Ecology and Evolution (EY) 2016 GATE Paper with solution GATE Notes | EduRev

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GATE : Ecology and Evolution (EY) 2016 GATE Paper with solution GATE Notes | EduRev

 Page 1


GATE 2016  General Aptitude – GA Set-7 
 1/3 
Q. 1 – Q. 5 carry one mark each. 
Q.1  If I were you, I __________ that laptop. It’s much too expensive. 
 
(A) won’t buy (B) shan’t buy 
 
(C) wouldn’t buy (D) would buy 
 
 
Q.2  He turned a deaf ear to my request. 
 
What does the underlined phrasal verb mean?  
 
(A)   ignored (B)   appreciated (C)   twisted  (D)   returned  
 
 
Q.3  Choose the most appropriate set of words from the options given below to complete the following 
sentence. 
 
_________    ___________ is a will, _________ is a way. 
 
(A) Wear, there, their (B) Were, their, there 
 
(C) Where, there, there (D) Where, their, their 
 
 
Q.4  (x % of y) + (y % of x) is equivalent to            . 
 
(A)   2 % of xy (B)   2 % of (xy/100) (C)   xy % of 100 (D)   100 % of xy 
 
 
Q.5  The sum of the digits of a two digit number is 12. If the new number formed by reversing the digits 
is greater than the original number by 54, find the original number. 
 
(A)   39 (B)   57 (C)   66 (D)   93 
 
 
  
Page 2


GATE 2016  General Aptitude – GA Set-7 
 1/3 
Q. 1 – Q. 5 carry one mark each. 
Q.1  If I were you, I __________ that laptop. It’s much too expensive. 
 
(A) won’t buy (B) shan’t buy 
 
(C) wouldn’t buy (D) would buy 
 
 
Q.2  He turned a deaf ear to my request. 
 
What does the underlined phrasal verb mean?  
 
(A)   ignored (B)   appreciated (C)   twisted  (D)   returned  
 
 
Q.3  Choose the most appropriate set of words from the options given below to complete the following 
sentence. 
 
_________    ___________ is a will, _________ is a way. 
 
(A) Wear, there, their (B) Were, their, there 
 
(C) Where, there, there (D) Where, their, their 
 
 
Q.4  (x % of y) + (y % of x) is equivalent to            . 
 
(A)   2 % of xy (B)   2 % of (xy/100) (C)   xy % of 100 (D)   100 % of xy 
 
 
Q.5  The sum of the digits of a two digit number is 12. If the new number formed by reversing the digits 
is greater than the original number by 54, find the original number. 
 
(A)   39 (B)   57 (C)   66 (D)   93 
 
 
  
GATE 2016  General Aptitude – GA Set-7 
 2/3 
Q. 6 – Q. 10 carry two marks each.  
 
Q.6  Two finance companies, P and Q, declared fixed annual rates of interest on the amounts invested 
with them. The rates of interest offered by these companies may differ from year to year. Year-wise 
annual rates of interest offered by these companies are shown by the line graph provided below.  
 
 
 
If the amounts invested in the companies, P and Q, in 2006 are in the ratio 8:9, then the amounts 
received after one year as interests from companies P and Q would be in the ratio: 
(A) 2:3 
(B) 3:4 
(C) 6:7 
(D) 4:3 
 
 
Q.7  Today, we consider Ashoka as a great ruler because of the copious evidence he left behind in the 
form of stone carved edicts. Historians tend to correlate greatness of a king at his time with the 
availability of evidence today. 
 
Which of the following can be logically inferred from the above sentences? 
 
(A)   Emperors who do not leave significant sculpted evidence are completely forgotten. 
 
(B)   Ashoka produced stone carved edicts to ensure that later historians will respect him. 
 
(C)   Statues of kings are a reminder of their greatness. 
 
(D)   A king’s greatness, as we know him today, is interpreted by historians. 
 
 
7
9
8
10
7.5
6.5
6
6.5
8
9.5
8
9
8
4
2000 2001 2002 2003 2004 2005 2006
P Q
Page 3


GATE 2016  General Aptitude – GA Set-7 
 1/3 
Q. 1 – Q. 5 carry one mark each. 
Q.1  If I were you, I __________ that laptop. It’s much too expensive. 
 
(A) won’t buy (B) shan’t buy 
 
(C) wouldn’t buy (D) would buy 
 
 
Q.2  He turned a deaf ear to my request. 
 
What does the underlined phrasal verb mean?  
 
