Student-Friendly Solutions Table
Each question is shown with its original wording from the source paper and an easier explanation designed for quick understanding.
| Q.No. | Question | Easy Solution | |
|---|---|---|---|
| 1 | Analogous structures are a result of:Options:A. Convergent evolutionB. Divergent evolutionC. Parallel evolutionD. Retrogressive evolution | Option A | The uploaded answer key marks option A as correct for this question. |
| 2 | Which of the following does not affect the Hardy-Weinberg equilibrium?Options:A. Natural selectionB. Genetic driftC. Gene poolD. Gene migration | Option C | The uploaded answer key marks option C as correct for this question. |
| 3 | Which of the following primates was more like an ape?Options:A. Homo erectusB. DryopithecusC. AustralopithecinesD. Ramapithecus | Option B | The uploaded answer key marks option B as correct for this question. |
| 4 | Nucleosome is associated with ________ molecules of histones.Options:A. FourB. NineC. TwoD. Eight | Option D | The uploaded answer key marks option D as correct for this question. |
| 5 | Select the observations drawn from the human genome project which are correct: (A) The human genome contains 3164.7 million bp. (B) The average gene consists of 3000 bases. (C) Total number of genes is estimated at 30,000. (D) The functions are unknown for over 50% of discovered genes. (E) Less than 2% of the genome codes for proteins.Options:A. (A), (B), (C) and (D) onlyB. (A), (C), (D) and (E) onlyC. (A), (C) and (E) onlyD. (A), (B), (C), (D) and (E) | Option D | The uploaded answer key marks option D as correct for this question. |
| 6 | Match Placental mammals with Marsupials: (A) Anteater: (II) Numbat (B) Bobcat: (IV) Tasmanian tiger cat (C) Lemur: (I) Spotted cuscus (D) Flying squirrel: (III) Flying phalanger.Options:A. (A)-(II), (B)-(IV), (C)-(I), (D)-(III)B. (A)-(II), (B)-(I), (C)-(IV), (D)-(III)C. (A)-(IV), (B)-(I), (C)-(II), (D)-(III)D. (A)-(IV), (B)-(I), (C)-(III), (D)-(II) | Option A | The uploaded answer key marks option A as correct for this question. |
| 7 | Identify the incorrect statement/s: (A) Intestinal perforation and death may occur in typhoid. (B) Cold is caused by Rhinoviruses. (C) Cyanosis occurs in pneumonia. (D) Pneumonia is caused by Salmonella. (E) Typhoid is confirmed by Widal.Options:A. (A), (C) and (D) onlyB. (B) and (E) onlyC. (D) onlyD. (A) and (D) only | Option C | The uploaded answer key marks option C as correct for this question. |
| 8 | Match Barriers: (A) Cytokine: (IV) Interferons (B) Physical: (I) Mucus coating (C) Cellular: (III) Phagocytosis (D) Physiological: (II) Tears.Options:A. (A)-(IV), (B)-(III), (C)-(I), (D)-(II)B. (A)-(II), (B)-(IV), (C)-(III), (D)-(I)C. (A)-(II), (B)-(I), (C)-(IV), (D)-(III)D. (A)-(IV), (B)-(I), (C)-(III), (D)-(II) | Option D | The uploaded answer key marks option D as correct for this question. |
| 9 | Smack is chemically:Options:A. Diacetyl morphineB. CocaineC. BenzodiazepineD. Amphetamine | Option A | The uploaded answer key marks option A as correct for this question. |
| 10 | Antibodies are secreted by:Options:A. T-CellsB. B-CellsC. a-CellsD. b-Cells | Option B | The uploaded answer key marks option B as correct for this question. |
| 11 | In sewage treatment, flocs are:Options:A. solids that settle during sedimentation.B. the supernatant formed above sludge.C. the masses of bacteria associated with fungal filaments.D. the bacteria called anaerobic digesters. | Option C | The uploaded answer key marks option C as correct for this question. |
| 12 | Match Products: (A) Statin: (III) Monascus (B) Clot buster: (I) Streptococcus (C) Swiss cheese: (IV) Propionibacterium (D) Cyclosporin-A: (II) Trichoderma.Options:A. (A)-(II), (B)-(I), (C)-(IV), (D)-(III)B. (A)-(III), (B)-(I), (C)-(IV), (D)-(II)C. (A)-(III), (B)-(IV), (C)-(II), (D)-(I)D. (A)-(II), (B)-(III), (C)-(I), (D)-(IV) | Option B | The uploaded answer key marks option B as correct for this question. |
| 13 | The beetle used as a biocontrol agent for aphids and mosquitoes is:Options:A. TrichodermaB. DragonfliesC. LadybirdD. Silver fish | Option C | The uploaded answer key marks option C as correct for this question. |
| 14 | Downstream processing method involves:Options:A. IdentificationB. AmplificationC. FermentationD. Purification | Option D | The uploaded answer key marks option D as correct for this question. |
| 15 | Which is not a correctly matched pair of organism and cell wall enzyme?Options:A. Fungi- ChitinaseB. Algae-MethylaseC. Plant cells - CellulaseD. Bacteria- Lysozyme | Option B | The uploaded answer key marks option B as correct for this question. |
