CUET 2026 Biology May 22 Shift 1 Question Paper- Download Answer Key and Solution PDF

CUET 2026 May 22 Shift 1 Biology Question Paper is available for download here. NTA is conducting the CUET 2026 exam from 11th May to 31st May.

CUET 2026 Biology exam consists of 50 questions for 250 marks to be attempted in 60 minutes.
As per the marking scheme, 5 marks are awarded for each correct answer, and 1 mark is deducted for incorrect answer.

Candidates can download CUET 2026 May 22 Shift 1 Biology Question Paper with Answer Key and Solution PDF from links provided below.

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CUET 2026 Biology May 22 Shift 1 Question Paper with Solution PDF

CUET May 22 Shift 1 Biology Question Paper 2026	Download PDF	Check Solutions

Question 1:

Ribozyme is:

(A) \(23S\) rRNA
(B) \(28S\) rRNA
(C) \(18S\) rRNA
(D) \(5.8S\) rRNA

Detailed Solution

Question 2:

The species-area relationship was explained by Alexander von Humboldt. Which of the following equations correctly represents this relationship?

(A) \( S = CA^{-Z} \)
(B) \( S = CZ^{A} \)
(C) \( S = CA^{Z} \)
(D) \( S = \dfrac{C}{A^{Z}} \)

Detailed Solution

Question 3:

In the graph of species-area relationship, what does the slope of the line represent when plotted on a log-log scale?

(A) Carrying capacity
(B) Regression coefficient \( Z \)
(C) Population density
(D) Natality rate

Detailed Solution

Question 4:

During the process of making bacteria competent for recombinant DNA technology, which treatment is commonly used?

(A) Treatment with calcium chloride
(B) Treatment with sodium hydroxide
(C) Treatment with ethanol
(D) Treatment with glucose solution

Detailed Solution

Question 5:

Read the following passage carefully and answer the question that follows:

During the menstrual cycle, the endometrium undergoes cyclic changes under the influence of hormones. Ovulation generally occurs around the 14th day of a 28-day menstrual cycle. After ovulation, the ruptured Graafian follicle transforms into a temporary endocrine gland known as corpus luteum. If fertilisation does not occur, the corpus luteum degenerates leading to menstruation.

Which hormone is mainly responsible for maintaining the endometrium after ovulation?

(A) Estrogen
(B) Progesterone
(C) Oxytocin
(D) Relaxin

Detailed Solution

Question 6:

What is the cessation of menstrual cycle in females around the age of 45--50 years called?

(A) Menarche
(B) Menopause
(C) Ovulation
(D) Gestation

Detailed Solution

Question 7:

The corpus luteum mainly secretes which of the following hormones?

(A) Testosterone
(B) Progesterone
(C) FSH
(D) LH

Detailed Solution

Question 8:

In the menstrual cycle, the LH surge is primarily responsible for:

(A) Formation of endometrium
(B) Menstruation
(C) Ovulation
(D) Degeneration of corpus luteum

Detailed Solution

Question 9:

Which graph correctly represents the species-area relationship on a logarithmic scale?

(A) Straight line with positive slope
(B) Straight line with negative slope
(C) Circular curve
(D) Horizontal line

Detailed Solution

Question 10:

During recombinant DNA technology, why are bacterial cells kept on ice after calcium chloride treatment?

(A) To destroy plasmid DNA
(B) To reduce membrane permeability permanently
(C) To facilitate binding of DNA to cell membrane
(D) To stop bacterial respiration completely

Detailed Solution

CUET UG 2026 Exam Pattern

Parameter	Details
Exam Name	Common University Entrance Test (CUET UG) 2026
Conducting Body	National Testing Agency (NTA)
Exam Mode	Computer-Based Test (CBT)
Exam Duration	60 minutes per test
Total Sections	3 (Languages, Domain Subjects, General Test)
Question Type	Multiple Choice Questions (MCQs)
Questions per Test	50 questions (all compulsory)
Marking Scheme	+5 for correct, -1 for incorrect
Maximum Marks	250 marks per test
Maximum Subject Choices	5 subjects in total
Syllabus Base	Class 12 NCERT (mainly for Domain Subjects)

CUET UG 2026 Paper Analysis

CUET Questions

1.
Identify the statements true for RNA. (i) RNA acts as a genetic material for some viruses.
(ii) RNA also functions as an adapter molecule.
(iii) RNA has hexose sugar as its backbone.
(iv) RNA also acts as catalyst in some cases.

(i), (ii) and (iii) only
(i), (ii) and (iv) only
(ii), (iii) and (iv) only
(i), (iii) and (iv) only

View Solution

2.
Match the following conservation strategies with their corresponding examples.
Column I Column II
(A) Ex-situ Conservation (I) Biosphere Reserve
(B) In-situ Conservation (II) Wildlife Sanctuary
(C) Gene Bank (III) Cryopreservation
(D) Botanical Garden (IV) Conservation outside natural habitat
Choose the correct answer from the options given below:

Column I	Column II
(A)	Ex-situ Conservation	(I)	Biosphere Reserve
(B)	In-situ Conservation	(II)	Wildlife Sanctuary
(C)	Gene Bank	(III)	Cryopreservation
(D)	Botanical Garden	(IV)	Conservation outside natural habitat

A-IV, B-I, C-III, D-IV
A-II, B-I, C-IV, D-III
A-IV, B-II, C-III, D-IV
A-I, B-II, C-IV, D-III

View Solution

3.
Arrange the following stages of development of a dicot embryo in the order of their occurrence: (i) Formation of heart shaped embryo
(ii) Formation of typical dicot embryo
(iii) Formation of zygote
(iv) Formation of globular embryo

