NEET UG

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Given below are two statements :Statement I : The cerebral hemispheres are connected by nerve tract known as corpus callosum.Statement II : The brain stem consists of the medulla oblongata, pons and cerebrum.In the light of the above statements, choo… Answer: 4. Statement I is correct but Statement II is incorrect. Statement I is correct. The corpus callosum is the nerve tract joining the... Neural control: neuron, nervous system, nerve impulse 1 answer
Match List I with List II :List I:A. Non-medicated IUDB. Copper releasing IUDC. Hormone releasing IUDD. ImplantsList II:I. Multiload 375II. ProgestogensIII. Lippes loopIV. LNG-20Choose the correct answer from the options given below : Answer: 1. A-III, B-I, C-IV, D-II Non-medicated IUD - Lippes loop (A-III). Copper releasing IUD - Multiload 375 (B-I). Hormone releasing IUD... Birth control, contraception and MTP 1 answer
Identify the correct option (A), (B), (C), (D) with respect to spermatogenesis.[Flow chart: GnRH -> LH -> (B) -> Androgens -> Formation of spermatids; GnRH -> (A) -> (C) -> Factors -> (D)] Answer: 2. FSH, Leydig cells, Sertoli cells, spermiogenesis. Key idea: in males, LH acts on Leydig cells to make androgens, and FSH acts on... Gametogenesis: spermatogenesis and oogenesis 1 answer
Match List I with List II :List I:A. Unicellular glandular epitheliumB. Compound epitheliumC. Multicellular glandular epitheliumD. Endocrine glandular epitheliumList II:I. Salivary glandsII. PancreasIII. Goblet cells of alimentary canalIV. Moist surf… Answer: 4. A-III, B-IV, C-I, D-II Unicellular glandular epithelium - goblet cells (A-III). Compound epithelium - moist surface of buccal cav... Animal tissues: epithelial, connective, muscular, neural 1 answer
Match List I with List II related to digestive system of cockroach.List I:A. The structures used for storing of food.B. Ring of 6-8 blind tubules at junction of foregut and midgut.C. Ring of 100-150 yellow coloured thin filaments at junction of midgu… Answer: 2. A-IV, B-II, C-III, D-I Crop stores food (A-IV). Gastric caeca: a ring of 6-8 blind tubules at the foregut-midgut junction (B-II).... Frog: morphology and anatomy 1 answer
Following are the stages of cell division :A. Gap 2 phaseB. CytokinesisC. Synthesis phaseD. KaryokinesisE. Gap 1 phaseChoose the correct sequence of stages from the options given below : Answer: 1. E-C-A-D-B Key idea: interphase comes first (G1, S, G2), then M phase (karyokinesis, then cytokinesis). G1 (E) → S (C) → G2 (A) →... Cell cycle, mitosis, meiosis 1 answer
Match List I with List II :List I (Sub Phases of Prophase I):A. DiakinesisB. PachyteneC. ZygoteneD. LeptoteneList II (Specific characters):I. Synaptonemal complex formationII. Completion of terminalisation of chiasmataIII. Chromosomes look like thin… Answer: 4. A-II, B-IV, C-I, D-III Key idea: order of prophase I: leptotene, zygotene, pachytene, diplotene, diakinesis. Diakinesis - termina... Cell cycle, mitosis, meiosis 1 answer
Match List I with List II :List I:A. AxonemeB. Cartwheel patternC. CristaD. SatelliteList II:I. CentrioleII. Cilia and flagellaIII. ChromosomeIV. MitochondriaChoose the correct answer from the options given below : Answer: 1. A-II, B-I, C-IV, D-III Axoneme - the 9+2 microtubule core of cilia and flagella (A-II). Cartwheel pattern - the 9 triplet arrange... Cytoskeleton, cilia, flagella, centrioles; nucleus 1 answer
Match List I with List II :List I:A. Down's syndromeB. α-ThalassemiaC. β-ThalassemiaD. Klinefelter's syndromeList II:I. 11^th chromosomeII. 'X' chromosomeIII. 21^st chromosomeIV. 16^th chromosomeChoose the correct answer from the options given below… Answer: 4. A-III, B-IV, C-I, D-II Down's syndrome - trisomy of chromosome 21 (A-III). α-Thalassemia - chromosome 16 (B-IV). β-Thalassemia -... Sex-linked inheritance, Mendelian and chromosomal disorders 1 answer
Which of the following are Autoimmune disorders?A. Myasthenia gravisB. Rheumatoid arthritisC. GoutD. Muscular dystrophyE. Systemic Lupus Erythematosus (SLE)Choose the most appropriate answer from the options given below : Answer: 3. A, B & E only Key idea: in an autoimmune disease the body attacks its own tissue. Myasthenia gravis, rheumatoid arthritis and SLE... Immunology basics and vaccines 1 answer
Match List I with List II :List I:A. Common coldB. HaemozoinC. Widal testD. AllergyList II:I. PlasmodiumII. TyphoidIII. RhinovirusesIV. Dust mitesChoose the correct answer from the options given below : Answer: 4. A-III, B-I, C-II, D-IV Common cold - rhinoviruses (A-III). Haemozoin - toxic pigment released from RBCs in malaria, Plasmodium (B... Pathogens and parasites causing human diseases 1 answer