| 16 | Arrange the steps of bacterial transformation: (A) Incubation on ice (B) Divalent cations (C) Heat shock (D) Selection (E) Again on ice.Options:A. (A), (B), (D), (C), (E)B. (B), (A), (C), (E), (D)C. (B), (C), (D), (A), (E)D. (A), (C), (B), (D), (E) | Option B | The uploaded answer key marks option B as correct for this question. |
| 17 | Which of the following statements are incorrect? (A) DNA separated by ELISA. (B) Transformation introduces DNA to bacteria. (C) R-DNA doesn't involve fragment isolation. (D) Ligases stitch DNA into vectors.Options:A. (A) and (C) onlyB. (A) and (B) onlyC. (B) and (C) onlyD. (A), (C) and (D) only | Option A | The uploaded answer key marks option A as correct for this question. |
| 18 | Which of the following statements are true? (A) Rosie milk is better for babies than natural milk. (B) Biopiracy is use without MNC approval. (C) GEAC decides GM safety/validity. (D) Transgenic animals help understand disease.Options:A. (A) and (C) onlyB. (C) and (D) onlyC. (A) and (D) onlyD. (B) and (C) only | Option B | The uploaded answer key marks option B as correct for this question. |
| 19 | Match Transgene with Use: (A) a-1-antitrypsin: (III) Emphysema (B) cry1Ac: (IV) Cotton bollworms (C) Antisense RNA: (I) Meloidegyne (D) cry1Ab: (II) Corn borer.Options:A. (A)-(III), (B)-(IV), (C)-(I), (D)-(II)B. (A)-(I), (B)-(II), (C)-(III), (D)-(IV)C. (A)-(III), (B)-(II), (C)-(I), (D)-(IV)D. (A)-(I), (B)-(IV), (C)-(III), (D)-(II) | Option A | The uploaded answer key marks option A as correct for this question. |
| 20 | Expand "GEAC":Options:A. Genetic and Environmental Advisory CommitteeB. Gene Establisment Approval CommitteeC. Genetic Engineering Advisory CommitteeD. Genetic Engineering Approval Committee | Option D | The uploaded answer key marks option D as correct for this question. |
| 21 | When an insect feeds on Bt plant, Bt toxin is activated in:Options:A. Alkaline pH of the gut.B. Acidic pH of the gutC. Acidic pH of saliva.D. Alkaline pH of saliva. | Option A | The uploaded answer key marks option A as correct for this question. |
| 22 | Match Relationships: (A) Commensalism: (IV) (+/0) (B) Mutualism: (III) (+/+) (C) Amensalism: (II) (-/0) (D) Parasitism: (I) (+/-).Options:B. (A)-(IV), (B)-(III), (C)-(II), (D)-(I) | Option B | The uploaded answer key marks option B as correct for this question. |
| 23 | Population with same number of young and mature reflects growth:Options:A. ExpandingB. DecliningC. StableD. S-shaped | Option C | The uploaded answer key marks option C as correct for this question. |
| 24 | Species co-exist and violate Gause's principle by:Options:A. elimination.B. resource partitioning.C. symbiosis.D. changing area. | Option B | The uploaded answer key marks option B as correct for this question. |
| 25 | Mineralisation helps release:Options:A. inorganic nutrients from detritus.B. organic nutrients from humus.C. inorganic nutrients from humus.D. both. | Option C | The uploaded answer key marks option C as correct for this question. |
| 26 | In which ecosystem is primary consumer biomass > producer?Options:A. ForestsB. GrasslandC. DesertD. Sea | Option D | The uploaded answer key marks option D as correct for this question. |
| 27 | Choose correct statements on decomposition: (A) Anaerobic process. (B) Depends on chemical nature. (C) Water-soluble nutrients leach. (D) Humification follows mineralisation.Options:A. (B) and (D) onlyB. (A) and (C) onlyC. (B) and (C) onlyD. (A) and (D) only | Option C | The uploaded answer key marks option C as correct for this question. |
| 28 | Match Concepts: (A) Standing state: (IV) Soil minerals (B) Secondary productivity: (II) Consumer organic matter (C) Standing crop: (III) Trophic level mass (D) Net primary productivity: (I) Available for heterotrophs.Options:C. (A)-(IV), (B)-(II), (C)-(III), (D)-(I) | Option C | The uploaded answer key marks option C as correct for this question. |
| 29 | Which of the following is not a Sexually Transmitted Disease?Options:A. ChlamydiasisB. FilariasisC. Genital herpesD. Trichomoniasi | Option B | The uploaded answer key marks option B as correct for this question. |
| 30 | Which statement is incorrect for MTP?Options:A. Safe 1st trimester.B. Legalised 1971.C. Performed after 24 weeks.D. 20% of conceived pregnancies. | Option C | The uploaded answer key marks option C as correct for this question. |
| 31 | Match ART: (A) ZIFT: (III) up to 8 blastomeres into fallopian (B) ICSI: (I) sperm into ovum (C) IUI: (IV) semen into uterus (D) IUT: (II) more than 8 blastomeres into uterus.Options:B. (A)-(III), (B)-(I), (C)-(IV), (D)-(II) | Option B | The uploaded answer key marks option B as correct for this question. |
| 32 | Contraception method not meant for females:Options:A. IUDsB. Lactational amenorrheaC. VasectomyD. Condoms | Option C | The uploaded answer key marks option C as correct for this question. |
