CUET Biology Previous Year Paper 2024

 Page 1


CUET Biology Question Paper 2024 Set A with Solutions
1. Analogous structures are a result of:
(1) Convergent evolution
(2) Divergent evolution
(3) Parallel evolution
(4) Retrogressive evolution
Answer: (1) Convergent evolution
Solution:
Analogous structures arise due to convergent evolution, where di?erent species
evolvesimilartraitsindependentlybecausetheyfacesimilarenvironmentalpressures
or niches. For example, the wings of birds and bats are analogous structures.
Quick Tip
Analogous structures serve similar functions but have di?erent evolutionary
origins. Remember, analogous structures result from convergent evolution,
not common ancestry.
2. Which of the following does not a?ect the Hardy-Weinberg equilib-
rium?
1
Page 2


CUET Biology Question Paper 2024 Set A with Solutions
1. Analogous structures are a result of:
(1) Convergent evolution
(2) Divergent evolution
(3) Parallel evolution
(4) Retrogressive evolution
Answer: (1) Convergent evolution
Solution:
Analogous structures arise due to convergent evolution, where di?erent species
evolvesimilartraitsindependentlybecausetheyfacesimilarenvironmentalpressures
or niches. For example, the wings of birds and bats are analogous structures.
Quick Tip
Analogous structures serve similar functions but have di?erent evolutionary
origins. Remember, analogous structures result from convergent evolution,
not common ancestry.
2. Which of the following does not a?ect the Hardy-Weinberg equilib-
rium?
1
(1) Natural selection
(2) Genetic drift
(3) Gene pool
(4) Gene migration
Answer: (3) Gene pool
Solution:
The Hardy-Weinberg equilibrium is disturbed by factors such as natural selection,
genetic drift, gene migration, and mutation. However, the gene pool refers to the
total genetic diversity within a population and doesn’t disturb the equilibrium by
itself.
Quick Tip
Rememberthatfactorslikenaturalselection,mutation,migration,andgenetic
drifta?ecttheHardy-Weinbergequilibrium,butthegenepoolitselfisaneutral
term.
3. Which of the following primates was more like an ape?
(1) Homo erectus
(2) Dryopithecus
(3) Australopithecines
(4) Ramapithecus
Answer: (2) Dryopithecus
Solution:
2
Page 3


CUET Biology Question Paper 2024 Set A with Solutions
1. Analogous structures are a result of:
(1) Convergent evolution
(2) Divergent evolution
(3) Parallel evolution
(4) Retrogressive evolution
Answer: (1) Convergent evolution
Solution:
Analogous structures arise due to convergent evolution, where di?erent species
evolvesimilartraitsindependentlybecausetheyfacesimilarenvironmentalpressures
or niches. For example, the wings of birds and bats are analogous structures.
Quick Tip
Analogous structures serve similar functions but have di?erent evolutionary
origins. Remember, analogous structures result from convergent evolution,
not common ancestry.
2. Which of the following does not a?ect the Hardy-Weinberg equilib-
rium?
1
(1) Natural selection
(2) Genetic drift
(3) Gene pool
(4) Gene migration
Answer: (3) Gene pool
Solution:
The Hardy-Weinberg equilibrium is disturbed by factors such as natural selection,
genetic drift, gene migration, and mutation. However, the gene pool refers to the
total genetic diversity within a population and doesn’t disturb the equilibrium by
itself.
Quick Tip
Rememberthatfactorslikenaturalselection,mutation,migration,andgenetic
drifta?ecttheHardy-Weinbergequilibrium,butthegenepoolitselfisaneutral
term.
3. Which of the following primates was more like an ape?
(1) Homo erectus
(2) Dryopithecus
(3) Australopithecines
(4) Ramapithecus
Answer: (2) Dryopithecus
Solution:
2
Dryopithecus was an extinct genus of apes and is considered to have been more
like modern apes. It lived during the Miocene and is believed to be an ancestor of
modern great apes and humans.
Quick Tip
For primate evolution, remember that Dryopithecus is closely related to apes,
while Australopithecines and Homo erectus are more closely linked to human
ancestors.
4. Nucleosome is associated with molecules of histones.
(1) Four
(2) Nine
(3) Two
(4) Eight
Answer: (4) Eight
Solution:
Each nucleosome consists of eight histone proteins, forming a core around which
DNA is wrapped. These histones include two copies each of H2A, H2B, H3, and H4.
Quick Tip
Histone proteins help in the packing of DNA in the chromatin structure. Re-
member the ”octamer” of histones in the nucleosome.
3
Page 4


