CUET Sample Paper for Biology

CUET UG
ENTRANCE
SAMPLE PAPER
2023
SAMPLE PAPERS • PRACTICE
QUESTION PAPERS • YEAR 2023 •
PDF DOWNLOAD • FREE READING

2023 JUNE
MAY 2023

AGLASEM
Mock Test | Study Material | Notes

More Information: www.

CUET 2023 Overview

CUET is a Common entrance exam. The full form of CUET is Common University Entrance Test. It
is organized by National Testing Agency at a National level. It is organized by National Testing
Agency as a National level exam in India for admission in All Central Universities, and State, Deemed,
Private Universities accepting CUET scores.

Highlights of the examination are as follows.

Aspects Details

Name of Exam CUET 2023

Full Form of CUET Common University Entrance Test

Organizing Body NTA

Full Form of NTA National Testing Agency

Type of Exam Common Entrance Exam

Level of Exam National

Region India

Official Website cuet.samarth.ac.in

Courses Where BA, BCA, B.Sc, B.Com, BJMC, B.Pharm, D.Pharm, B.Tech, B.Voc, BVA,
Admission is Through BFA, BPA, BSW, Integrated MA Integrated B.Ed, Integrated M.Sc,
CUET Integrated B.Tech-M.Tech, Integrated MPA, BA LLB, BBA LLB, Diploma,
Shastri,

Colleges Where All Central Universities, and State, Deemed, Private Universities acepting
Admission is Through CUET scores
CUET

Minimum Educational Class 12th
Qualification

Mode of Exam Computer Based Test-CBT

Type of Questions Objective type with Multiple Choice Questions

Marking Scheme +5, -1

CUET 2023 Exam Pattern

The exam pattern is as follows

▪ Mode of Exam – The exam is a Computer Based Test-CBT.
▪ Question type – The questions are Objective type with Multiple Choice Questions.
▪ Number of Subjects – A candidate can choose upto 10 Subjects for giving the Exam.
▪ Language of Question Paper – The question paper is in 13 languages (Assamese, Bengali,
English, Gujarati, Hindi, Kannada, Malayalam, Marathi, Punjabi, Odia, Tamil, Telugu, and
Urdu).

Marking Scheme –
▪ Candidates get +5 marks for correct answer.
▪ And negative marks is -1 for incorrect answers

List of Languages/ Domain Specific Subjects /General Test offered under CUET (UG)-2023

Sample Paper
CUET 2023
Biology

Q.No. 1 In malignant tumors, the cells proliferate, grow rapidly and move to other parts of the body to form
new tumors. This stage of disease is called:

(A) metagenesis

(B) metastasis

(C) teratogenesis

(D) mitosis

Q.No. 2 With regard to mature mRNA in eukaryotes:

(A) exons and introns do not appear in the mature RNA

(B) exons and introns do not appear in the mature RNA

(C) introns appear but exons do not appear in the mature RNA

(D) both exons and introns appear in the mature RNA

Q.No. 3 Which of the following steps are catalysed by Taq DNA polymerase in a PCR reaction?

(A) Denaturation of template DNA

(B) Annealing of primers to template DNA

(C) Extension of primer end on the template DNA

(D) All of the above

Q.No. 4 In sickle cell anaemia glutamic acid is replaced by valine. Which one of the following triplets codes
for valine?

(A) G G G

(B) A A G

(C) G A A

(D) G U G

Q.No. 5 Fossils are generally found in:

(A) Sedimentary rocks

(B) Igneous rocks

(C) Metamorphic rocks

(D) Any type of rock
---

Q.No. 6 Catalytic converters are fitted into automobiles to reduce emission of harmful gases. Catalytic
converters change unburnt hydrocarbons into :

(A) carbon dioxide and water
CUET 2023
(B) carbon monoxide

(C) methane

(D) carbon dioxide and methane

Q.No. 7 Which of the following statements is correct about the role of regulatory proteins in transcription in
prokaryotes?

