Match List I with List II :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
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 |
- A-IV, B-Ill, C-II, D-I
- A-IV, B-II, C-III, D-I
- A-IV, B-III, C-I, D-II
- A-III, B-IV, C-I, D-II
The Correct Option is A
Solution and Explanation
A. Living Fossil: Latimeria (coelacanth) is a living fossil, a species that has remained relatively unchanged for millions of years and closely resembles ancient fossil forms. A-IV
B. Connecting Link: Echidna (spiny anteater) exhibits characteristics of both reptiles and mammals and is considered a connecting link between these two classes of vertebrates. B-III
C. Vestigial Organ: The vermiform appendix is a vestigial organ in humans, a structure that has lost most or all of its original function through evolution. C-II
D. Atavism: Elongated canine teeth (sometimes referred to as ”vampire teeth”) are an example of atavism in humans, the reappearance of an ancestral trait that had been lost in previous generations. D-I
Top Questions on evolution
- How does the process of Natural Selection affect Hardy-Weinberg equilibrium? Explain with the help of graphs.
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(b) Cite an example where more than one adaptive radiation has occurred in an isolated geographical area. Name the type of evolution your example depicts. - (a) "The process of evolution of different species in a given geographical area starts from a point and literally radiates to other geographical areas." Explain it with an example.
(b) Cite an example where more than one adaptive radiation has occurred in an isolated geographical area. Name the type of evolution your example depicts. - A few stages and their respective time period in the evolutionary history of human beings are mentioned in the flowchart given below:
- 15 mya — Primates walking like gorillas and chimpanzees existed.
- 3–4 mya — Man-like primates walked in Eastern Africa. Fossils of their bones were discovered.
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- 1.5 mya — This hominid had a brain size of 900 cc and probably ate meat.
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- [(b)] Name one place where fossils of primates were discovered in Eastern Africa.
- [(c)] Name the ancestor that lived in the East African grasslands about 2 mya.
- [(d)] Name the hominid that was found around 1.5 mya.
The given graph shows the range of variation among population members, for a trait determined by multiple genes. If this population is subjected to disruptive selection for several generations, which of the following distributions is most likely to result?
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