CUET Biology Question Paper 2024 Set A with Solutions
1. Analogous structures are a result of:
(1) Convergent evolution
(2) Divergent evolution
(3) Parallel evolution
(4) Retrogressive evolution
Answer: (1) Convergent evolution
Solution:
Analogous structures arise due to convergent evolution, where di?erent species
evolvesimilartraitsindependentlybecausetheyfacesimilarenvironmentalpressures
or niches. For example, the wings of birds and bats are analogous structures.
Quick Tip
Analogous structures serve similar functions but have di?erent evolutionary
origins. Remember, analogous structures result from convergent evolution,
not common ancestry.
2. Which of the following does not a?ect the Hardy-Weinberg equilib-
rium?
1
(1) Natural selection
(2) Genetic drift
(3) Gene pool
(4) Gene migration
Answer: (3) Gene pool
Solution:
The Hardy-Weinberg equilibrium is disturbed by factors such as natural selection,
genetic drift, gene migration, and mutation. However, the gene pool refers to the
total genetic diversity within a population and doesn’t disturb the equilibrium by
itself.
Quick Tip
Rememberthatfactorslikenaturalselection,mutation,migration,andgenetic
drifta?ecttheHardy-Weinbergequilibrium,butthegenepoolitselfisaneutral
term.
3. Which of the following primates was more like an ape?
(1) Homo erectus
(2) Dryopithecus
(3) Australopithecines
(4) Ramapithecus
Answer: (2) Dryopithecus
Solution:
2
Dryopithecus was an extinct genus of apes and is considered to have been more
like modern apes. It lived during the Miocene and is believed to be an ancestor of
modern great apes and humans.
Quick Tip
For primate evolution, remember that Dryopithecus is closely related to apes,
while Australopithecines and Homo erectus are more closely linked to human
ancestors.
4. Nucleosome is associated with molecules of histones.
(1) Four
(2) Nine
(3) Two
(4) Eight
Answer: (4) Eight
Solution:
Each nucleosome consists of eight histone proteins, forming a core around which
DNA is wrapped. These histones include two copies each of H2A, H2B, H3, and H4.
Quick Tip
Histone proteins help in the packing of DNA in the chromatin structure. Re-
member the ”octamer” of histones in the nucleosome.
3
5. Select the observations drawn from the human genome project which
are correct.
(A) The human genome contains 3164.7 million bp.
(B) The average gene consists of 3000 bases.
(C) Total number of genes is estimated at 30,000.
(D) The functions are unknown for over 50% of discovered genes.
(E) Less than 2% of the genome codes for proteins.
Choose the correct answer from the options given below:
(1) (A), (B), (C) and (D) only
(2) (A), (C), (D) and (E) only
(3) (A), (C) and (E) only
(4) (A), (B), (C), (D) and (E)
Answer: (4) (A), (B), (C), (D) and (E)
Solution:
The Human Genome Project revealed that the human genome contains approxi-
mately 3164.7 million base pairs. It was also found that the average gene consists of
around 3000 bases and that the total number of genes is around 30,000. Moreover,
lessthan2%ofthegenomecodesforproteins, andover50%ofdiscoveredgeneshave
unknown functions.
Quick Tip
In questions related to the Human Genome Project, always focus on gene
counts, protein-coding percentages, and base pair information.
6. Match List-I with List-II:
4
Page 5


