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BIOLOGY ORIGIN AND EVOLUTION OF LIFE QUIZ-2

Dear Readers,

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. Homo sapiens neanderthalensis and Homo sapiens sapiens (Cro-magnon man), were originated from
  •  Homo erectus
  •  Homo habilis
  •  Ramapithecus
  •  Proconsul
Solution
(a) Homo erectus (erect man) appeared about 1.7 million years ago in middle Pleiostocene. Homo erectus was evolved from Homo habilis. He was about 1.5-1.8 metres tall. He was the progenater of two main sub-species Neanderthal and Cro-magnon man

Q2.Homo erectus lived about
  •  2 million years ago
  •  1.5 million years ago
  •  1 million years ago
  •  0.5 million years ago
Solution
(b) 1.5 million years ago

Q3.  The idea of natural selection as the fundamental process of evolutionary changes was reached
  •  By Alfred Russell Wallace in 1901
  •  Independently by Charles Darwin and Alfred Russell Wallace in 1859
  •  Independently by Charles Darwin and Alfred Russell Wallace in 1900
  •  By Charles Darwin in 1866
Solution
(b) In 1831, Charles Darwin accepted an unpaid post of naturalist on the surveyship HMS Beagle, which spends the five years at the sea charting the east coast of South America and gave theory of natural selection. Alfred Russell Wallace had travelled widely in South America, Malaya and the Eastern Indian archipelago and come to the same conclusions as Darwin regarding natural selection. In 1858, Wallace wrote an essay, outline his theory and sent it to Darwin. This stimulated and encouraged Darwin and in July 1858, Darwin and Wallace presented papers on their ideas at a meeting of the Linnean Society in London. Over a year later, in 1859, Darwin published-‘On the origin of species by means of natural selection’.

Q4. Which of the following statements are incorrect?
I. Microbial experiment shows that when the pre-existing advantagoeus mutations are selected they will result in the observation of new phenotypes. Over few generations, this would results in speciation
II. Neanderthal fossils represents a human relative.
III. In 1938, a fish caught in South Africa happened to be a coelacanth (lobe fins) which was thought to be extinct. These animals evolved into the first living amphibian on both land and water
IV. Lichens can be used as water pollution indicators
V. Alfred Wallace, a naturalist, who worked in Malay Archepalago (present Indonesia) had also came to the similar conclusion on natural selection as reached by Darwinism
The correct option is
  •  I and II
  •  Only II
  •  V and IV
  •  Only IV
Solution
(d) Lichens are the indicator of air pollution not of water
Q5.Which one is the largest ape among the given four genera of apes?
  •  Hyalobates (the gibbon)
  •  Simia (orangutan)
  •  Pan (chimpanzee)
  •  Gorilla (the gorilla)
Solution
(a) Genera of apes are as follows (i) Hyalobates (the gibbon) It is smallest and most primitive of the apes (ii) Simia (the orangutan) It build nests on trees (iii) Pan (the chimpanzee) Most intelligent among apes. It can make tools, etc. (iv) Gorilla (the gorilla) It is the largest ape and very dangerous

Q6. Which of the following are the correct pair of homologous organs?
I. Hands of man and wings of bat
II. Wings of bat and wings of cockroach
III. Wings of bird and wings of butterfly
IV. Fins of fish and forelimbs of horse
V. Forearm of human and forelimbs of horse
The correct combination is visible in option
  •  I and II
  •  I and V
  •  III and IV
  •  IV and V
Solution
(b) Hands of man and wings of bat, forearm of humans and forelimbs of horses are the examples of homology because they have same or common origin but have different functions

Q7.First human like hominid is known as
  • Neanderthal man/span>
  •  Homo habilis
  •  Dryopithecus
  •  Homo erectus
Solution
(b) Homo habilis; (homo = human; habilis = able) 2-1.5 mya. Brain of Homo habilis was one half the size of a modern human. They were more sophisticated with rudimentary speech

Q8.Which of the following is a pair of analogous organs?
  • Contractile vacuole in Amoeba and uriniferous tubule in frog
  •  Paddle of whale and front legs of horse
  •  Mouth parts in insects
  •  Forelimbs in lizard and wings in birds
Solution
(a) Contraclile vacuole in Amoeba and uriniferous tubule in frog are analogous organs. Analogous organs have different origin and structure but have same function. Similarly, on the basis of same function is called analogy. Both contractile vacuoles and uriniferous tubules are cocerned with osmoregulation.

Q9.Which set includes only analogous organs?
  •  Wings of butterfly, housefly and bat
  •  Hindlegs of horse, grasshopper and bat
  •  Wings of butterfly and wingspead of bat and birds
  •  Mandibles of cockroach, mosquito and honey bee
Solution
(c) The organs, which have similar function but different in their structure and origin are called analogous organ, e.g., wings of butterfly and wingspead of bat and birds.

Q10. The first mammals were like …A… . Their fossils are small sized. Mammals were …B… and protected their unborn young inside the mother’s body
Choose the correct option for A and B to complete the given NCERT statement

  •  A-shrews. B-viviparous
  •  A-monkeys, B-viviparous
  •  A-monkeys, B-oviparious
  •  A-shrews, B-oviparious
Solution
(a) A-Shrews. B-Viviparous

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