LU B.Sc Entrance Previous Year Question Paper Pattern – Model Paper Set 4 (2027) with Answers

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Q1. In meiosis, the daughter cells are not similar to that of parent because of ?
अर्धसूत्री विभाजन में संतति कोशिकाएँ जनक के समान क्यों नहीं होतीं ?

1. (A) Crossing over
2. (B) Mitosis
3. (C) Fertilisation
4. (D) Mutation only

Q2. Chromosome (genetic) maps were first prepared by

1. (A) William Bateson
2. (B) T.H. Morgan
3. (C) A.H. Sturtevant
4. (D) Gregor Mendel

Q3. Glomeruli of the kidney are confined to the

1. (A) Ureter
2. (B) Medulla
3. (C) Renal pelvis
4. (D) Cortex

Q4. Organs with anatomical similarity but performing different functions are called

1. (A) Convergent evolution
2. (B) Analogous structures
3. (C) Homologous structure
4. (D) Vestigial organs

Q5. The external opening of the penis is called the

1. (A) Glans penis
2. (B) Scrotum
3. (C) Urethral meatus
4. (D) Foreskin

Q6. Ringworm infection is generally acquired from

1. (A) Mosquito bite
2. (B) Contaminated water only
3. (C) Blood transfusion
4. (D) Soil, towels, clothes or combs of infected persons

Q7. Locomotion of the earthworm involves

1. (A) Cilia
2. (B) Parapodia
3. (C) Muscles and setae
4. (D) Flagella

Q8. The layer of cells covering the cerebral hemispheres is the

1. (A) Corpus callosum
2. (B) Medulla oblongata
3. (C) Cerebellum
4. (D) Cerebral cortex

Q9. Head, foot and visceral mass are diagnostic features of

1. (A) Echinodermata
2. (B) Annelida
3. (C) Molluscs
4. (D) Arthropoda

Q10. Brush-bordered cuboidal epithelium is present in the

1. (A) Collecting duct
2. (B) Bowman's capsule
3. (C) Proximal convoluted tubule
4. (D) Loop of Henle

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Q11. Meiosis is evolutionarily significant because it results in

1. (A) Recombination (genetic variation)
2. (B) Identical cells
3. (C) Polyploidy
4. (D) Mutation only

Q12. Chromatin is essentially composed of ?
क्रोमैटिन मुख्यतः किससे बना होता है ?

1. (A) Proteins and lipids
2. (B) DNA and histones
3. (C) RNA and lipids
4. (D) DNA only

Q13. The shape of the human uterus is

1. (A) Oval
2. (B) Tubular
3. (C) Inverted pear
4. (D) Spherical

Q14. The gizzard of Pheretima (earthworm) is meant for

1. (A) Absorbing food
2. (B) Crushing (grinding) food
3. (C) Storing food
4. (D) Secreting enzymes

Q15. All types of succession ultimately lead to a

1. (A) Pioneer community
2. (B) Hydric climax only
3. (C) Mesic climax community
4. (D) Xeric climax only

Q16. A freshwater sponge is

1. (A) Euspongia
2. (B) Spongilla
3. (C) Hydra
4. (D) Sycon

Q17. Which cells release histamine and are involved in inflammatory reactions?

1. (A) Platelets
2. (B) Erythrocytes
3. (C) B-lymphocytes
4. (D) Basophils

Q18. A persistent increase in blood pressure is called

1. (A) Hypertension
2. (B) Atherosclerosis
3. (C) Hypotension
4. (D) Tachycardia

Q19. Hydrolytic enzymes are abundantly found in

1. (A) Lysosome
2. (B) Golgi bodies
3. (C) Ribosomes
4. (D) Centrosomes

Q20. A protein or polysaccharide molecule that stimulates antibody formation is an

1. (A) Antigen
2. (B) Hormone
3. (C) Interferon
4. (D) Antibody

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Q21. The best material for studying mitosis in the laboratory is

1. (A) Root tip
2. (B) Pollen grain
3. (C) Mature stem
4. (D) Leaf epidermis

Q22. The main area of cellular activities in plant and animal cells is the

1. (A) Cell wall
2. (B) Cytoplasm
3. (C) Nucleus
4. (D) Vacuole

Q23. The main cell type seen in a tendon is

1. (A) Fibroblasts
2. (B) Osteoblasts
3. (C) Adipocytes
4. (D) Chondrocytes

Q24. The primary immune response produced on first encounter with a pathogen is of