(A) They only increase expression

(B) They only decrease expression

(C) They interact with RNA polymerase but do not affect the expression

(D) They can act both as activators and as repressors

Q.No. 8 The reservoir for the gaseous type of bio-geo chemical cycle exists in

(A) stratosphere

(B) atmosphere

(C) ionosphere

(D) lithosphere

Q.No. 9 In virus-infected plants the meristematic tissues in both apical and axillary buds are free of virus
because:

(A) the dividing cells are virus resistant

(B) meristems have anti viral compounds

(C) the cell division of meristems are faster than the rate of viral multiplication

(D) Viruses cannot multiply within meristem cell

Q.No. 10 Which of the following is not a producer ?

(A) Spirogyra

(B) Agaricus

(C) Volvox

(D) Nostoc

Q.No. 11 The human chromosome with the highest and least number of genes in them are respectively:

(A) Chromosome 21 and Y

(B) Chromosome 1 and X

(C) Chromosome 1 and Y
---

(D) Chromosome X and Y

Q.No. 12 To initiate translation, the mRNA first binds to :

(A) The smaller ribosomal sub-unitCUET 2023
(B) The larger ribosomal sub-unit

(C) The whole ribosome

(D) No such specificity exists.

Q.No. 13 In RNAi, genes are silenced using:

(A) ss DNA

(B) ds DNA

(C) ds RNA

(D) ss RNA

Q.No. 14 In 2005, for each of the 14 million people present in a country, 0.028 were born and 0.008 died
during the year. Using exponential equation, the number of people present in 2015 is predicted as:

(A) 25 millions

(B) 17 millions

(C) 20 millions

(D) 18 millions

Q.No. 15 Diseases are broadly grouped into infectious and non-infectious diseases. In the list given below,
identify the infectious diseases. i. Cancer ii. Influenza iii. Allergy iv. Small pox

(A) i and ii

(B) ii and iii

(C) iii and iv

(D) ii and iv

Q.No. 16 What is common to the techniques (i) in vitro fertilisation, (ii) Cryopreservation and (iii) tissue
culture?

(A) All are in situ conservation methods.

(B) All are ex situ conservation methods

(C) All require ultra modern equipment and large space

(D) All are methods of conservation of extinct organisms.

Q.No. 17 Bt cotton is not:

(A) A GM plant

(B) Insect resistant
---

(C) A bacterial gene expressing system

(D) Resistant to all pesticides

CUET 2023
Q.No. 18 Which of the following is not a lymphoid tissue ?

(A) Spleen

(B) Tonsils

(C) Pancreas

(D) Thymus

Q.No. 19 Acrosomal reaction of the sperm occurs due to:

(A) Its contact with zona pellucida of the ova.

(B) Reactions within the uterine environment of the female.

(C) Reactions within the epididymal environment of the male.

(D) Androgens produced in the uterus.

Q.No. 20 The inheritance pattern of a gene over generations among humans is studied by the pedigree
analysis. Character studied in the pedigree analysis is equivalent to:

(A) quantitative trait

(B) Mendelian trait

(C) polygenic trait

(D) maternal trait

Q.No. 21 If the sequence of nitrogen bases of the coding strand of DNA in a transcription unit is: 5' - A T G
A A T G - 3' the sequence of bases in its RNA transcript would be;

(A) 5' - A U G A A U G - 3'

(B) 5' - U A C U U A C - 3'

(C) 5' - C A U U C A U - 3'

(D) 5' - G U A A G U A - 3'

Q.No. 22 A collection of all the alleles of all the genes of a crop plant is called:

(A) germplasm collection

(B) protoplasm collection

(C) herbarium

(D) somaclonal collection.

Q.No. 23 Choose the correct statement from the following:

(A) Cleistogamous flowers always exhibit autogamy

(B) Chasmogamous flowers always exhibit geitonogamy
---

(C) Cleistogamous flowers exhibit both autogamy and geitonogamy

(D) Chasmogamous flowers never exhibit autogamy

CUET 2023
Q.No. 24 The outermost and innermost wall layers of microsporangium in an anther are respectively:

(A) Endothecium and tapetum

(B) Epidermis and endodermis

(C) Epidermis and middle layer

(D) Epidermis and tapetum

Q.No. 25 BOD of waste water is estimated by measuring the amount of :

(A) total organic matter

(B) biodegradable organic matter

(C) oxygen evolution

(D) oxygen consumption

Q.No. 26 More than 70 per cent of livestock population is found in:

(A) Denmark

(B) India

(C) China

(D) India and China.