(A)   ignored (B)   appreciated (C)   twisted  (D)   returned  
 
 
Q.3  Choose the most appropriate set of words from the options given below to complete the following 
sentence. 
 
_________    ___________ is a will, _________ is a way. 
 
(A) Wear, there, their (B) Were, their, there 
 
(C) Where, there, there (D) Where, their, their 
 
 
Q.4  (x % of y) + (y % of x) is equivalent to            . 
 
(A)   2 % of xy (B)   2 % of (xy/100) (C)   xy % of 100 (D)   100 % of xy 
 
 
Q.5  The sum of the digits of a two digit number is 12. If the new number formed by reversing the digits 
is greater than the original number by 54, find the original number. 
 
(A)   39 (B)   57 (C)   66 (D)   93 
 
 
  
GATE 2016  General Aptitude – GA Set-7 
 2/3 
Q. 6 – Q. 10 carry two marks each.  
 
Q.6  Two finance companies, P and Q, declared fixed annual rates of interest on the amounts invested 
with them. The rates of interest offered by these companies may differ from year to year. Year-wise 
annual rates of interest offered by these companies are shown by the line graph provided below.  
 
 
 
If the amounts invested in the companies, P and Q, in 2006 are in the ratio 8:9, then the amounts 
received after one year as interests from companies P and Q would be in the ratio: 
(A) 2:3 
(B) 3:4 
(C) 6:7 
(D) 4:3 
 
 
Q.7  Today, we consider Ashoka as a great ruler because of the copious evidence he left behind in the 
form of stone carved edicts. Historians tend to correlate greatness of a king at his time with the 
availability of evidence today. 
 
Which of the following can be logically inferred from the above sentences? 
 
(A)   Emperors who do not leave significant sculpted evidence are completely forgotten. 
 
(B)   Ashoka produced stone carved edicts to ensure that later historians will respect him. 
 
(C)   Statues of kings are a reminder of their greatness. 
 
(D)   A king’s greatness, as we know him today, is interpreted by historians. 
 
 
7
9
8
10
7.5
6.5
6
6.5
8
9.5
8
9
8
4
2000 2001 2002 2003 2004 2005 2006
P Q
GATE 2016  General Aptitude – GA Set-7 
 3/3 
Q.8  Fact 1: Humans are mammals. 
Fact 2: Some humans are engineers. 
Fact 3: Engineers build houses. 
 
If the above statements are facts, which of the following can be logically inferred? 
 
I. All mammals build houses. 
II. Engineers are mammals. 
III. Some humans are not engineers. 
 
(A)   II only. (B)   III only. 
 
(C)   I, II and III. (D)   I only. 
 
 
Q.9  A square pyramid has a base perimeter x, and the slant height is half of the perimeter. What is the 
lateral surface area of the pyramid? 
 
(A)   x
2
 
(B)   0.75 x
2
 (C)   0.50 x
2
 (D)   0.25 x
2
 
 
 
 
END OF THE QUESTION PAPER 
 
Q.10  Ananth takes 6 hours and Bharath takes 4 hours to read a book. Both started reading copies of the 
book at the same time. After how many hours is the number of pages to be read by Ananth, twice 
that to be read by Bharath? Assume Ananth and Bharath read all the pages with constant pace.  
 
(A)   1 (B)   2 (C)   3 (D)   4 
Page 4


GATE 2016  General Aptitude – GA Set-7 
 1/3 
Q. 1 – Q. 5 carry one mark each. 
Q.1  If I were you, I __________ that laptop. It’s much too expensive. 
 
(A) won’t buy (B) shan’t buy 
 
(C) wouldn’t buy (D) would buy 
 
 
Q.2  He turned a deaf ear to my request. 
 
What does the underlined phrasal verb mean?  
 
(A)   ignored (B)   appreciated (C)   twisted  (D)   returned  
 
 
Q.3  Choose the most appropriate set of words from the options given below to complete the following 
sentence. 
 
_________    ___________ is a will, _________ is a way. 
 
(A) Wear, there, their (B) Were, their, there 
 
(C) Where, there, there (D) Where, their, their 
 
 
Q.4  (x % of y) + (y % of x) is equivalent to            . 
 
(A)   2 % of xy (B)   2 % of (xy/100) (C)   xy % of 100 (D)   100 % of xy 
 
 
Q.5  The sum of the digits of a two digit number is 12. If the new number formed by reversing the digits 
is greater than the original number by 54, find the original number. 
 
(A)   39 (B)   57 (C)   66 (D)   93 
 
 
  
GATE 2016  General Aptitude – GA Set-7 
 2/3 
Q. 6 – Q. 10 carry two marks each.  
 