1. (A) High intensity
2. (B) Absent
3. (C) Low intensity
4. (D) Very fast

Q25. In pregnancy, the corpus luteum persists under the influence of

1. (A) hCG (chorionic gonadotropin)
2. (B) Oxytocin
3. (C) Prolactin
4. (D) FSH

Q26. Normal human body temperature is about

1. (A) 35 °C
2. (B) 39 °C
3. (C) 40 °C
4. (D) 37 °C

Q27. The largest gland of the human body is the

1. (A) Liver
2. (B) Thyroid
3. (C) Pancreas
4. (D) Pituitary

Q28. Malaria is caused by

1. (A) Plasmodium (protozoan)
2. (B) Bacteria
3. (C) Virus
4. (D) Fungus

Q29. The number of chromosomes in a normal human somatic cell is

1. (A) 48
2. (B) 23
3. (C) 46
4. (D) 44

Q30. Haemoglobin is present in

1. (A) Plasma
2. (B) RBC
3. (C) Platelets
4. (D) WBC

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Q31. The mature male gametophyte of angiosperms is the

1. (A) Pollen grain
2. (B) Ovule
3. (C) Embryo sac
4. (D) Megaspore

Q32. Nutrient mobilisation (and delay of senescence) is promoted by

1. (A) Ethylene
2. (B) Auxin
3. (C) Gibberellin
4. (D) Cytokinin

Q33. The lowest (basic) category of taxonomic classification is

1. (A) Genus
2. (B) Species
3. (C) Family
4. (D) Order

Q34. The fastest phase of the S-shaped (sigmoid) growth curve is the

1. (A) Stationary phase
2. (B) Lag phase
3. (C) Decline phase
4. (D) Log phase

Q35. Formation of seeds without fertilisation is called

1. (A) Polyembryony
2. (B) Apomixis
3. (C) Parthenocarpy
4. (D) Vegetative propagation

Q36. The C₄ (Hatch–Slack) pathway takes place in

1. (A) Rice
2. (B) Sugarcane
3. (C) Potato
4. (D) Wheat

Q37. Polar nuclei are located in the

1. (A) Anther
2. (B) Pollen tube
3. (C) Embryo sac
4. (D) Integument

Q38. Kinetin is a modified form of the base

1. (A) Adenine
2. (B) Guanine
3. (C) Uracil
4. (D) Cytosine

Q39. Organisms that do not derive energy directly or indirectly from the sun are

1. (A) Herbivores
2. (B) Green plants
3. (C) Fungi
4. (D) Chemosynthetic bacteria

Q40. Coleorhiza and coleoptile are the protective sheaths covering, respectively, the

1. (A) Plumule, radicle
2. (B) Embryo, seed coat
3. (C) Cotyledon, endosperm
4. (D) Radicle, plumule

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Q41. Gorilla is placed in the order

1. (A) Rodentia
2. (B) Carnivora
3. (C) Primates
4. (D) Chiroptera

Q42. The small pore on the seed coat is the

1. (A) Micropyle
2. (B) Chalaza
3. (C) Hilum
4. (D) Raphe

Q43. The epidermis usually consists of a

1. (A) Many layers
2. (B) Absent
3. (C) Single layer
4. (D) Two layers

Q44. The dominant phase in the life cycle of bryophytes is the

1. (A) Sporophyte
2. (B) Protonema only
3. (C) Both equally
4. (D) Gametophyte

Q45. The inner layer of the seed coat is called the

1. (A) Tegmen
2. (B) Testa
3. (C) Aleurone layer
4. (D) Pericarp

Q46. Important litter decomposers are

1. (A) Diatoms
2. (B) Red algae
3. (C) Sphagnum
4. (D) Deuteromycetes

Q47. Both autogamy and geitonogamy are prevented in

1. (A) Pea
2. (B) Castor
3. (C) Papaya
4. (D) Maize

Q48. Apical dominance is overcome by

1. (A) Zeatin
2. (B) Abscisic acid
3. (C) Ethylene
4. (D) IAA

Q49. A vascular bundle with a strip of cambium between xylem and phloem is called

1. (A) Closed
2. (B) Concentric
3. (C) Open
4. (D) Radial

Q50. The fruit of coconut is a

1. (A) Pome
2. (B) Berry
3. (C) Hesperidium
4. (D) Drupe

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Q51. Which cell of the pollen grain divides to form two male gametes?

