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Question Bank

Question for CUET UG Biology - Quiz / Questions / MCQ in English

Last Update on : October 11, 2026

Duration: 60 · Questions: 50 · Max Marks: 50

View CUET Biology (UG) 2027 Exam Page

To boost your performance in CUET UG Biology exam, practice each question regularly and with focus. Every question tests your subject understanding, so solve them one at a time. Taking a quiz improves your speed and accuracy. Practicing topic-wise MCQs. Students benefit greatly from reviewing questions with answer keys, which help clarify concepts and strengthen Questions knowledge for success in CUET UG Biology exams.

Latest CUET UG Biology Exam Question (Objective Questions), MCQ in English

Subjects : Biology

Question Bank CUET UG Biology Exam - English

Biology

Q 1 :
The respiratory quotient during cellular respiration would depend on
  1. A.the nature of enzymes involved
  2. B.the nature of the substrate
  3. C.the amount of carbon dioxide released
  4. D.the amount of oxygen utilised
Q 2 :
Which of the following is not a green - house gas ?
  1. A.Water vapour
  2. B.Carbon monoxide
  3. C.Methane
  4. D.Oxygen
Q 3 :
Both husband and wife have normal vision though their fathers were colorblind and mothers did not have any gene for colorblindness. The probability of their daughters becoming colorblind is
  1. A.50%          
  2. B.75%
  3. C.0% 
  4. D.25%
Q 4 :
An animal, which has both exoskeleton and endoskeleton structures is a
  1. A.fresh-water mussel
  2. B.tortoise
  3. C.frog
  4. D.jelly fish
Q 5 :
Identify the group, which includes animals all of which give birth to young ones directly?
  1. A.Dolphin, kangaroo, bat, cat
  2. B.Platypus, penguin, bat, hippopotamus
  3. C.shrew, bat, kiwi, car
  4. D.Lion, whale, ostrich, bat
Q 6 :
Compare the statement A and B.
Statement A Blood sugar level falls rapidly after hepatectomy.
Statement B The glycogen of the liver is the principal source of blood sugar.
Select the correct description.
  1. A.Both the statements A and B are correct and B is the reason for A
  2. B.Statement A is correct and B is wrong
  3. C.Statement A is wrong and B is correct
  4. D.Both the statements A and B are correct and B is not the reason for A
Q 7 :
What is/are true about heart wood?
(A) It does not help in water conduction.
(B) It is also called laburnum.
(C) It is dark in colour but very soft.
(D) It has tracheary elements which are filled with tannin, resin, etc.
  1. A.B,C and D
  2. B.A and D
  3. C.B and D
  4. D.A, B and C
Q 8 :
Compare the statements A and B.
Statement A Auxins promote apical dominance by suppressing the activity of lateral buds.
Statement B In moriculature, periodic pruning of shoot tips is done to make mulberry plants bushy.
Select the correct description.
  1. A.Both the statements A and B are correct and A is the reason for B
  2. B.Statement A is correct and B is wrong
  3. C.Statement A is wrong and B is correct
  4. D.Both the statements A and B are correct and A is not the reason for B
Q 9 :
Bryophytes resemble algae is the following aspects
  1. A.Filamentous body, presence of vascular tissues and autotrophic nutrition
  2. B.Differentiation of plant body into root, stem and leaves and autotrophic nutrition
  3. C.Thallus like plant body, presence of roots and autotrophic nutrition
  4. D.Thallus like plant body, lack of vascular tissues and autotrophic nutrition
Q 10 :
Stoma opens, when
  1. A.guard cells swell due to an increase in their water potential
  2. B.guard cells swell by endosmosis duie to influx of hydrogen ions (protons)
  3. C.guard cells swell by endosmosis due to efflux of potassium ions
  4. D.guard cell swell due to a decrease in their water potential
Q 11 :
Which of the following is properly matched ?
  1. A.Platyhelminthes –Trematoda – Planoria
  2. B.Echinodermate – Asteroidea – Star fish
  3. C.arthropoda – Insecta – Spider
  4. D.Mollusca – Cephalopoda – Unio
Q 12 :
A man is admitted to a hospital. He is suffering from an abnormally low body temperature, loss of appetite and extreme thirst. His brain scan would probably show a tumour in
  1. A.medulla oblongata
  2. B.pons
  3. C.cerebellum 
  4. D.hypothalamus
Q 13 :
The agents, which are known to cause CJD are
  1. A.protein particles
  2. B.a class of bacteria
  3. C.a class of viruses
  4. D.fungi
Q 14 :
In crop improvement programmers, virus-free clones can be obtained through
  1. A.grafting
  2. B.hybridization
  3. C.embryo culture 
  4. D.shoot apex culture
Q 15 :
A person is suffering from frequent episodes of nasal discharge, nasal congestion, reddening of eyes and watery eyes. These are the symptoms of
  1. A.cyanosis
  2. B.bronchitis
  3. C.rhinitis
  4. D.bronchial carcinoma
Q 16 :
Some important events in the human female reproductive cycle are given below. Arrange the events in a proper sequence.
A: Secretion of FSH
B: Growth of corpus luteum
C: Growth of the follicle and oogenesis
D: Ovulation
E: Sudden increase in the levels of LH
 