Q.6  Two finance companies, P and Q, declared fixed annual rates of interest on the amounts invested 
with them. The rates of interest offered by these companies may differ from year to year. Year-wise 
annual rates of interest offered by these companies are shown by the line graph provided below.  
 
 
 
If the amounts invested in the companies, P and Q, in 2006 are in the ratio 8:9, then the amounts 
received after one year as interests from companies P and Q would be in the ratio: 
(A) 2:3 
(B) 3:4 
(C) 6:7 
(D) 4:3 
 
 
Q.7  Today, we consider Ashoka as a great ruler because of the copious evidence he left behind in the 
form of stone carved edicts. Historians tend to correlate greatness of a king at his time with the 
availability of evidence today. 
 
Which of the following can be logically inferred from the above sentences? 
 
(A)   Emperors who do not leave significant sculpted evidence are completely forgotten. 
 
(B)   Ashoka produced stone carved edicts to ensure that later historians will respect him. 
 
(C)   Statues of kings are a reminder of their greatness. 
 
(D)   A king’s greatness, as we know him today, is interpreted by historians. 
 
 
7
9
8
10
7.5
6.5
6
6.5
8
9.5
8
9
8
4
2000 2001 2002 2003 2004 2005 2006
P Q
GATE 2016  General Aptitude – GA Set-7 
 3/3 
Q.8  Fact 1: Humans are mammals. 
Fact 2: Some humans are engineers. 
Fact 3: Engineers build houses. 
 
If the above statements are facts, which of the following can be logically inferred? 
 
I. All mammals build houses. 
II. Engineers are mammals. 
III. Some humans are not engineers. 
 
(A)   II only. (B)   III only. 
 
(C)   I, II and III. (D)   I only. 
 
 
Q.9  A square pyramid has a base perimeter x, and the slant height is half of the perimeter. What is the 
lateral surface area of the pyramid? 
 
(A)   x
2
 
(B)   0.75 x
2
 (C)   0.50 x
2
 (D)   0.25 x
2
 
 
 
 
END OF THE QUESTION PAPER 
 
Q.10  Ananth takes 6 hours and Bharath takes 4 hours to read a book. Both started reading copies of the 
book at the same time. After how many hours is the number of pages to be read by Ananth, twice 
that to be read by Bharath? Assume Ananth and Bharath read all the pages with constant pace.  
 
(A)   1 (B)   2 (C)   3 (D)   4 
GATE 2016  Ecology 
EY 1/11 
Q. 1 – Q. 25 carry one mark each. 
Q.1  Different kinds of limbs, such as the wings of birds and bats, and the flippers of turtles, whales and 
dolphins, have the same underlying skeletal structure. This is an example of: 
(A) Analogy (B) Convergence   (C) Homology (D) Genetic drift   
 
 
Q.2  Forests with a high density of native conifer trees are found in:  
(A) Gujarat (B) Haryana 
(C) Himachal Pradesh (D) Odisha 
 
 
Q.3  Ozone layer depletion, since the 1970s, is primarily attributed to: 
(A) carbon dioxide  (B) chlorofluorocarbons 
(C) global warming (D) UV radiation 
 
 
Q.4  The evolution of the amniotic egg in reptiles allowed them to: 
(A) colonize dry terrestrial environments  
(B) give birth to live young 
(C) lay eggs in water and on land 
(D) live in aquatic environments 
 
 
Q.5  Which of the following phyla are most closely related to chordates ? 
(A) Annelida   (B) Arthropoda (C) Echinodermata (D) Mollusca   
 
 
Q.6  Limb lengths were measured for 50 individuals from a population of lizards and the sample 
variance was calculated to be 64 cm
2
. The standard deviation for this sample is ______ cm. 
(Use decimal notation, not fractions or percentage) 
 
Q.7  Most terrestrial ecosystems have a pyramidal structure of standing biomass across trophic levels 
where biomass of producers > primary consumers > secondary consumers > tertiary consumers. 
However, some aquatic ecosystems have an inverted pyramidal structure where the standing 
biomass of producers < primary consumers. An explanation for this is: 
(A) greater efficiency of primary consumers in aquatic ecosystems 
(B) high turnover rates of aquatic producers relative to consumers 
(C) low nutrient concentrations in aquatic ecosystems 
(D) very high light limitation in aquatic ecosystems 
 
 
Q.8  In an experiment, a PhD student found that the traits, flower colour and seed size, did not follow 
Mendel’s Law of Independent Assortment. A possible explanation for this observation is: 
(A) co-dominance between alleles  (B) incomplete dominance  
(C) linkage between the traits (D) loci on different chromosomes 
 
 
Q.9  Which of the following invertebrates has the lowest gut length:body length ratio? 
(A) dragonflies  (B) grasshoppers  (C) leaf hoppers (D)  termites 
 
Page 5


GATE 2016  General Aptitude – GA Set-7 
 1/3 
Q. 1 – Q. 5 carry one mark each. 
Q.1  If I were you, I __________ that laptop. It’s much too expensive. 
 
