Ichthyosaur was:
1. a marine retile
2. a marine amphibian
3. a fresh water amphibian
4. a flying reptile

Subtopic:   A BRIEF ACCOUNT OF EVOLUTION |
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Most common component of coal-forming ecosystems from the Carboniferous and Permian periods were:
1. Algae and protists
2. Ferns
3. Angisosperms
4. Animals
Subtopic:   A BRIEF ACCOUNT OF EVOLUTION |
 79%
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How many of the given statements are correct regarding the timeline of evolution of different life forms on Earth?
I: By the time of 500 mya, invertebrates were formed and active.
II: Jawless fish probably evolved around 350 mya.
III: Sea weeds and few plants existed probably around 320 mya.
IV: The first organisms that invaded land were plants.
V: Lobefins evolved into the first amphibians.
VI: The amphibians evolved into reptiles.

1. 3
2. 4
3. 5
4. 6
Subtopic:  Evolution Prior to Ape Man: 1 |
 77%
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Consider the given two statements:
Assertion: Unlike amphibians, reptiles were truly successful on land.
Reason: Unlike amphibians, reptiles lay thick-shelled eggs which do not dry up in sun.
 
1. (A) is false but (R) is true
2. (A) is true but (R) is false
3. Both (A) and (R) are true and (R) is the correct explanation of (A)
4. Both (A) and (R) are true but (R) is not the correct explanation of (A)
Subtopic:   A BRIEF ACCOUNT OF EVOLUTION |
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In geological time scale, the correct sequence of periods [beginning with earliest] will be:
1. Silurian → Devonian → Carboniferous → Permian
2. Permian → Devonian → Carboniferous → Silurian             
3. Silurian → Carboniferous → Devonian → Permian
4. Permian → Carboniferous → Devonian → Silurian
Subtopic:   A BRIEF ACCOUNT OF EVOLUTION |
 73%
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Natural selection can lead to:
I: stabilisation in which more individuals acquire mean character value
II: directional change in which more individuals acquire value other than the mean character value
III: disruption in which more individuals acquire peripheral character value at both ends of the distribution curve
1. Only I and II are correct
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
Subtopic:  Natural Selection |
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The loss of genetic variation that occurs when a new population is established by a very small number of individuals from a larger population is called as:
1. Edge effect
2. Genetic bottleneck
3. Founder effect
4. Saltation
Subtopic:  Hardy Weinberg Law: 2 |
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The frequency of the recessive allele for a trait is recorded to be 0.25 [Assume only two alleles for the gen and complete dominance]. What would the expected frequency of the heterozygotes in this population?
1. 0.0625
2. 0.5625
3. 0.375
4. 0.1875
Subtopic:  Hugo De Vries Theory of Evolution |
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Hugo de Vries believed that:
1. discontinuous variations due to mutations are important for evolution
2. continuous variations due to recombination are important for evolution
3. evolution is a function of time
4. evolution is a deterministic process
Subtopic:  Hugo De Vries Theory of Evolution |
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It is possible that Darwin was influenced by the essay on populations by:
1. Carl Correns 2. Charles Lyell
3. Thomas Malthus 4. A. R. Wallace
Subtopic:  Modern Theory of Evolution |
 84%
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