MEE-2016 SET-A Explanations By Pankaj Mishra

1

1. A cell nucleus contains [A] DNA [B] Protein [C] RNA [D] All of the above Explanation: The granular material within the nucleus is chromatin. It contains DNA associated with histone proteins. The nucleolus is the region within the nucleus where the RNA components of ribosomes are synthesized. 2. Which of the following reactions occurs in the stroma of the chloroplast in plant cells [A] Calvin cycle [B] Kreb’s cycle [C] Fermentation [D] Decarboxylation Explanation: Light reaction occurs in Grana(Thylakoid) where as dark reaction (Calvin cycle) occurs in Stroma of the chloroplasts. 3. Which of the following is typically not found in normal somatic cells of a human male? [A] The entire genetic information possessed by the original zygote [B] An inactivated X chromosome [C] Forty-four autosomes [D] A diploid nucleus Explanation: An inactivated X chromosome is found only in females. As females have XX, one of the X is non functional and is called Barr Body(Inactivated X Chromosome). 4. Which of the following statements about fungi is not true? [A] They are all eukaryotic [B] They all have rigid cell walls [C] Most are filamentous [D] Some are photosynthetic

MEE-2016 SET-A Explanations By Pankaj Mishra

2

Explanation: The fungi are a distinct kingdom of organisms, lacking chlorophyll, no fungi have chlorophyll or carry out photosynthesis. They are heterotrophs. 5. The cytoskeleton includes all of the following, except [A] microtubules [B] intermediate filaments [C] myosin filaments [D] actin filaments Explanation: The Cytoskeleton consist of thin filaments(Actin Filaments), Intermediate filaments, and the thickest microtubules. 6. Which of the following organs or tissues is most dependent upon a constant blood supply of glucose? [A] Liver [B] Brain [C] Adipose tissue [D] Skeletal muscle Explanation: Nutrition for the brain is glucose. Neurons synthesize ATP almost exclusively from glucose via reactions that use oxygen. When activity of neurons and neuroglia increases in a region of the brain, blood flow to that area also increases. In an adult, the brain represents only 2% of total body weight, but consumes about 20% of the oxygen and glucose used even at rest. 7. Which of the following is not a constituent of saliva? [A] Salivary amylase [B] Mucus [C] Lysozyme [D] Pepsin Explanation: Pepsin is absent in saliva, it is a protein hydrolyzing enzyme found in gastric juices.

MEE-2016 SET-A Explanations By Pankaj Mishra

3

8. The sex chromosomes of females and males are respectively [A] XX and YY [B] YY and XX [C] XY and XX [D] XX and XY Explanation: In XX-XY sex determination cells of females have two X chromosomes (XX) and the cells of males have a single X chromosome and a smaller sex chromosome called the Y chromosome (XY). 9. Prokaryotic cell possesses [A] nuclear membrane [B] ribosome [C] mitochondria [D] Golgi bodies Explanation: Prokaryotic cell have only ribosomes as non membrane bound organelle that are found . 10. Who among the following was/were awarded the Nobel Prize for the discovery of double-helical structure of DNA ? [A] J. D. Watson [B] F. H. C. Crick [C] Both [A] and [B] [D] Watson and Hook Explanation: Watson and Crick provided a three-dimensional model of the structure of DNA. 11. During photosynthesis, the light energy is converted into [A] mechanical energy [B] chemical energy [C] electrical energy [D] All of the above Explanation: During photosynthesis light energy(Sunlight) is utilized to synthesize organic molecules(Chemical Energy).

MEE-2016 SET-A Explanations By Pankaj Mishra

4

12 Blood clot is due to [A] hormonal action [B] enzymatic action [C] Both [A] and [B] [D] None of the above Explanation: Although bleeding is controlled by both hormonal and enzymatic reactions, blood clot is brought about by cascade enzymatic reaction. 13. Conversion of glucose into glycogen in liver is called [A] glycogenolysis [B] glycogenesis [C] glycolysis [D] gluconeogenesis Explanation: glycogenolysis(Glycogen breakdown in liver), glycogenesis(Conversion of glucose into glycogen in liver ), glycolysis(stages of cellular respiration), gluconeogenesis (the conversion of a non-carbohydrate into glucose in the liver), 14. Vitamin D is also called as [A] ascorbic acid [B] calciferol [C] retinol [D] folic acid Explanation: Vitamin D is also called calciferol. 15. Which one of the following transfers electrons during synthesis of ATP in cellular respiration? [A] NADP [B) FAD [C] NAD [D] All of the above Explanation: NAD and FAD transfers electrons in catabolic reaction to form ATP, whereas NADP transfers electrons during anabolic

