NEET Practice Questions May ’17
1. All monerans
(a) contain either DNA or RNA
(b) demonstrate a long circular strand of DNA not found enclosed in a nuclear membrane
(c) are photosynthetic bacteria
(d) all of these
2. Proteolytic enzymes do not corrode the lining of alimentary canal as
(a) they are secreted in an inactive form
(b) lining layer of alimentary canal does not contain protein
(c) the enzymes are not capable of digesting fat
(d) none of the above.
3. Blood group is due to
(a) specific antigen on the surface of WBC
(b) specific antibodies on the surface of RBC
(c) specific antigen on the surface of RBC
(d) type of haemoglobin present in blood
4. Match the following hormonal disorders with associated glands and select the correct option from the codes given below.
5. All enzymes of TCA cycle are located in the mitochondrial matrix except one which is located in inner mitochondrial membranes in eukaryotes and in cytosol in prokaryotes. This enzyme is
(a) isocitrate dehydrogenase
(b) ketoglutarate dehydrogenase
(c) succinate dehydrogenase
(d) lactate dehydrogenase.
6. Protein which plays a significant role in ageing is
(a) elastin (b) collagen
(c) actin (d) myosin
7. Given figure demonstrates osmosis by egg membrane osmoscope. After few days, which of the following would occur?
8. Which of the following is an incorrect match?
(a) Bowman’s capsule – Glomerular filtration
(b) DCT – Absorption of glucose
(c) Henle’s loop – Concentration of urine
(d) PCT – Absorption of Na* and K+ ions
9. Which of the following is unique to mitosis and not a part of meiosis?
(a) Homologous chromosomes behave independently.
(b) Chromatids are separated during anaphase.
(c) Homologous chromosomes pair and form bivalents.
(d) Homologous chromosomes crossover.
10. Which of the following larvae is found in hemichordates and marks their affinity with echinoderms?
(a) Tornaria (b) Dipleurula
(c) Bipinnaria (d) Trochophore
11. Which one of the following is correct pairing of a body part and the kind of muscle tissue that moves it?
(a) Biceps of upper arm – Smooth muscles
(b) Abdominal wall – Smooth muscles only
(c) Iris – Involuntary smooth muscle
(d) Heart wall – Involuntary unstriated muscle
12. Identify P, Q and R in the graph shown below and select the correct option.
13. Read the following statements and select the incorrect one.
(a) Semen is preserved for artificial insemination by heating.
(b) Mating of animals within the same breed, but having no common ancestors on either side of their pedigree upto 4-6 generations is called as out-crossing.
(c) Example of interspecific hybridization is mule.
(d) Hinny is a hybrid between the female ass and stallion.
14. The third stage of parturition is called “after-birth”. In this stage
(a) excessive bleeding occurs
(b) foetus is born and cervix and vagina contract to normal condition
(c) foetus is born and contraction of uterine wall prevents excessive bleeding
(d) foetus is born and the placenta is expelled out.
15. A man and a woman, who do not show any apparent signs of a certain inherited disease, have seven children (2 daughters and 5 sons). Three of the sons suffer from the given disease but none of the daughters affected. Which of the following mode of inheritance do you suggest for this disease?
(a) Sex-linked dominant (b) Sex-linked recessive (c) Sex-limited recessive (d) Autosomal dominant
17. Given pie-diagram represents the relative contribution of various greenhouse gases to total global warming. Identify the gases P, Q, R andS.
19. Match Column -1 with Column – II and select the correct option from the codes given below.
20. Read the given statements and select the correct option. Statement 1: Peroxisomes are involved in photorespiration in plant cells and help in the lipid metabolism in animal cells.
Statement: 2 Peroxisomes are the cells’ garbage disposal system.
(a) Both statements 1 and 2 are correct and statement 2 is the correct explanation of statement 1.
(b) Both statements 1 and 2 are correct but statement 2 is not the correct explanation of statement 1.