CUET Biology Question Paper 2024 Set A with Solutions
1. Analogous structures are a result of:
(1) Convergent evolution
(2) Divergent evolution
(3) Parallel evolution
(4) Retrogressive evolution
Answer: (1) Convergent evolution
Solution:
Analogous structures arise due to convergent evolution, where di?erent species
evolvesimilartraitsindependentlybecausetheyfacesimilarenvironmentalpressures
or niches. For example, the wings of birds and bats are analogous structures.
Quick Tip
Analogous structures serve similar functions but have di?erent evolutionary
origins. Remember, analogous structures result from convergent evolution,
not common ancestry.
2. Which of the following does not a?ect the Hardy-Weinberg equilib-
rium?
1
(1) Natural selection
(2) Genetic drift
(3) Gene pool
(4) Gene migration
Answer: (3) Gene pool
Solution:
The Hardy-Weinberg equilibrium is disturbed by factors such as natural selection,
genetic drift, gene migration, and mutation. However, the gene pool refers to the
total genetic diversity within a population and doesn’t disturb the equilibrium by
itself.
Quick Tip
Rememberthatfactorslikenaturalselection,mutation,migration,andgenetic
drifta?ecttheHardy-Weinbergequilibrium,butthegenepoolitselfisaneutral
term.
3. Which of the following primates was more like an ape?
(1) Homo erectus
(2) Dryopithecus
(3) Australopithecines
(4) Ramapithecus
Answer: (2) Dryopithecus
Solution:
2
Dryopithecus was an extinct genus of apes and is considered to have been more
like modern apes. It lived during the Miocene and is believed to be an ancestor of
modern great apes and humans.
Quick Tip
For primate evolution, remember that Dryopithecus is closely related to apes,
while Australopithecines and Homo erectus are more closely linked to human
ancestors.
4. Nucleosome is associated with molecules of histones.
(1) Four
(2) Nine
(3) Two
(4) Eight
Answer: (4) Eight
Solution:
Each nucleosome consists of eight histone proteins, forming a core around which
DNA is wrapped. These histones include two copies each of H2A, H2B, H3, and H4.
Quick Tip
Histone proteins help in the packing of DNA in the chromatin structure. Re-
member the ”octamer” of histones in the nucleosome.
3
5. Select the observations drawn from the human genome project which
are correct.
(A) The human genome contains 3164.7 million bp.
(B) The average gene consists of 3000 bases.
(C) Total number of genes is estimated at 30,000.
(D) The functions are unknown for over 50% of discovered genes.
(E) Less than 2% of the genome codes for proteins.
Choose the correct answer from the options given below:
(1) (A), (B), (C) and (D) only
(2) (A), (C), (D) and (E) only
(3) (A), (C) and (E) only
(4) (A), (B), (C), (D) and (E)
Answer: (4) (A), (B), (C), (D) and (E)
Solution:
The Human Genome Project revealed that the human genome contains approxi-
mately 3164.7 million base pairs. It was also found that the average gene consists of
around 3000 bases and that the total number of genes is around 30,000. Moreover,
lessthan2%ofthegenomecodesforproteins, andover50%ofdiscoveredgeneshave
unknown functions.
Quick Tip
In questions related to the Human Genome Project, always focus on gene
counts, protein-coding percentages, and base pair information.
6. Match List-I with List-II:
4
List-I List-II
Placental mammals Counterpart Marsupials
(A) Anteater (I) Spotted cuscus
(B) Bobcat (II) Numbat
(C) Lemur (III) Flying Phalanger
(D) Flying squirrel (IV) Tasmanian tiger cat
Choose the correct answer from the options given below:
(1) (A) - (II), (B) - (IV), (C) - (I), (D) - (III)
(2) (A) - (II), (B) - (I), (C) - (IV), (D) - (III)
(3) (A) - (IV), (B) - (I), (C) - (II), (D) - (III)
(4) (A) - (IV), (B) - (I), (C) - (III), (D) - (II)
Answer: (1) (A) - (II), (B) - (IV), (C) - (I), (D) - (III)
Solution:
The correct match is:
(A) Anteater - (II) Numbat
(B) Bobcat - (IV) Tasmanian tiger cat
(C) Lemur - (I) Spotted cuscus
(D) Flying squirrel - (III) Flying Phalanger.
Quick Tip
When dealing with match-the-following questions, focus on identifying species
or relationships between groups.
7. Identify the incorrect statement/s:
5