1. (A) Tube nucleus
2. (B) Vegetative cell
3. (C) Generative cell
4. (D) Exine

Q52. The technique used to detect a DNA sequence in a clone is

1. (A) Autoradiography
2. (B) PCR
3. (C) Centrifugation
4. (D) Electrophoresis

Q53. The term 'molecular (chemical) scissors' refers to

1. (A) DNA polymerases
2. (B) Exonucleases only
3. (C) DNA ligases
4. (D) Restriction endonucleases

Q54. Species diversity, moving from high to low altitudes, generally

1. (A) Becomes zero
2. (B) Decreases
3. (C) Remains constant
4. (D) Increases

Q55. Lenticels can be observed on

1. (A) Flower petal
2. (B) Old woody stem
3. (C) Root hair
4. (D) Young leaf

Q56. Which pigment is primarily responsible for photosynthesis?

1. (A) Chlorophyll a
2. (B) Carotene
3. (C) Xanthophyll
4. (D) Anthocyanin

Q57. Root nodules of leguminous plants contain

1. (A) Rhizobium
2. (B) Nostoc
3. (C) Clostridium
4. (D) Azotobacter

Q58. The 'powerhouse' of the cell is the

1. (A) Golgi body
2. (B) Mitochondrion
3. (C) Lysosome
4. (D) Ribosome

Q59. Transpiration is loss of water as

1. (A) Vapour from aerial parts
2. (B) Dew
3. (C) Sap from stem
4. (D) Liquid from roots

Q60. Photosynthesis takes place in the

1. (A) Chloroplast
2. (B) Ribosome
3. (C) Mitochondria
4. (D) Nucleus

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Q61. Phosphorus shows an oxidation number of +3 ?
फॉस्फोरस +3 ऑक्सीकरण संख्या किसमें दर्शाता है ?

1. (A) metaphosphoric acid / मेटाफॉस्फोरिक अम्ल
2. (B) pyrophosphoric acid / पायरोफॉस्फोरिक अम्ल
3. (C) orthophosphoric acid / ऑर्थोफॉस्फोरिक अम्ल
4. (D) orthophosphorous acid / ऑर्थोफॉस्फोरस अम्ल

Q62. Preparation of initial extract typically implements _________.
प्रारंभिक निष्कर्ष (extract) तैयार करने में सामान्यतः किसका उपयोग होता है ?

1. (A) Non-polar solvents / अध्रुवीय विलायक
2. (B) Polar solvents / ध्रुवीय विलायक
3. (C) Mixture of polar and non-polar solvent / ध्रुवीय व अध्रुवीय विलायक का मिश्रण
4. (D) Supercritical fluids / अतिक्रांतिक तरल

Q63. Which of the following is not a polymorph of calcium carbonate ?
निम्नलिखित में कौन कैल्शियम कार्बोनेट का बहुरूप (polymorph) नहीं है ?

1. (A) Aragonite / अरागोनाइट
2. (B) Calcite / कैल्साइट
3. (C) Perovskite / पेरोव्स्काइट
4. (D) Vaterite / वैटेराइट

Q64. Zr and Hf have almost identical atomic radii because of ?
Zr और Hf के परमाणु त्रिज्या लगभग समान क्यों होते हैं ?

1. (A) Both belong to the same group / दोनों एक ही वर्ग के
2. (B) d-block contraction / d-ब्लॉक संकुचन
3. (C) Lanthanide contraction / लैंथेनाइड संकुचन
4. (D) Both are transition elements / दोनों संक्रमण तत्व

Q65. An organometallic complex that is used as an anticancer drug that targets DNA to inhibit cell growth is called ________.
वह कार्बधात्विक संकुल जो कैंसर-रोधी औषधि के रूप में DNA को लक्षित कर कोशिका वृद्धि रोकता है ?

1. (A) Salvarsan / साल्वार्सन
2. (B) Chloroquine / क्लोरोक्विन
3. (C) cis-Platin / सिस-प्लैटिन
4. (D) Ferroquine / फेरोक्विन

Q66. Which of the following is not a dicarboxylic acid ?
निम्नलिखित में कौन डाइकार्बोक्सिलिक अम्ल नहीं है ?