(c) Statement 1 is correct and statement 2 is incorrect.
(d) Both statements 1 and 2 are incorrect.
21. The quiescent centre in root meristem serves as a
(a) site for storage of food which is utilized during maturation
(b) reservoir of growth hormones
(c) reserve for replenishment of damaged cells of the meristem
(d) region for absorption of water.
22. Which of the following sets includes bacterial diseases only?
(a) Cholera, typhoid, mumps
(b) Tetanus, tuberculosis, measles
(c) Malaria, mumps, poliomyelitis
(d) Diphtheria, leprosy, plague
23. Which one of the following is a matching pair of a body feature and the animal possessing it?
26. If the number of chromosomes in male gametes of Pinus is 12, the number of chromosomes in its endosperm cells will be
(a) 36 (b) 24
(c) 12 (d) 6
27. In Krebs’ cycle GTP is formed in
(a) substrate level phosphorylation
(b) oxidative phosphorylation
(c) non-cyclic photophosphorylation
(d) cyclic photophosphorylation.
28. Which of the following organisms is used in the production of beverages?
(a) Penicillium notatum
(b) Saccharomyces cerevisiae
(c) Aspergillus niger
(d) Clostridium butylicum
29. Given below are the figures of blood vessels. Identify them and select the correct option.
30. The richest sources of vitamin B,2 are
(a) goat’s liver and clams
(b) chocolate and green gram
(c) rice and hen’s egg
(d) carrot and chicken’s breast
31. Which is necessary for muscle contraction?
(a) K* (b) Na*
(c) Ca2+ (d) Cu2+
32. A long day plant flowers only if exposed to a light period
(a) more than its critical day length
(b) less than its critical day length
(c) equal to its critical day length
(d) slightly less than or equal to its critical day length
33. Community is
(a) a group of interdependent and interacting population of same species
(b) a group of interdependent and interacting population of same species in a specific area
(c) a group of interdependent and interacting population of different species in a specific area
(d) none of these
34. Read the given statements and identify the plant hormones X, Y andZ.
(i) Hormone Y induces flowering in mango and also promotes rapid internode/petiole elongation in deep water rice plants and hence helping leaves or upper part of shoot to remain above water.
(ii) Hormone X promotes root growth and root hair formation.
(iii) Hormone Z inhibits the seed germination, increases the tolerance of plant to various stresses, play important role in seed development, maturation and dormancy.
(a) Y – ABA, X – Auxin, Z – GA
(b) Z-GA,X-Auxin, Y-C2H4
(c) Y-Auxin, X-C2H4,Z-GA
(d) Y – C2H4, X – C2H4, Z – ABA
35. Read the given statements and select the correct option. Statement 1: The tumour inducing plasmid (77plasmid) acts as a cloning vector in recombinant DNA technology.
Statement 2 : The Ti plasmid which is used in the mechanisms of delivering genes to a cell remains pathogenic.
Both statements 1 and 2 are correct and statement 2 is the correct explanation of statement 1.
Both statements 1 and 2 are correct but statement 2 is not the correct explanation of statement 1.
Statement 1 is correct and statement 2 is incorrect
Both statements one and two are correct
36. Study the age pyramids given below and select the correct statements regarding these.
(a) A is a triangle shaped age pyramid, where pre- reproductive stage is very large as compared to the reproductive and post reproductive stages of the population. This type of age structure indicates that the population would increase rapidly.
(b) B is an inverted bell shaped age pyramid, where number of pre-reproductive and reproductive individuals is almost equal. This type of age structure indicates that the population is stable.
(c) C is an Urn shaped age pyramid, where more number of older people are present. This type of age structure indicates that the population is declining.
(d) All of these
37. Formation of non-functional methaemoglobin causes blue- baby syndrome. This is due to
(a) excess of arsenic concentration in drinking water
(b) excess of nitrates in drinking water
(c) deficiency of iron in food
(d) increased methane content in the atmosphere
38. The given figure shows the structure of a neuron. Select the option that correctly identifies the parts labelled A toE.
