PU CET UG 2026 Question Paper Biology

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PU CET UG 2026
Question Paper ·
Biology
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PU CET UG 2026 Question Paper Biology

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1. Rattans are a type of
(A) Climbing palms (B) Climbing pines
(C) Bamboos (D) Orchids
2. Cotton belongs to family
(A) Fabaceae (B) Gramineae (C) Malvaceae (D) Rosaceae
3. Caryopsis is the fruit in family
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(A) Asteraceae (B) Apiaceae (C) Chenopodiaceae (D) Poaceae

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4. Monoadelphous condition

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(A) Hibiscus rosa-sinensis (B) Brassica campestris

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(C) Lathyrus odoratus (D) Ranunculus arvensis
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5. Epicalyx is present in flower of
(A) Hibiscus sp. (B) Chenopodium sp.
(C) Zeuxine sp. (D) Euphorbia sp.
6. Which of the following is initiation codon?
(A) AUG (B) GGU (C) UUG (D) GUU
7. To develop root pressure, energy is used to

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(A) Actively transport minerals into root cells

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(B) Evaporate water in the leaves

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(C) Condense water in the xylem
(D) Create suction in the xylem
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8. Primary and secondary growth are inhibited
(A) Auxin (B) Gibberellins (C) Abscisic acid (D) Cytokinins
9. A physiological response to light is
(A) Photoperiodism (B) Vernalisation (C) Senescence (D) Differentiation
10. The angiosperms are unique in the possession of:
(A) Double fertilization and endosperm formation
(B) Endosperm and Polyembryony
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(C) Triple fusion and seed formation
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(D) Double fertilization and seed formation

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a (A) Macroscopic red algae (B) Macroscopic green algae
(C) Macroscopic brown algae (D) All of these
13. Reserpine is a drug obtained from
(A) Atropa belladonna (B) Rauwolfia serpentina
(C) Withania somnifera (D) Crocus sativus

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[CET-UG-26] BIO - A

14. Solanum tuberosum is believed to have originated in:
(A) Andes Region (B) Himalayan Region
(C) Nilgiris (D) Western Ghats
15. Chick Pea is
(A) Cajanus cajan (B) Cicer arietinum (C) Vigna sinensis (D) Phaseolus vulgaris
16. The gametophyte and sporophytes in Pteridophytes are:
(A) Similar to each other
(B) Gametophyte is a parasite on the sporophyte
(C) Sporophyte is a parasite on the gametophyte
(D) Independent of each other
17. Which of the following is an insectivorous plant?
(A) Bladderwort (B) Hornwort (C) Liverwort (D) Spiderwort
18. In photosynthesis, the light- independent reactions take place at
(A) Thylakoid lumen (B) Photosystem-I (C) Photosystem-II (D) Stromal matrix
19. The substrate for photorespiration
(A) Glucose (B) Ribulose bis-phosphate
(C) Serine (D) Glycine
20. Oxidative phosphorylation is
(A) Formation of ATP by energy released from electrons removed during substrate oxidation
(B) Oxidation of phosphate group in ATP
(C) Addition of phosphate group to ATP
(D) Formation of ADP by transfer of phosphate group from substrate to ATP
21. Which of the following is not an inhibitory substance governing seed dormancy?
(A) Abscisic acid (B) Phenolic acid (C) Para-ascorbic acid (D) Gibberellic acid
22. Senescence as an active developmental cellular process in growth and functioning of a
flowering plant, is indicated in
(A) Vessels and tracheid (B) Leaf abscission
(C) Annual plants (D) Floral parts
23. Sun hemp is obtained from
(A) Cocos nucifera (B) Musa texilis
(C) Crotalaria juncea (D) Gossypium hirsutum
24. Liquorice is botanically known as
(A) Tamarindus indica (B) Glycyrrhiza glabra
(C) Papaver somniferum (D) Manihot glaziovii
25. Siliqua is the fruit in family
(A) Brassicaceae (B) Apiaceae (C) Chenopodiaceae (D) Euphorbiaceae
26. Bending in response to touch is called as
(A) Nutations (B) Nyctinasty (C) Graviotropism (D) Thigmotropism
(2)

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27. Morphine is obtained from
(A) Papaver somnifera (B) Rauwolfia serpentine
(C) Digitalis purpurea (D) Withania somnifera
28. Which of the following is a non-reducing sugar?
(A) Sucrose (B) Fructose (C) Glucose (D) Mannose
29. Ovary is obliquely placed in
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(A) Brassicaceae (B) Apiaceae (C) Solanaceae (D) Papilionaceae

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(A) Parasitic em a s
30. Gametophyte of bryophytes

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(B) Autotrophic (C) Heterotrophic (D) Epiphytic
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31. Identify a ldeficiency disorder that occurs due to hypo secretion from an endocrine gland a
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a syndrome
(A) Hunter’s (B) Acromicaria
(C) Acromegaly (D) Conn’s syndrome
32. In oocytes, which of the following phase can last for months or years since at this stage that
chromosomes decondense and engage in RNA synthesis?
(A) Diakinesis (B) Pachytene (C) Diplotene (D) Leptotene
33. An alkaloid that inhibits the formation of mitotic spindle thereby arresting the cells in

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metaphase stage is
(A) Cyanide (B) Ribonuclease
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(C) Colchicine
34. Which one of the following does not belong tom
(D) CDK inhibitors

(B) Myoglobin s
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the category of the fibrous proteins?
(A) Collagen
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(D) Fibroin

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35. Select the muscle protein found in skeletal
(A) Actinin (B) Troponin (C) Myosin (D) C-protein
36. Which of the following cannot be considered as a preventive or prophylactic measure to
control microbial infection?
(A) Eradication of the vectors
(B) Periodic cleaning of the water tanks/reservoirs
(C) Vaccination

