossilization geological time scale, extinctions and fossils concepts of evolution

Remains of an organism of a former geological age is known as ...........

  1. Fossils

  2. Coal

  3. Petroleum

  4. Both A and B
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Fossils are the preserved traces of the organisms of a former geological age that once existed and now they are extinct. Fossils are formed because some organisms failed to decay completely and have remained preserved till today.
  • Fossils are very important for the study of evolution and for studying classification.
  • So, the correct option is 'Fossils'.
Multiple choice biology origin and evolution of life fossilization geological time scale, extinctions and fossils concepts of evolution

Choose the correct answers from the alternatives given .
The fossil record offers direct evidence for common descent because you can

  1. Sometimes find common ancestors

  2. Trace the ancestry of a particular group

  3. See that the types of fossils change over time

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

Fossils are the preserved remains of previously living organisms or their traces, dating from the distant past. Fossils document the existence of now-extinct species, showing that different organisms have lived on Earth during different periods of the planet's history. They can also help scientists reconstruct the evolutionary histories and ancestry of present-day species. For instance, some of the best-studied fossils are of the horse lineage. Using these fossils, scientists have been able to reconstruct a large, branching "family tree" for horses and their now-extinct relatives. 

So, the correct option is 'All of the above'.

Multiple choice biology origin and evolution of life fossilization geological time scale, extinctions and fossils concepts of evolution

Foot prints, trails, tracks and tunnels of various organisations made in mud are rapidly filled in with sand and covered by sediments. This is an example of which of the following types of fossil?

  1. Petrified fossil

  2. Impressions

  3. Imprints

  4. Coprolites
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Impressions are two-dimensional imprints of an organism that doesn't contain any organic material. An impression is a clue left of the organism's biological activity, they can be formed while the organism was moving or any other biological activity.
So the correct option is 'Impressions'.

Multiple choice biology origin and evolution of life fossilization geological time scale, extinctions and fossils concepts of evolution

Which of the following is relatively more accurate method of determining the age of fossils?

  1. Uranium-lead method

  2. Radio-carbon method

  3. Study of carbohydrates/ proteins in rocks

  4. Electron-spin resonance method
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
  • The dating of fossils using uranium and lead is one of the oldest processes of doing so. 
  • This is also the most redefined methods of fossil-dating. 
  • This process can enable dating of fossils that are around 1 million years to over 4.5 billion years old. 
  • This process has a routine precision in the 0.1–1 per cent range and hence, can be considered the most accurate method of fossil-dating.
  • So, the correct answer is 'Uranium-lead method'.
Multiple choice biology origin and evolution of life fossilization geological time scale, extinctions and fossils concepts of evolution

When was the first nuclear reactor built

  1. 1942

  2. 1944

  3. 1945

  4. 1947
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Chicago Pile 1 was the world's first nuclear reactor, built in 1942 by Nobel Prize winner Enrico Fermi. The reactor was built underneath the University of Chicago's Stagg Field football stadium. On Dec. 2, 1942, Enrico Fermi and 48 of his colleagues succeed in achieving in this reactor the world’s first man-made controlled nuclear chain reaction, thereby establishing the ability of mankind to control the release of nuclear energy. 

So the correct answer is ' 1942'.

Multiple choice biology origin and evolution of life fossilization geological time scale, extinctions and fossils concepts of evolution

Choose the correct answers from the alternatives given:
The first true hominids in the fossil record have been placed in the genus

  1. Aegyptopithecus

  2. Australopithecus

  3. Dryopithecus

  4. Homo
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Aegyptopithecus was an early primate that existed around 30 mya and it is widely believed to be ancestral to monkeys (cercopithecoids), as well as to humans and apes (hominoids). About 15 mya, primates called Dryopithecus and Ramapithecus were existing. They were hairy and walked like gorillas and chimpanzees. Ramapithecus was more man-like while Dryopithecus was more ape-like. 

Australopithecus afarensis is one of the longest-lived, widely believed and best-known early human species. Found between 3.85 and 2.95 million years ago in Eastern Africa (Ethiopia, Kenya, Tanzania), this species survived for more than 900,000 years.
 Hence, the correct answer is 'Australopithecus'.