39. Haplontic life cycle generally occurs in
(a) most algae (b) bryophytes
(c) pteridophytes (d) gymnosperms
40. Diabetes insipidus occurs due to hyposecretion of
(a) thymosine (b) oxytocin
(c) insulin (d) vasopressin.
41. Ovulation is brought about by the a surge in the level of
(a) luteinizing hormone (LH)
(c) follicle stimulating hormone (FSH)
(d) luteotropic hormone (LTH).
42. Which of the following causes plague?
(a) Yersinia pestis (b) Trichinella spiralis
(c) Leishmania donovani
(d) Salmonella typhimurium
43. The flower shown in the following diagram is
44. Refer the given figures and select the correct option
(a) C and D reproduce by budding that includes nuclear division only.
(b) All of these show asexual mode of reproduction.
(c) B represents multiple fission in an alga.
(d) A shows spore formation in a moneran.
45. Organ of Corti helps in
(a) maintaining equilibrium
(c) formation of wax (d) all of these
46. Identify parts 1-4 in the figure and 2 select the correct option.
(a) 1-cerebrum, 2-cerebellum, 3-gyrus, 4-medulla
(b) 1-cerebrum, 2-cerebellum,3-medulla, 4-gyrus
(c) 1-cerebellum, 2-cerebrum,3-pons,4-medulla
(d) 1 -pons, 2-cerebrum, 3-medulla, 4-cerebellum
48. More than two alternate forms of a gene present on the same locus are called (i) They are produced due to repeated (ii) of the same gene but in different directions. Their well known example is (iii).
Which of the following correctly fills the gaps in the above statement?
49. The geological time period known as ‘golden age of reptiles’ is
(a) Mesozoic era (b) Paleozoic era
(c) Coenozoicera (d) Precambrian era.
50. Which of the following is necessary to start clotting of blood?
(b) Thromboplastin and Ca++
(d) Fibrinogen and prothrombin
51. Refer the diagram showing the circulatory system of cockroach and select the correct option.
(a) B is anterior aorta
(b) A is Anterior aorta
(c) C shows alary muscles
(d) None of these
52. Identify the correct sequence of taxonomical categories.
(a) Genus -»Order Species -»Kingdom
(b) Species -»Genus -»Order -»Phylum
(c) Species -> Order Genus -»Phylum
(d) Genus -> Species -»Kingdom -> Phylum
53. Match the phylum with its member organism and select the correct option from the codes given below.
55. Which among the following is sexually transmitted disease?
(a) Chloera (b) Syphilis
(c) Typhoid (d) None of these
56. Which of the following is true about enterogastrone?
(a) It is secreted by gastrin cells, in the pyloric region of stomach.
(b) It inhibits gastric secretion and motility.
(c) It releases bicarbonates in pancreatic juice
(d) All of the above
57. What is tidal volume in respiration?
(a) Volume of air remaining in the lungs even after a forced expiration.
(b) The maximum volume of air a person can breathe in after a forced inspiration.
(c) Air volume that does not reach the respiratory surface.
(d) Volume of air inspired or expired during a normal breathing.
58. Match the excretory organ with animal in which it is found.
59. The given diagram shows pituitary gland and hypothalamus. What does part X secrete?
(a) Growth hormone, prolactin, thyroid stimulating hormone and gonadotropins.
(b) Melanocyte stimulating hormone.
(c) Oxytocin and vasopressin.
(d) None of these
60. Which of the following statements is not true about muscle contraction?
(a) The smallest unit of muscle contraction is a sarcomere.
(b) Sodium is an essential element for contraction of muscles.
(c) During muscle contraction, chemical energy is changed into mechanical energy.
(d) The actin filaments meet in the centre of the sarcomere.