(i), (ii), (iii), (iv)
(iii), (iv), (i), (ii)
(iii), (i), (ii), (iv)
(iv), (i), (ii), (iii)

View Solution

4.
Match List - I with List - II. Choose the correct answer from the options given below:
List - I List - II
P. Ribosome (i) Replication
Q. Histone (ii) Transcription
R. DNA polymerase (iii) Translation
S. RNA polymerase (iv) Nucleosome

List - I	List - II
P. Ribosome	(i) Replication
Q. Histone	(ii) Transcription
R. DNA polymerase	(iii) Translation
S. RNA polymerase	(iv) Nucleosome

\(P-(i), Q-(ii), R-(iii), S-(iv)\)
\(P-(ii), Q-(i), R-(iii), S-(iv)\)
\(P-(i), Q-(ii), R-(iv), S-(iii)\)
\(P-(iii), Q-(iv), R-(i), S-(ii)\)

View Solution

5.
Match List - I with List - II (Contraception).
List - I List - II
P. Lippes loop (i) Barrier
Q. Vaults (ii) Hormone releasing device
R. Periodic abstinence (iii) Non-medicated IUDs
S. Progestasert (iv) Natural method

List - I	List - II
P. Lippes loop	(i) Barrier
Q. Vaults	(ii) Hormone releasing device
R. Periodic abstinence	(iii) Non-medicated IUDs
S. Progestasert	(iv) Natural method

P-(i), Q-(iii), R-(iv), S-(ii)
P-(iii), Q-(ii), R-(iv), S-(i)
P-(iii), Q-(i), R-(iv), S-(ii)
P-(iii), Q-(i), R-(ii), S-(iv)

View Solution

6.
The symbol \(r\) in population ecology represents

Carrying capacity
Natality rate
Intrinsic rate of natural increase
Mortality rate

View Solution

CUET 2026 Biology May 22 Shift 1 Question Paper- Download Answer Key and Solution PDF

CUET 2026 Biology May 22 Shift 1 Question Paper with Solution PDF

CUET UG 2026 Exam Pattern

CUET UG 2026 Paper Analysis

CUET Questions

1.
Identify the statements true for RNA. (i) RNA acts as a genetic material for some viruses.
(ii) RNA also functions as an adapter molecule.
(iii) RNA has hexose sugar as its backbone.
(iv) RNA also acts as catalyst in some cases.

3.
Arrange the following stages of development of a dicot embryo in the order of their occurrence: (i) Formation of heart shaped embryo
(ii) Formation of typical dicot embryo
(iii) Formation of zygote
(iv) Formation of globular embryo

4.
Match List - I with List - II. Choose the correct answer from the options given below:
List - I List - II
P. Ribosome (i) Replication
Q. Histone (ii) Transcription
R. DNA polymerase (iii) Translation
S. RNA polymerase (iv) Nucleosome

5.
Match List - I with List - II (Contraception).
List - I List - II
P. Lippes loop (i) Barrier
Q. Vaults (ii) Hormone releasing device
R. Periodic abstinence (iii) Non-medicated IUDs
S. Progestasert (iv) Natural method

6.
The symbol \(r\) in population ecology represents

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CUET 2026 Biology May 22 Shift 1 Question Paper with Solution PDF

CUET UG 2026 Exam Pattern

CUET UG 2026 Paper Analysis

CUET Questions

1.Identify the statements true for RNA. (i) RNA acts as a genetic material for some viruses. (ii) RNA also functions as an adapter molecule. (iii) RNA has hexose sugar as its backbone. (iv) RNA also acts as catalyst in some cases.

3.Arrange the following stages of development of a dicot embryo in the order of their occurrence: (i) Formation of heart shaped embryo (ii) Formation of typical dicot embryo (iii) Formation of zygote (iv) Formation of globular embryo

4.Match List - I with List - II. Choose the correct answer from the options given below: List - IList - IIP. Ribosome(i) ReplicationQ. Histone(ii) TranscriptionR. DNA polymerase(iii) TranslationS. RNA polymerase(iv) Nucleosome

5.Match List - I with List - II (Contraception). List - IList - IIP. Lippes loop(i) BarrierQ. Vaults(ii) Hormone releasing deviceR. Periodic abstinence(iii) Non-medicated IUDsS. Progestasert(iv) Natural method

6.The symbol \(r\) in population ecology represents

Comments

SUBSCRIBE TO OUR NEWS LETTER

1.
Identify the statements true for RNA. (i) RNA acts as a genetic material for some viruses.
(ii) RNA also functions as an adapter molecule.
(iii) RNA has hexose sugar as its backbone.
(iv) RNA also acts as catalyst in some cases.

3.
Arrange the following stages of development of a dicot embryo in the order of their occurrence: (i) Formation of heart shaped embryo
(ii) Formation of typical dicot embryo
(iii) Formation of zygote
(iv) Formation of globular embryo

4.
Match List - I with List - II. Choose the correct answer from the options given below:
List - I List - II
P. Ribosome (i) Replication
Q. Histone (ii) Transcription
R. DNA polymerase (iii) Translation
S. RNA polymerase (iv) Nucleosome

5.
Match List - I with List - II (Contraception).
List - I List - II
P. Lippes loop (i) Barrier
Q. Vaults (ii) Hormone releasing device
R. Periodic abstinence (iii) Non-medicated IUDs
S. Progestasert (iv) Natural method

6.
The symbol \(r\) in population ecology represents