1. (A) Succinic acid / सक्सिनिक अम्ल
2. (B) Glutamic acid / ग्लूटामिक अम्ल
3. (C) Malonic acid / मैलोनिक अम्ल
4. (D) Butyric acid / ब्यूटिरिक अम्ल

Q67. Calcium carbide reacts with water to give

1. (A) Methane / मेथेन
2. (B) Carbine / कार्बीन
3. (C) Acetylene / एसीटिलीन
4. (D) Acetaldehyde / एसीटैल्डिहाइड

Q68. Potassium possesses body-centered cubic structure. The number of nearest neighboring atoms for each potassium atom in its crystal structure is hees ?
पोटैशियम की संरचना अंतःकेन्द्रित घनीय है। प्रत्येक K परमाणु के निकटतम पड़ोसी परमाणुओं की संख्या कितनी है ?

1. (A) twelve / बारह
2. (B) six / छह
3. (C) four / चार
4. (D) eight / आठ

Q69. Manganin is an alloy containing ?
मैंगनिन किसका मिश्रधातु है ?

1. (A) Cu, Mn, Ni / Cu, Mn, Ni
2. (B) Ni, Mn, Zn / Ni, Mn, Zn
3. (C) Zn, Cu, Mn / Zn, Cu, Mn
4. (D) Mn, CO, Fe / Mn, Co, Fe

Q70. 0.05 mg of gallic acid is dissolved in 250 mL of ethanol. The concentration is about

1. (A) 0.5 ppm / 0.5 ppm
2. (B) 0.05 ppm / 0.05 ppm
3. (C) 1 ppm / 1 ppm
4. (D) 0.2 ppm / 0.2 ppm

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Q71. Which is the weak electrolyte among the below ?
निम्नलिखित में दुर्बल विद्युत-अपघट्य कौन-सा है ?

1. (A) HF / HF
2. (B) HI / HI
3. (C) HCI / HCl
4. (D) HBr / HBr

Q72. Which of these is an ore of aluminium?

1. (A) Galena
2. (B) Bauxite
3. (C) Haematite
4. (D) Cinnabar

Q73. Galena is an ore of

1. (A) Mercury
2. (B) Copper
3. (C) Lead
4. (D) Zinc

Q74. The coordination number of the central atom in [Co(NH₃)₆]³⁺ is

1. (A) 8
2. (B) 4
3. (C) 3
4. (D) 6

Q75. Which gas is liberated when zinc reacts with dilute HCl?

1. (A) Hydrogen
2. (B) Nitrogen
3. (C) Oxygen
4. (D) Chlorine

Q76. Hard water contains salts of

1. (A) Iron and copper
2. (B) Sodium and potassium
3. (C) Aluminium
4. (D) Calcium and magnesium

Q77. The process of converting vegetable oil into vanaspati ghee is

1. (A) Oxidation
2. (B) Hydrolysis
3. (C) Hydrogenation
4. (D) Saponification

Q78. Saponification is the hydrolysis of fats with

1. (A) Enzymes only
2. (B) Acid
3. (C) Alkali (NaOH/KOH)
4. (D) Water only

Q79. Which polymer is used to make non-stick cookware coating?

1. (A) PVC
2. (B) Nylon-6,6
3. (C) Teflon
4. (D) Bakelite

Q80. Bakelite is a polymer of phenol and

1. (A) Ethylene
2. (B) Styrene
3. (C) Formaldehyde
4. (D) Urea

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Q81. The monomer of natural rubber is

1. (A) Isoprene
2. (B) Chloroprene
3. (C) Ethylene
4. (D) Styrene

Q82. Glucose is a

1. (A) Aldopentose
2. (B) Aldohexose
3. (C) Ketohexose
4. (D) Disaccharide

Q83. Which vitamin deficiency causes scurvy?

1. (A) Vitamin A
2. (B) Vitamin D
3. (C) Vitamin C
4. (D) Vitamin K

Q84. The ideal gas equation is

1. (A) P = nRT·V
2. (B) PV = RT/n
3. (C) PV = constant/T
4. (D) PV = nRT

Q85. Which law states that equal volumes of gases at the same T and P contain equal numbers of molecules?