Match List I with List II :List I:A. TyphoidB. LeishmaniasisC. RingwormD. FilariasisList II:I. FungusII. NematodeIII. ProtozoaIV. BacteriaChoose the correct answer from the options given below : Answer: 3. A-IV, B-III, C-I, D-II Typhoid - bacterium Salmonella typhi (A-IV). Leishmaniasis - protozoan Leishmania (B-III). Ringworm - fung... Pathogens and parasites causing human diseases 1 answer
Which of the following statements is incorrect? Answer: 4. Bio-reactors are used to produce small scale bacterial cultures. Bioreactors are large vessels (hundreds to thousands of litres)... Processes of recombinant DNA technology 1 answer
The "Ti plasmid" of Agrobacterium tumefaciens stands for Answer: 4. Tumor inducing plasmid The Ti plasmid of Agrobacterium tumefaciens is the tumour-inducing plasmid. Part of it (T-DNA) enters plan... Tools: restriction enzymes, vectors, host 1 answer
The following diagram showing restriction sites in E.coli cloning vector pBR322. Find the role of 'X' and 'Y' genes : Answer: 3. The gene 'X' is responsible for controlling the copy number of the linked DNA and 'Y' for protein involved in the replication of... Tools: restriction enzymes, vectors, host 1 answer
Match List I with List II :List I:A. PterophyllumB. MyxineC. PristisD. ExocoetusList II:I. Hag fishII. Saw fishIII. Angel fishIV. Flying fishChoose the correct answer from the options given below : Answer: 3. A-III, B-I, C-II, D-IV Pterophyllum - angel fish (A-III). Myxine - hag fish (B-I). Pristis - saw fish (C-II). Exocoetus - flying... Chordates up to classes 1 answer
Consider the following statements :A. Annelids are true coelomatesB. Poriferans are pseudocoelomatesC. Aschelminthes are acoelomatesD. Platyhelminthes are pseudocoelomatesChoose the correct answer from the options given below : Answer: 3. A only Key idea: coelom type of each phylum. A: Annelids are true coelomates (metameric segmentation) - correct. B: Poriferans ar... Non-chordates up to phyla 1 answer
Which one of the following factors will not affect the Hardy-Weinberg equilibrium? Answer: 1. Constant gene pool Key idea: Hardy-Weinberg equilibrium means allele frequencies stay constant from generation to generation. Fac... Gene flow, genetic drift, Hardy-Weinberg principle 1 answer
Given below are some stages of human evolution. Arrange them in correct sequence. (Past to Recent)A. Homo habilisB. Homo sapiensC. Homo neanderthalensisD. Homo erectusChoose the correct sequence of human evolution from the options given below : Answer: 1. A-D-C-B Key idea: order of appearance of the genus Homo. Homo habilis (about 2 mya) → Homo erectus (about 1.5 mya) → Homo neander... Human evolution 1 answer
Match List I with List II :List I:A. Expiratory capacityB. Functional residual capacityC. Vital capacityD. Inspiratory capacityList II:I. Expiratory reserve volume + Tidal volume + Inspiratory reserve volumeII. Tidal volume + Expiratory reserve volum… Answer: 2. A-II, B-IV, C-I, D-III Key idea: capacities are sums of volumes. Expiratory capacity = TV + ERV (A-II). Functional residual capac... Breathing and respiration: mechanism, exchange and transport of gases, volumes, disorders 1 answer
Which of the following factors are favourable for the formation of oxyhaemoglobin in alveoli? Answer: 3. High pO₂ and Lesser H^+ concentration Key idea: oxygen binding is favoured in the alveoli. Alveoli have high pO₂, low pCO₂, lower... Breathing and respiration: mechanism, exchange and transport of gases, volumes, disorders 1 answer
Which of the following is not a steroid hormone? Answer: 1. Glucagon Key idea: steroid hormones are made from cholesterol. Cortisol, testosterone and progesterone are steroids. Glucagon, fr... Endocrine glands and hormones, mechanism of action 1 answer
Given below are two statements :Statement I : In the nephron, the descending limb of loop of Henle is impermeable to water and permeable to electrolytes.Statement II : The proximal convoluted tubule is lined by simple columnar brush border epithelium… Answer: 3. Both Statement I and Statement II are false Statement I is false. The descending limb of Henle's loop is permeable to water and a... Excretion: modes, nephron, urine formation, osmoregulation 1 answer
Match List I with List II :List I:A. PonsB. HypothalamusC. MedullaD. CerebellumList II:I. Provides additional space for Neurons, regulates posture and balance.II. Controls respiration and gastric secretions.III. Connects different regions of the brai… Answer: 3. A-III, B-IV, C-II, D-I Pons - fibre tracts that connect different regions of the brain (A-III). Hypothalamus - contains neurosecr... Neural control: neuron, nervous system, nerve impulse 1 answer

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