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(D) Use of antibiotics
m one of the following can be the reasons for Addison’s disease? m . the correct
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37. Which Choose

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b) Body’s immune system attacks self-cells
c) The ability to differentiate pathogen or foreign molecules from
d) Body becomes immune deficient
The answer is
(A) a & d (B) b & c (C) a, b & d (D) a & c
38. Formation of all the three primary germ layers i.e. ectoderm, endoderm and mesoderm occurs
from
(A) Trophoblast (B) Epiblast (C) Hypoblast (D) Inner cell mass

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[CET-UG-26] BIO - A

39. Which one of the following mechanism is not involved in the case of inhibitory synapse?
(A) Opening of the chloride channels through post synaptic membrane
(B) Depressed conduction through chloride or potassium channels or both
(C) Increase in the conductance of potassium ions out of the neuron
(D) Increase in the number of the inhibitory synapse receptors
40. Which of the following sensory receptor is used to detect damage occurring in tissues leading
to pain?
(A) Baroreceptor (B) Mechanoreceptor (C) Nociceptor (D) Thermoreceptor
41. A severe reduction in population size brought about suddenly by some natural calamity is
called
(A) Bottle neck effect (B) Gene flow
(C) Natural selection (D) Convergent evolution
42. Which one of the following set of structures include all homologous organs?
(A) Wings of bat, pigeon and locust
(B) Nematocyst, trochocyst and sporocyst
(C) Mouth parts of housefly, termites and rat flea
(D) Nephridia, flame cells and coxal glands
43. Choose the set of disease which generally occurs due to poor sanitary conditions
(A) Chlamydia and Chikungunya (B) Cholera and Typhoid
(C) Nipah virus disease and Scarlet fever (D) Ebola virus disease and Dengue
44. Which one of the following options gives the correct match of the disease with the causative
organism and mode of infection?
(A) Pneumonia – Haemophilus influenzae – Droplet disease
(B) Filariasis – Wuchereria bancrofti – Oral contamination
(C) Kala azar – Trypanosoma gambiense – Vector borne
(D) Typhoid – Mycobacterium typhi – Food and water borne
45. To which type of barriers under innate immunity, do the acid in stomach, the tears from the
eyes belong to
(A) Cytokine barriers (B) Inflammatory barriers
(C) Physiological barriers (D) Physical barriers
46. Which one of the following is a correct match?
(A) Cocaine – Slows down body function
(B) Smack (Heroin) – Interferes with transport of dopamine
(C) Datura – Hallucinogenic properties
(D) Barbiturates – Stimulants
47. Identify the substances that has been commercially used as blood cholesterol lowering agent
(A) Statins from fungus Trichoderma polysporum
(B) Cyclosporin A from Monascus purpureus
(C) Statins from yeast Monascus purpureus
(D) Streptokinase from bacteria Streptococcus
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48. Which one of the following microscope is used for observing living cells?
(A) Scanning Electron Microscope (B) Transmission Electron Microscope
(C) Phase Contrast Microscope (D) Polarization Microscope
49. Noble Prize in Physiology or Medicine 2025 was awarded for studies or research in the field of
(A) Cell Biology (B) Cancer Therapy (C) Neurobiology (D) Immunology

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50. Which one of the following diagnostic technique(s) can be considered as non-invasive?

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a) Ultrasound

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b) Chronic Villi Sampling

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c) Commuted Tomography Scan

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d) Mammography
e) Amniocentesis
f) Magnetic Resonance Imaging
The answer is
(A) a, c and f (B) a and f (C) c, e and f (D) a, d and f
51. Which one of the following statement is incorrect?
(A) In RNAi, the target genes are silenced using ds RNA
(B) Crops engineered for glyphosate are sensitive to herbicides

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(C) Golden rice is a GM plant created to prevent Night Blindness
(D) GM-Brinjal was developed in India for insect resistance

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52. Slow recovery of usual sensitivity to darkness
illumination is called
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(A) Light adaptation
(C) Bright adaptation
a (B) Dark adaptation
(D) All of these
53. Alternation of life cycle observed in life cycle of Obelia is
(A) Metamorphosis (B) Molting (C) Metagenesis (D) Neoteny
54. A person undergoing hemodialysis due to malfunctional kidney will have
(A) Anaemic condition

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(B) Decreased absorption of calcium from gut

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(C) Hyperkalemia

c.55.oWhich one of the following favors the formation of dilute urine? m
(D) Both A and B

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la 56. Myogenic heart is characteristic feature of vertebrates as well as a
(B) ANF (C) Aldosterone

ag (A) Arthropoda (B) Mollusca (C) Annelida (D) Nematoda
57. Atrial repolarization is not observed on electro cardiogram of healthy human as
(A) It coincides with T-wave (B) Does not exist in Q
(C) Coincides with R interval (D) Gets masked by QRS complex

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[CET-UG-26] BIO - A

58. Which one of the following methods of contraception inhibits ovulation?
a) Multi load 375 (IUD)
b) Oral pills
c) Saheli
d) Lactational amenorrhea
e) Implants
f) Tubectomy
The answer is
(A) a, b, d and e (B) b, d and e (C) b and e (D) b, e and f
59. Myelin sheath on myelinated nerve tract inside CNS is produced by
(A) Schwann cells (B) Ependymal cells (C) Oligodendrocytes (D) Astrocytes
60. Inulin, a polysaccharide is generally used to determine Glomerular Filtration Rate because
(A) It can be administered orally
(B) It can be easily stored in the body
(C) It cannot be stored or metabolized in body or reabsorbed in kidney
(D) It is partially reabsorbed by nephron
x-x-x
(ROUGH WORK)

(6)

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(ROUGH WORK)

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(7)

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[CET-UG-26] BIO - A

(8)

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