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Q. No.Assertion (A): Adaptive ability is inherited.
Reason (R): Individuals having heritable and useful variations reproduce better and leave more progeny.
In the light of above statements, select the correct answer from the following options.
1. Both (A) and (R) are true and (R) is the correct explanation of (A)
2. Both (A) and (R) are true but (R) is not the correct explanation of (A)
3. (A) is true but (R) is false
4. (A) is false but (R) is true
Subtopic: Concept of Organic Evolution: Evidence |
From NCERT
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Read the following statements and choose the correct option.
Statement (A): Change in gene frequency in a small population by chance is known as genetic drift.
Statement (B): When gene migration occurs between A and B population, gene frequencies change in both the populations.
1. Both statements (A) and (B) are correct
2. Both statements (A) and (B) are incorrect
3. Only statement (A) is correct
4. Only statement (B) is correct
Statement (A): Change in gene frequency in a small population by chance is known as genetic drift.
Statement (B): When gene migration occurs between A and B population, gene frequencies change in both the populations.
1. Both statements (A) and (B) are correct
2. Both statements (A) and (B) are incorrect
3. Only statement (A) is correct
4. Only statement (B) is correct
Subtopic: Hardy Weinberg Law |
82%
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How many statements given below are incorrect?
(a) Homo erectus fossil was discovered in Java in 1981.
(b) The Neanderthal man lived in near east and central Africa between 75,000–10,000 years ago.
(c) Australopithecines were probably taller than 4 feet but did not walk upright.
(d) Few fossils of man-like bones have been discovered in Ethiopia and Tanzania.
1. Three
2. Two
3. One
4. Four
(a) Homo erectus fossil was discovered in Java in 1981.
(b) The Neanderthal man lived in near east and central Africa between 75,000–10,000 years ago.
(c) Australopithecines were probably taller than 4 feet but did not walk upright.
(d) Few fossils of man-like bones have been discovered in Ethiopia and Tanzania.
1. Three
2. Two
3. One
4. Four
Subtopic: Introduction to Human Evolution | Evolution of Homo Sapiens |
From NCERT
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Select the incorrect match.
1. First cellular forms of life – Appeared 2 bya
2. First organisms that invaded land – Plants
3. Sea weeds and few plants – Existed probably around 320 mya
4. Icthyosaurs – Fish-like amphibians
1. First cellular forms of life – Appeared 2 bya
2. First organisms that invaded land – Plants
3. Sea weeds and few plants – Existed probably around 320 mya
4. Icthyosaurs – Fish-like amphibians
Subtopic: Definition & Types of Evolution | A BRIEF ACCOUNT OF EVOLUTION |
51%
From NCERT
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Read the following statements and select the option which includes only correct statements.
(A) Thecodonts are extant ancestors of crocodiles and birds.
(B) Mammals have evolved from sauropsids.
(C) Snakes are closer to lizards than tuataras.
(D) Birds are closer to dinosaurs than crocodiles.
1. (A) and (B)
2. (C) and (D)
3. (A) and (C)
4. (A), (C) and (D)
(A) Thecodonts are extant ancestors of crocodiles and birds.
(B) Mammals have evolved from sauropsids.
(C) Snakes are closer to lizards than tuataras.
(D) Birds are closer to dinosaurs than crocodiles.
1. (A) and (B)
2. (C) and (D)
3. (A) and (C)
4. (A), (C) and (D)
Subtopic: A BRIEF ACCOUNT OF EVOLUTION |
From NCERT
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Embryo of Rohu and Alligator have a row of vestigial gill slits just behind the head but it is a functional organ only in Rohu and not found in Alligator. This evidence for evolution was proposed by
| 1. | Karl Ernst von Baer | 2. | Ernst Haeckel |
| 3. | Charles Darwin | 4. | Lamarck |
Subtopic: Embryological Evidence of Evolution |
70%
From NCERT
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Match column I with column II with respect to human evolution and select the correct option:
1. a(i), b(ii), c(iii), d(iv)
2. a(ii), b(i), c(iv), d(iii)
3. a(iii), b(i), c(iv), d(ii)
4. a(iv), b(iii), c(ii), d(i)
| Column-I | Column-II | ||
| a. | Australopithecines | (i) | Probably ate meat |
| b. | Homo erectus | (ii) | Walked like gorillas |
| c. | Neanderthal man | (iii) | Hunted with stone weapons but essentially ate fruits |
| d. | Ramapithecus | (iv) | (iv) Lived in near east and central Asia |
1. a(i), b(ii), c(iii), d(iv)
2. a(ii), b(i), c(iv), d(iii)
3. a(iii), b(i), c(iv), d(ii)
4. a(iv), b(iii), c(ii), d(i)
Subtopic: Introduction to Human Evolution | Classification of Primates | Evolution of Homo Sapiens |
81%
From NCERT
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Select the option representing correct examples of analogous organs.
(a) Sweet potato and potato
(b) Vertebrate hearts and brains
(c) Thorn of Bougainvillea and tendril of Cucurbita
(d) Eyes of the Octopus and of mammals
(e) Flippers of penguins and dolphins
1. (a), (d), (e)
2. (a), (b), (c)
3. (b), (c), (d)
4. (c), (d), (e)
(a) Sweet potato and potato
(b) Vertebrate hearts and brains
(c) Thorn of Bougainvillea and tendril of Cucurbita
(d) Eyes of the Octopus and of mammals
(e) Flippers of penguins and dolphins
1. (a), (d), (e)
2. (a), (b), (c)
3. (b), (c), (d)
4. (c), (d), (e)
Subtopic: Concept of Organic Evolution: Evidence |
89%
From NCERT
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Marine mollusc having white shell attached to white goose neck barnacles protect themselves from predators. Mollusc having dark tan shell attached to tan coloured rocks survive whereas mollusc having intermediate shell colour fell prey
to predator. The type of natural selection in above context is
1. Stabilising selection
2. Directional selection
3. Balancing selection
4. Disruptive selection
to predator. The type of natural selection in above context is
1. Stabilising selection
2. Directional selection
3. Balancing selection
4. Disruptive selection
Subtopic: Natural Selection |
61%
From NCERT
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How many statements given below are correct?
(a) Seed ferns are common ancestors for Gnetales and cycads.
(b) Zosterophyllum are avascular land plants that evolved in the Silurian period.
(c) Lycopods are the oldest extant vascular land plants.
(d) Sphenopsids evolved from the group of plants to which Psilophyton belongs.
1. Two
2. Three
3. Four
4. One
(a) Seed ferns are common ancestors for Gnetales and cycads.
(b) Zosterophyllum are avascular land plants that evolved in the Silurian period.
(c) Lycopods are the oldest extant vascular land plants.
(d) Sphenopsids evolved from the group of plants to which Psilophyton belongs.
1. Two
2. Three
3. Four
4. One
Subtopic: A BRIEF ACCOUNT OF EVOLUTION |
From NCERT
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