Documented microfossils have been found that are as old as
- 2.5 billion years
- 3.5 billion years
- 1.5 billion years
- 2.5 million years
The Correct Option is B
Solution and Explanation
Top Questions on evolution
- Which evolutionary phenomenon is depicted by the sketch given in figure?
- NEET (UG) - 2024
- Biology
- evolution
- The flippers of the Penguins and Dolphins are the example of the
- NEET (UG) - 2024
- Biology
- evolution
- What is the correct order (old to recent) of periods in Paleozoic era?
- NEET (UG) - 2024
- Biology
- evolution
- Match List I with List II :Choose the correct answer from the options given below :
List - I List – II A. Living Fossil i. Elongated canine teeth B. Connecting Link ii. Vermiform appendix C. Vestigial Organ iii. Echidna D. Atavism iv. Latimeria - NEET (UG) - 2024
- Biology
- evolution
- Given below are some stages of human evolution. Arrange them in correct sequence. (Past to Recent)
A. Homo habilis
B. Homo sapiens
C. Homo neanderthalensis
D. Homo erectus
Choose the correct sequence of human evolution from the options given below:- NEET (UG) - 2024
- Biology
- evolution
Questions Asked in AIIMS exam
Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R
Assertion (A) : 02 is liberated in the non-cyclic photophosphorylation.
Reason (R) : Liberation of oxygen is due to photolysis of water.
In the light of the above statements, choose the correct answer from the options given below
- AIIMS - 2019
- Photosynthesis in higher plants
- Match the following column I with column II.
- AIIMS - 2019
- cloning
- Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R
Assertion: Orbit of a satellite is within the gravitational field of earth whereas escaping is beyond the gravitational field of earth.
Reason: Orbital velocity of a satellite is greater than its escape velocity.
In the light of the above statements, choose the correct answer from the options given below- AIIMS - 2019
- Gravitation
Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R
Assertion (A) : In eukaryotes, transcription occurs in nucleus.
Reason (R) : In bacteria, transcription and translation occurs in cytoplasm.
In the light of the above statements, choose the correct answer from the options given below
- AIIMS - 2019
- Transcription
- Which of the following salts is coloured salt before heating?
- AIIMS - 2019
- d -and f -Block Elements
Concepts Used:
Evolution
Evolution is a process that occurs in changes in the genetic content of a population over time. Evolutionary change is generally classified into two: microevolution and macroevolution. The process of changes in allele frequencies in a population over time is a microevolutionary process. Three main mechanisms that cause allele frequency change are natural selection, genetic drift, and gene flow. On the other hand, macroevolution refers to change at or above the level of the species.