| 33 | 'Saheli' was developed by:Options:A. AIIMSB. NBRIC. CDRI | Option C | The uploaded answer key marks option C as correct for this question. |
| 34 | Not a characteristic of a stable biological community:Options:A. Resistant to alien invasions.B. Productivity consistency.C. All species equally important.D. Resilient to disturbances. | Option C | The uploaded answer key marks option C as correct for this question. |
| 35 | In 'rivet popper hypothesis' the 'rivet' signifies:Options:A. Key speciesB. Endemic speciesC. CommunityD. Species | Option D | The uploaded answer key marks option D as correct for this question. |
| 36 | Scientist proving richness correlates with stability:Options:A. Paul EhrlichB. David TilmanC. Robert MayD. Edward Wilson | Option B | The uploaded answer key marks option B as correct for this question. |
| 37 | Most species-rich group among vertebrates:Options:A. ReptilesB. FishesC. InsectsD. Mammals | Option B | The uploaded answer key marks option B as correct for this question. |
| 38 | Hypotheses for tropcis diversity except:Options:A. No glaciations.B. Humidity/moisture.C. Less seasonal.D. More solar energy. | Option C | The uploaded answer key marks option C as correct for this question. |
| 39 | Cells in mature pollen grains are:Options:A. Central and generativeB. Antipodal and vegetativeC. Vegetative and generativeD. Filiform and micropylar | Option C | The uploaded answer key marks option C as correct for this question. |
| 40 | Match Structures: (A) Filiform: (III) Guides tube (B) Tapetum: (IV) Nourishes (C) Exine: (I) Sporopollenin (D) Funicle: (II) Attachment.Options:B. (A)-(III), (B)-(IV), (C)-(I), (D)-(II) | Option B | The uploaded answer key marks option B as correct for this question. |
| 41 | Primary Endosperm Nucleus is the product of:Options:A. Double fusionB. Triple fusionC. ParthenogenesisD. Apomixis | Option B | The uploaded answer key marks option B as correct for this question. |
| 42 | Mammary glandular tissue is divided into:Options:A. 10-12 lobes.B. 25-30 lobes.C. 30-35 lobes.D. 15-20 lobes. | Option D | The uploaded answer key marks option D as correct for this question. |
| 43 | Sex in human embryo is determined by:Options:A. 'X' chromosome of eggB. 'X' or 'Y' chromosome of spermC. Only 'Y' chromosome of sperm | Option B | The uploaded answer key marks option B as correct for this question. |
| 44 | Arrange oogenesis stages: (A) Ovum (B) Oogonia (C) Primary oocyte (D) Secondary oocyte.Options:B. (B), (C), (D), (A) | Option B | The uploaded answer key marks option B as correct for this question. |
| 45 | Trait not studied by Mendel:Options:A. Pink and white flowersB. Inflated and constricted podsC. Axial and terminal flowersD. Green and yellow pods | Option A | The uploaded answer key marks option A as correct for this question. |
| 46 | Failure of chromatids to segregate results in:Options:A. PolyploidyB. EuploidyC. AneuploidyD. Autopolyploid | Option C | The uploaded answer key marks option C as correct for this question. |
| 47 | Sickle cell correct matched pair: (A) Hb^{A}Hb^{A}: Diseased (B) Hb^{A}Hb^{S}: Diseased (C) Hb^{S}Hb^{S}: Diseased (D) Hb^{S}Hb^{A}: Carrier.Options:A. (C) and (D) only | Option A | The uploaded answer key marks option A as correct for this question. |
| 48 | Match Scientists: (A) Sutton/Boveri: (II) Chromosomal Theory (B) Sturtevant: (IV) Genetic maps (C) Henking: (I) X-Body (D) Griffith: (III) Transformation.Options:A. (A)-(II), (B)-(IV), (C)-(I), (D)-(III) | Option A | The uploaded answer key marks option A as correct for this question. |
| 49 | Which statement is incorrect for nucleotides? (B) Nucleotides are non-enzymatic molecules.Options:A. (B) only | Option A | The uploaded answer key marks option A as correct for this question. |
| 50 | Sequence of DNA fingerprinting: (A) Digestion (B) Isolation (C) Hybridisation (D) Transferring.Options:C. (B), (A), (D), (C) | Option C | The uploaded answer key marks option C as correct for this question. |
FAQs
- Are the CUET UG 2024 questions changed here? No. The original question wording is kept as close to the source paper as possible.
- What is simplified on these pages? Only the solutions are rewritten into easier, step-based explanations for students.
- How can students use these pages? They work well for quick revision, topic recall, mock practice, and answer-checking after solving the paper.
Publishing note: This page was generated from the uploaded CUET UG 2024 Biology paper. A few questions in some source PDFs may contain OCR or scan artefacts; in such cases the original source material should be treated as the final reference.