Q.No. 27 Mendel’s Law of independent assortment holds good for genes situated on the:

(A) non-homologous chromosomes

(B) homologous chromosomes

(C) extra nuclear genetic element

(D) same chromosome

Q.No. 28 Autogamy can occur in a chasmogamous flower if:

(A) Pollen matures before maturity of ovule

(B) Ovules mature before maturity of pollen

(C) Both pollen and ovules mature simultaneously

(D) Both anther and stigma are of equal lengths

Q.No. 29 Which of the following exhibits biomagnification?

(A) SO₂

(B) Mercury

(C) DDT
---

(D) Both b & c

Q.No. 30 An explant is:

(A) dead plant CUET 2023
(B) part of the plant

(C) part of the plant used in tissue culture

(D) part of the plant that expresses a specific gene.

Q.No. 31 Which of the following type of ecosystem is expected in an area where evaporation exceeds
precipitation, and mean annual rainfall is below 100mm

(A) Grassland

(B) Shrubby forest

(C) Desert

(D) Mangrove

Q.No. 32 The term ‘totipotency’ refers to the capacity of a :

(A) cell to generate whole plant

(B) bud to generate whole plant

(C) seed to germinate

(D) cell to enlarge in size

Q.No. 33 The disease chikunguniya is transmitted by:

(A) house fly

(B) Aedes mosquito

(C) cockroach

(D) female Anopheles

Q.No. 34 Wastewater treatment generates a large quantity of sludge, which can be treated by :

(A) anaerobic digesters

(B) floc

(C) chemicals

(D) oxidation pond

Q.No. 35 Person having genotype IAIB would show the blood group as AB. This is because of:

(A) Pleiotropy

(B) Co-dominance

(C) Segregation
---

(D) Incomplete dominance

Q.No. 36 The green scum seen in the fresh water bodies is :

(A) blue green algae CUET 2023
(B) red algae

(C) green algae

(D) both (a) and (c)

Q.No. 37 Which of the following bacteria is not a source of restriction endonuclease ?

(A) Haemophilus influenzae

(B) Escherichia coli

(C) Entamoeba coli

(D) Bacillus amyloliquefaciens

Q.No. 38 Which of the following hormones is not secreted by human placenta?

(A) hCG

(B) Estrogens

(C) Progesterone

(D) LH

Q.No. 39 Match the animals given in column I with their location in column II

Choose the correct match from the following

(A) A-i, B-iii, C-ii, D-iv

(B) A-iv, B-iii, C-i, D-ii

(C) A-iii, B-i, C-ii, D-iv

(D) A-iii, B-i, C-iv, D-ii

Q.No. 40 Tobacco consumption is known to stimulate secretion of adrenaline and nor-adrenaline. The
component causing this could be :

(A) Nicotine

(B) Tannic acid

(C) Curamin

(D) Catechin
---

Answer Sheet
Q.No Answer
Q.No. 1 CUET 2023
(B)
Q.No. 2 (B)
Q.No. 3 (C)
Q.No. 4 (D)
Q.No. 5 (A)
Q.No. 6 (A)
Q.No. 7 (D)
Q.No. 8 (B)
Q.No. 9 (C)
Q.No. 10 (B)
Q.No. 11 (C)
Q.No. 12 (A)
Q.No. 13 (C)
Q.No. 14 (B)
Q.No. 15 (D)
Q.No. 16 (B)
Q.No. 17 (D)
Q.No. 18 (C)
Q.No. 19 (A)
Q.No. 20 (B)
Q.No. 21 (A)
Q.No. 22 (A)
Q.No. 23 (A)
Q.No. 24 (D)
Q.No. 25 (D)
Q.No. 26 (D)
Q.No. 27 (A)
Q.No. 28 (C)

Q.No. 29 (D)
Q.No. 30 (C)
Q.No. 31 (C)
Q.No. 32 (A)
Q.No. 33 (B)
Q.No. 34 (A)
Q.No. 35 (B)
Q.No. 36 (D)
---

Q.No. 37 (C)
Q.No. 38 (D)
Q.No. 39 (D)
CUET 2023
Q.No. 40 (A)
---