  1. A.C → A → D → B → E
  2. B.A → C → E → D → B
  3. C.A → D → C → E → B
  4. D.B → A → C → D → E
Q 17 :
Which of the following options shows bisexual animals only ?
  1. A.Amoeba, sponge, leech
  2. B.Sponge, cockroach, Amoeba
  3. C.Earthworm, sponge, leech
  4. D.Tapeworm, earthworm, honeybee
Q 18 :
Vaccination against small pox was developed by:
  1. A.Louis Pasteur
  2. B.Edward jenner
  3. C.Robert Koch
  4. D.Alexander Flemming
Q 19 :
The value of human diastolic blood pressure is :
  1. A.120 – 80 = 40 mm. Hg
  2. B.120 mm. Hg
  3. C.80 mm. Hg
  4. D.128/80 mm. Hg
Q 20 :
Balance theory of sex determination holds good for:
  1. A.Allium cepa
  2. B.Drosophila
  3. C.Humans
  4. D.grasshoppers
Q 21 :
the plants respond to photo – periods due to the presence of :
  1. A.Phytochromes
  2. B.Stomata
  3. C.Enzymes
  4. D.Phytohormones
Q 22 :
Identify the edible fresh-water telesots:
  1. A.Sharks
  2. B.Rays and skates
  3. C.Hilsa ilisha
  4. D.Catla catla
Q 23 :
Plasmids occur in:
  1. A.Viruses
  2. B.Chromosomes
  3. C.Bacteria
  4. D.Chloroplasts
Q 24 :
Match the names of antibiotics listed under column 1 with their source given under column 2; choose the correct combination of alphabets of the two columns:
  Column 1   Column 2
A
 