(A) won’t buy (B) shan’t buy 
 
(C) wouldn’t buy (D) would buy 
 
 
Q.2  He turned a deaf ear to my request. 
 
What does the underlined phrasal verb mean?  
 
(A)   ignored (B)   appreciated (C)   twisted  (D)   returned  
 
 
Q.3  Choose the most appropriate set of words from the options given below to complete the following 
sentence. 
 
_________    ___________ is a will, _________ is a way. 
 
(A) Wear, there, their (B) Were, their, there 
 
(C) Where, there, there (D) Where, their, their 
 
 
Q.4  (x % of y) + (y % of x) is equivalent to            . 
 
(A)   2 % of xy (B)   2 % of (xy/100) (C)   xy % of 100 (D)   100 % of xy 
 
 
Q.5  The sum of the digits of a two digit number is 12. If the new number formed by reversing the digits 
is greater than the original number by 54, find the original number. 
 
(A)   39 (B)   57 (C)   66 (D)   93 
 
 
  
GATE 2016  General Aptitude – GA Set-7 
 2/3 
Q. 6 – Q. 10 carry two marks each.  
 
Q.6  Two finance companies, P and Q, declared fixed annual rates of interest on the amounts invested 
with them. The rates of interest offered by these companies may differ from year to year. Year-wise 
annual rates of interest offered by these companies are shown by the line graph provided below.  
 
 
 
If the amounts invested in the companies, P and Q, in 2006 are in the ratio 8:9, then the amounts 
received after one year as interests from companies P and Q would be in the ratio: 
(A) 2:3 
(B) 3:4 
(C) 6:7 
(D) 4:3 
 
 
Q.7  Today, we consider Ashoka as a great ruler because of the copious evidence he left behind in the 
form of stone carved edicts. Historians tend to correlate greatness of a king at his time with the 
availability of evidence today. 
 
Which of the following can be logically inferred from the above sentences? 
 
(A)   Emperors who do not leave significant sculpted evidence are completely forgotten. 
 
(B)   Ashoka produced stone carved edicts to ensure that later historians will respect him. 
 
(C)   Statues of kings are a reminder of their greatness. 
 
(D)   A king’s greatness, as we know him today, is interpreted by historians. 
 
 
7
9
8
10
7.5
6.5
6
6.5
8
9.5
8
9
8
4
2000 2001 2002 2003 2004 2005 2006
P Q
GATE 2016  General Aptitude – GA Set-7 
 3/3 
Q.8  Fact 1: Humans are mammals. 
Fact 2: Some humans are engineers. 
Fact 3: Engineers build houses. 
 
If the above statements are facts, which of the following can be logically inferred? 
 
I. All mammals build houses. 
II. Engineers are mammals. 
III. Some humans are not engineers. 
 
(A)   II only. (B)   III only. 
 
(C)   I, II and III. (D)   I only. 
 
 
Q.9  A square pyramid has a base perimeter x, and the slant height is half of the perimeter. What is the 
lateral surface area of the pyramid? 
 
(A)   x
2
 
(B)   0.75 x
2
 (C)   0.50 x
2
 (D)   0.25 x
2
 
 
 
 
END OF THE QUESTION PAPER 
 
Q.10  Ananth takes 6 hours and Bharath takes 4 hours to read a book. Both started reading copies of the 
book at the same time. After how many hours is the number of pages to be read by Ananth, twice 
that to be read by Bharath? Assume Ananth and Bharath read all the pages with constant pace.  
 
