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Origin and Evolution of life Quiz-14

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NEET is the most famous and important medical entrance examination held in our country. This exam is an objective type, an offline test which includes 4 sections namely– Physics, Chemistry, Botany, and Zoology. The maximum marks that can be scored are 720 marks and have 180 questions. About half of the paper consists of questions from Biology, as the NEET exam essentially focuses on capacitating students to go for seats in medical courses. One of the most significant and crucial sections in the NEET exam is of Biology. It comprises of theories, descriptions, discoveries, diagrams, definitions, explanations of differences, and relations. The majority of the topics covered in the NEET syllabus are from the NCERT syllabus of Class 11 & 12 and other related sources become part of the rest of the syllabus. Clear Exam curates a list of articles selected by professionals who recommend the highly vital topics for NEET exams. The table below takes you directly to the respective topic where the in-depth article and the MCQs are available for an easy and productive learning experience. Prior to solving NEET question papers or practicing mock tests, you must ensure to study the basic concepts in NEET and practice a few sample questions related to this exam. Students will be covered for all their studies as the topics are available from basics to even the most advanced. .

Q1. Primitive man was originated during
  •  Miocene
  •  Holocene
  •  Pleistocene
  •  Pliocene
Solution
Australopithecus(first ape-man) lived from 4 to 1.5 million years ago in cave during Pleistocene period. It was erect posture, omnivorous and have cranial capacity of 500-700 cc.

Q2. Lamarck’s theory of evolution is also known as
  •  Theory of acquired characters
  •  Theory of genetic characters
  •  Theory of spontaneous characters
  •  Theory of impose characters
Solution
Lamarck’s theory (theory of acquired characters). Lakarckism includes the four main factors (i) Internal Vital Force All the living things and their component parts are continually increased due to the internal vital force (ii) Effect of Environment and New Needs Environment influences all the type of organisms. Any changes in environment brings about changes in organisms. It gives rise to the new needs of organisms (iii) Use and Disuse of Organs If an organ is constantly used it would be better developed whereas disuse of organ results in its degeneration (iv) Inheritance of Acquired Characters Whatever an individual acquires (to possess) characters in its life time due to internal vital forces effect of environment, new needs and use and disuse of organs, they are inherited (transmitted) to the next generations. After several generations, the variations are accumulated upto such extent that they give rise to new species Objection in Lamarck Theory (i) Boring of pinna (external ear) and nose of women is never inherited to the next generations (ii) The wrestler’s powerful muscles are not transmitted to the offspring (iii) European ladies wear tight waist garments in order to keep their waist slender but their off spring at the time of birth have normal waists (iv) Chinese women used to wear irons shoes in order to have small feet, but their children at the time of birth have always normal feet

Q3. Homo sapiens were arose in
  •  Africa
  •  America
  •  England
  •  India
Solution
Homo sapiens arose in Africa and moved across continents and developed into deistinct races. During ice-age between 7,000-10,000 years ago, modern Homo sapiens arose. Pre-historic cave art developed about 18,000 years ago. Agriculture came around 10,000 years back and human settlements started

Q4. Ancestor of man, who first stood erect, was
  •  Australopithecus
  •  Cromagnon
  •  Java –ape man
  •  Peking man
Solution
Australopithecusare considered as connecting link between ape and man. They were the ancestors of man, who first stood erect. Their cranial capacity was 300-500 cc.

Q5.Saltation stands for
  •  Single step large mutation
  •  Single step small mutation
  •  Double step small mutation
  •  Double step large mutation
Solution
  Single step large mutation. Hugo de Vries believed that mutation causes evolution and not the minor heritable variations, which was mentioned by Darwin Mutation are random and directionless, while Darwin’s variations are small and directional Term ‘saltation’ is also called single step large mutation, which leads to new specks

Q6. First mammal occurred in which era/period?
  •  Permian –Palaeozoic
  •  Triassic –Mesozoic
  • Tertiary –Coenozoic
  •  None of these
Solution
The Triassic period of Mesozoic era, the primitive amphibians became extinct some of the reptilian group returned to sea-life and some invaded air. Another important event which took place late in Triassic period was the first appearance of mammals, which retained egg laying habit.The Triassic period of Mesozoic era, the primitive amphibians became extinct some of the reptilian group returned to sea-life and some invaded air. Another important event which took place late in Triassic period was the first appearance of mammals, which retained egg laying habit.

Q7.When and who wrote the book. The origin of species?
  •  Mendel in 1809
  •  Wallace in 1858
  •  Lamarck in 1869
  •  Darwin in 1859
Solution
In 1859, Darwin published his observations and conclusion under the name ‘origin of species’. Darwin’s book became very popular and it had changed people’s thinking about organic evolution

Q8.Evolutionary history of an organism is known as
  •  Genetics and interpretation
  •  TBiogenesis
  •  Recapitulation
  •  evolution
Solution
Descent with modification is the main theme of evolution

Q9.Identify the phenomenon in which a new set of population is formed the set of existing population due to the excessive change in the allele frequency
  •  Founder effect
  •  Evolutionary effect
  •  Bottle-neck effect
  •  None of the above
Solution
Founder Effect Sometime the change in allele frequency is so different in the new sample of population that they become a different species. The original drifted population becomes founders and the effect is called founder effect. Generally, this effects operates when a population drifted to the new geographical area permanently

Q10. The diagram below represents a section of undisturbed layers of sedimentary rock in New York State and shows the location of fossils of several closely related species. According to currently accepted evolutionary theory, which is the most probable assumption about species A,B and C? 


  •  Species B is more abundant than species C
  •  Species C existed before species B
  •  Species A and B are genetically identical
  • Species B descended from species A
Solution
Species A is the most recent species because it is located on the top. As time goes on, debris falls on the ground covering these organisms, turning them into fossils. Further we go down, older all the fossils

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Origin and Evolution of life Quiz-14
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