B
 
C
 
D		 Neomycin
 
Terramycin
 
Viridian
 
penicillin		 p
 
q
 
r
 
s		 Streptomyces fradiae
Penicillium notatum
Streptomyces rimosus
Gliocladium virens
  1. A.A = r, B = p, C = s, D = q
  2. B.A = r, B = s, C = p, D = q
  3. C.A = p, B = r, C = s, D = q
  4. D.A = s, B = p, C = r, D = q
Q 25 :
The bond formed between the first phosphate group and adenosine in ATP is:
  1. A.Nitro – phosphate bond
  2. B.Adeno – phosphate bond
  3. C.Phosphoester bond
  4. D.Phosphoanhydride bond
Q 26 :
Which of the following contain enzymes for cellular respiration ?
  1. A.Dictyosomes
  2. B.Endoplasmic reticulum
  3. C.lysosomes
  4. D.Mitochondria
Q 27 :
Which one among the following nutrients is a strctural
  1. A.Cell membrane
  2. B.Plasma membrane
  3. C.Cell wall
  4. D.Nucleus
Q 28 :
Which one among the following nutrients is a structural component of the cell wall of plants ?
  1. A.Manganese
  2. B.Potassium
  3. C.Phosphorus
  4. D.Calcium
Q 29 :
Which of the following groups is present in animal cells ?
  1. A.Mitochondria, Cell membrane, Cell wall, Cytoplasm
  2. B.Chloroplasts, Cytoplasm, Vacuole, Nucleus
  3. C.Nucleus, Cell membrane, Mitochondria, Cytoplasm
  4. D.Vacuole, cell membrane, Nucleus, Mitochondria
Q 30 :
For which among the following is not a true fruit ?
  1. A.Apple
  2. B.Date
  3. C.Grape
  4. D.Plum
Q 31 :
Which one of the following is not a constituent of cell membrane ?
  1. A.Cholesterol
  2. B.Glycoplids
  3. C.Proline
  4. D.Phospholipids
Q 32 :
The replication of DNA is a pre-requisite for a eukaryotic cell to undergo division. During the cell cycle, the DNA replicates in
  1. A.S–phase
  2. B.G1–phase
  3. C.G2–phase
  4. D.M-phase
Q 33 :
During which stage of mitosis does cytokinesis usually occur in animals ?
  1. A.Phophase
  2. B.Metaphase
  3. C.Anaphase
  4. D.Telophase
Q 34 :
Lysosome arises from
  1. A.endoplasmic reticulum
  2. B.golgi apparatus
  3. C.nucleus
  4. D.mitochondria
Q 35 :
The correct sequence of cell cycle is
  1. A.S, G1, G2, M
  2. B.S, M, G1, G2
  3. C.G1, S, G2, M
  4. D.M, G1, G2, S
Q 36 :
Biological membranes are composed of
  1. A.40% proteins and 60% lipids
  2. B.50% proteins and 50% lipids
  3. C.70% proteins and 30% lipids
  4. D.60% proteins and 40% lipids
Q 37 :
F1 particles / oxysome / elementary particles are present in
  1. A.endoplasmic reticulum
  2. B.chloroplast
  3. C.mitochondria
  4. D.golgi complex
Q 38 :
"Endomitosis" refers to
  1. A.division of nucleus without chromosomal division
  2. B.division of chromosome without nuclear division
  3. C.division of cytoplasm
  4. D.None of the above
Q 39 :
When the concentration of water and solutes on either side of the cell membrane is same, the solution is said to be
  1. A.hypertonic
  2. B.isotonic
  3. C.hypotonic
  4. D.None of these
Q 40 :
The function of nucleous is the synthesis of
  1. A.DNA
  2. B.m - RNA
  3. C.r- RNA
  4. D.t - RNA
Q 41 :
Mesosome in a bacterial cell is
  1. A.plasmid
  2. B.connection between two cells
  3. C.plasma membrane infolded for respiration
  4. D.None of these
Q 42 :
In living cels synthesis of ribonoucleic acid (RNA) takes place in :
  1. A.Cytoplasm
  2. B.Nucleus
  3. C.Golgi body
  4. D.Nephron
Q 43 :
The cell organelle storing substances like starch, oil and proteins is
  1. A.Vacuole
  2. B.Lysosome
  3. C.Plastid
  4. D.Golgi body
Q 44 :
Organisms lacking nuclear membrane and cell organelles is called as :
  1. A.Prokaryotes
  2. B.Eukaryotes
  3. C.Protozoa
  4. D.Virus
Q 45 :
Cell organelles that are involved in the waste disposal system of the cell are :
  1. A.Golgi apparatus
  2. B.Lysosomes
  3. C.Chromosomes
  4. D.Ribosomes
Q 46 :
Which one of the following is an organelle that is NOT found in prokaryotic cells ?
  1. A.Cell wall
  2. B.Mitochondria
  3. C.Plasma membrane
  4. D.Ribosome
Q 47 :
Which one of the following cell organelles mainly functions as storehouse of digestive enzymes ?
  1. A.Desmosome
  2. B.Ribosome
  3. C.Lysosome
  4. D.Vacuoles
Q 48 :
Cell wall of any fungus is different from plant in having
  1. A.cellulose
  2. B.chitin
  3. C.cholesterol
  4. D.glycogen
Q 49 :
In prokaryotic organisms, nuclear region is not surrounded by a membrane.This undefined nuclear region is known as
  1. A.Nucleic acid
  2. B.Nucleoid
  3. C.Nucleolus
  4. D.Nucleosome
Q 50 :
Which one of the following functions is not carried out by smooth endoplasmic reticulum ?
  1. A.Transport of materials
  2. B.Synthesis of lipid
  3. C.Synthesis of protein
  4. D.Synthesis of steroid hormone

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