1. (A) Charles's law
2. (B) Dalton's law
3. (C) Avogadro's law
4. (D) Boyle's law

Q86. Which circuit is used to store one bit of data ?
एक बिट डेटा संग्रहीत करने के लिए कौन-सा परिपथ प्रयोग होता है ?

1. (A) Vector / वेक्टर
2. (B) Flip Flop / फ्लिप फ्लॉप
3. (C) Encoder / एनकोडर
4. (D) Register / रजिस्टर

Q87. The computer system can store any kind of data in the form of 0's and 1's which is known as- ?
कंप्यूटर डेटा को 0 और 1 के रूप में संग्रहीत करता है, जिसे क्या कहते हैं ?

1. (A) Number system / संख्या प्रणाली
2. (B) Number unit / संख्या इकाई
3. (C) Text number system / टेक्स्ट संख्या प्रणाली
4. (D) Binary number / बाइनरी संख्या

Q88. Which of the following is the fastest type of memory ?
निम्नलिखित में सबसे तेज़ प्रकार की मेमोरी कौन-सी है ?

1. (A) Cache memory / कैश मेमोरी
2. (B) Secondary / द्वितीयक
3. (C) External memory / बाह्य मेमोरी
4. (D) Primary memory memory / प्राथमिक मेमोरी

Q89. Which type of printers uses light to produce the dots needed to form the characters to be printed on a page ?
कौन-सा प्रिंटर पृष्ठ पर अक्षर बनाने हेतु बिंदु उत्पन्न करने के लिए प्रकाश का उपयोग करता है ?

1. (A) Line / लाइन
2. (B) Dot Matrix Printers / डॉट मैट्रिक्स प्रिंटर
3. (C) Chain Printers / चेन प्रिंटर
4. (D) Laser / लेज़र

Q90. Linux is an popular webserver set of programs- LAMP where 'A' stands for _______.
Linux एक लोकप्रिय वेबसर्वर प्रोग्राम समूह LAMP है, जिसमें 'A' का अर्थ है ___ ?

1. (A) Android / Android
2. (B) Apple / Apple
3. (C) Adobe / Adobe
4. (D) Apache / Apache

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Q91. The 2's complement of the binary number (00000000) is 2 ?
बाइनरी संख्या (00000000) का 2's पूरक क्या है ?

1. (A) 00000000 / 00000000
2. (B) 01010101 / 01010101
3. (C) 11111111 / 11111111
4. (D) 10101010 / 10101010

Q92. The sum of binary numbers 11011 and 10111 is

1. (A) 110010 / 110010
2. (B) 010010 UP / 010010
3. (C) 10010 / 10010
4. (D) 11001 / 11001

Q93. Which device can be used to enter handwritten signatures?

1. (A) Mouse
2. (B) Plotter
3. (C) Graphics tablet
4. (D) Joystick

Q94. Which of the following is NOT a valid Binary number ?
निम्नलिखित में कौन-सी मान्य बाइनरी संख्या नहीं है ?

1. (A) 1010 / 1010
2. (B) 1002 / 1002
3. (C) 0000 / 0000
4. (D) 1111 / 1111

Q95. The output of a NOT gate for input 1 is

1. (A) Undefined
2. (B) Both
3. (C) 0
4. (D) 1

Q96. Find the average of 47, 37, 33, 43, 35, 33, 32, 44.

1. (A) 38
2. (B) 40
3. (C) 37
4. (D) 39

Q97. Find the area of a circle of radius 35 cm (take π = 22/7).

1. (A) 3885 cm²
2. (B) 3850 cm²
3. (C) 220 cm²
4. (D) 1925 cm²

Q98. The speed of a boat in still water is 15 km/h and the speed of the stream is 3 km/h. Find its downstream speed.

1. (A) 21 km/h
2. (B) 18 km/h
3. (C) 12 km/h
4. (D) 15 km/h

Q99. An article bought for ₹250 is sold at a profit of 10%. Find the selling price.

1. (A) 300
2. (B) 225
3. (C) 275
4. (D) 260

Q100. A 60 litre mixture contains milk and water in the ratio 3:1. How much water (in litres) is in it?

1. (A) 45 L
2. (B) 15 L
3. (C) 30 L
4. (D) 25 L

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