(A)   1 (B)   2 (C)   3 (D)   4 
GATE 2016  Ecology 
EY 1/11 
Q. 1 – Q. 25 carry one mark each. 
Q.1  Different kinds of limbs, such as the wings of birds and bats, and the flippers of turtles, whales and 
dolphins, have the same underlying skeletal structure. This is an example of: 
(A) Analogy (B) Convergence   (C) Homology (D) Genetic drift   
 
 
Q.2  Forests with a high density of native conifer trees are found in:  
(A) Gujarat (B) Haryana 
(C) Himachal Pradesh (D) Odisha 
 
 
Q.3  Ozone layer depletion, since the 1970s, is primarily attributed to: 
(A) carbon dioxide  (B) chlorofluorocarbons 
(C) global warming (D) UV radiation 
 
 
Q.4  The evolution of the amniotic egg in reptiles allowed them to: 
(A) colonize dry terrestrial environments  
(B) give birth to live young 
(C) lay eggs in water and on land 
(D) live in aquatic environments 
 
 
Q.5  Which of the following phyla are most closely related to chordates ? 
(A) Annelida   (B) Arthropoda (C) Echinodermata (D) Mollusca   
 
 
Q.6  Limb lengths were measured for 50 individuals from a population of lizards and the sample 
variance was calculated to be 64 cm
2
. The standard deviation for this sample is ______ cm. 
(Use decimal notation, not fractions or percentage) 
 
Q.7  Most terrestrial ecosystems have a pyramidal structure of standing biomass across trophic levels 
where biomass of producers > primary consumers > secondary consumers > tertiary consumers. 
However, some aquatic ecosystems have an inverted pyramidal structure where the standing 
biomass of producers < primary consumers. An explanation for this is: 
(A) greater efficiency of primary consumers in aquatic ecosystems 
(B) high turnover rates of aquatic producers relative to consumers 
(C) low nutrient concentrations in aquatic ecosystems 
(D) very high light limitation in aquatic ecosystems 
 
 
Q.8  In an experiment, a PhD student found that the traits, flower colour and seed size, did not follow 
Mendel’s Law of Independent Assortment. A possible explanation for this observation is: 
(A) co-dominance between alleles  (B) incomplete dominance  
(C) linkage between the traits (D) loci on different chromosomes 
 
 
Q.9  Which of the following invertebrates has the lowest gut length:body length ratio? 
(A) dragonflies  (B) grasshoppers  (C) leaf hoppers (D)  termites 
 
GATE 2016  Ecology 
EY 2/11 
 
Q.10  Allopatric speciation occurs when two populations diverge because of geographical separation. 
Rates of allopatric speciation are likely to be higher in:  
(A) marine organisms with active dispersal  
(B) marine organisms with passive dispersal 
(C) terrestrial organisms with high dispersal ability 
(D) terrestrial organisms with low dispersal ability 
 
 
Q.11  For nearly 200 years, biogeographers have noted that the tropics have more terrestrial species than 
temperate regions. Which of the following is NOT a plausible explanation for this pattern? 
(A) Diversification rates are higher in the tropics  
(B) Energy inputs are higher in the tropics 
(C) There is greater land area in the tropics 
(D) Tropical species have greater climatic tolerance  
 
 
Q.12  If the rate of non-synonymous substitution at a locus exceeds that of synonymous substitution, then: 
(A) deleterious mutations are accumulating  
(B) evolution is not occurring 
(C) genetic drift is operating 
(D) selection is operating  
 
 
Q.13  There are N individuals in a haploid population. At a given locus, there are 2 alleles, AL1 and AL2. 
The number of copies of allele AL1 is Z1, and the number of copies of allele AL2 is Z2 in the 
population. What is the frequency of allele AL2? 
(A) Z1/N (B) Z2/N  (C) Z1+Z2   (D) (Z1+Z2)/N   
 
 
Q.14  According to Hamilton’s Rule, an altruistic act will spread in a population due to kin selection, 
when B/C > 1/r , where B is the benefit to the recipient, C is the cost to the actor and r is the genetic 
relatedness of the recipient to the actor. Given this relationship, a human may forego producing one 
of her own offspring to help her full sibling raise offspring, only if it results in at least  ______ or 
more extra offspring produced by her sibling. 
(A) 1 (B) 2 (C) 4 (D) 8 
 
 
Q.15  Which of the following is NOT a plant hormone? 
(A) Corticosterone  (B) Ethylene  (C) Jasmonic acid (D) Salicylic acid 
 
   
Q.16  Among foraging shore birds, feeding rates (F, number of prey items consumed in 5 minutes) 
decrease as the number of neighbours (N) increases as follows: F = 10 – 0.9N. The maximum 
feeding rate is ________________. (Use decimal notation, not fractions or percentage) 
 
 
Q.17  Which of the following is NOT an adaptation to reduce the risk of predation? 
(A) Alarm calling (B) Cannibalism 
(C) Group living (D) Sentinel behaviour 
 
 
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