MEE-2016 SET-A Explanations By Pankaj Mishra

5

reactions(Photosynthesis) to form ATP. 16 Which one of the following is different in different animals ? [A] Fat [B] Carbohydrate [C] Vitamin [D] Protein Explanation: Proteins undergo huge structural arrangements in the form of primary, secondary, tertiary and quaternary structures, thereby representing huge forms and structural variation. 17. Which one of the following bases of RNA replaces thymine [T] of DNA? [A] Adenine [B] Guanine [C] Cytosine [D] Uracil Explanation: In RNA, Thymine is replaced by Uracil. 18. Mendel's dihybrid ratio is [A] 3:1 [B] 9:3:3:1 [C] 1:1:1 [D] 1:1:1:1 Explanation: Mendel’s dihybrid ratio is 9:3:3:1 19. Reticulate venation is a characteristic feature of [A] monocots [B] dicots [C] Both [A] and [B] [D] None of the above Explanation: Reticulate venation is characteristics to dicots. 20. Which chromosome is the largest in human cell? [A] Chromosome 1

MEE-2016 SET-A Explanations By Pankaj Mishra

6

[B] Chromosome 22 [C] Chromosome X [D] Chromosome Y Explanation: Chromosome are arranged and numbered according to a convention. The basis for the arrangement is size of a chromosome, position of the centromere, and the chromosome specific banding pattern. 21. The pitcher in the pitcher plant is a modified [A] leaf [B] flower [C] stem [D] fruit Explanation: The leaf blade(lamina) is modified into pitcher in pitcher plant. 22. Which of the following plants possesses flower with largest diameter? [A] Rafflesia [B] Drosera [C] Bladderwort [D] Butterwort Explanation: Rafflesia is the largest flower. 23. Which of the following greenhouse gases is present in very high quantity ? [A] Propane [B] Ethane [C] Carbon dioxide [D] Methane

Explanation: In order, the most abundant greenhouse gases in Earth's atmosphere are: Water vapour, Carbon dioxide (CO2), Methane, Nitrous oxide, Chlorofluorocarbons (CFCs)

MEE-2016 SET-A Explanations By Pankaj Mishra

7

24. Ultraviolet radiation from sunlight causes a reaction that produces [A] fluoride [B] ozone [C] sulphur dioxide [D] carbon monoxide

Explanation: The process of ozone creation and destruction is called the Chapman cycle and starts with the photolysis of molecular oxygen followed by reaction of the oxygen atom with another molecule of oxygen to form ozone.

25. Which of the following covers a greater number of organisms? [A] Class [B] Genus [C] Order [D] Family

Explanation: From low to high rank: I. Species

II. Genus III. Family IV. Order V. Class

VI. Phylum(Division) VII. Kingdom

VIII. Domain 26. Pteridophytes are also called as [A] phanerogams [B] vascular cryptogams [C] amphibians of the plant kingdom [D] spermatophytes

MEE-2016 SET-A Explanations By Pankaj Mishra

8

Explanation: Pteridophytes have primitive vascular bundles, but they lack seeds, so they are called vascular cryptogams. 27. Gases such as O₂ and CO₂ cross the plasma membrane by [A] primary active transport [B] osmosis [C] secondary active transport [D] passive diffusion Explanation: O₂ and CO₂ transport occurs mostly through passive diffusion. 28. The principal intracellular cation is [A] Na⁺ [B] Cl⁻ [C] K⁺ [D] Ca²⁺ Explanation: Inside the cell(intracellular) K⁺ predominates whereas outside the cell (Extracellular) Na⁺ predominates. 29. Which one of the following is a sulphur-containing amino acid? [A] Cystine [B] Leucine [C] Valine [D] Alanine Explanation: Two amino acids contain sulphur (S) atoms. In cysteine this is in the form of a sulfhydryl group (—SH); in methionine it is a thioether (—S—CH3). Both are hydrophobic. 30. Which one of the following is an eukaryotic organism? [A] Yeast [B] Bacteria [C] Blue-green algae [D] None of the above Explanation: Bacteria and Blue-green algae are prokaryotes.

MEE-2016 SET-A Explanations By Pankaj Mishra

9

31. Where is plasmid found? [A] Plants [B] Humans [C] Bacteria [D] Algae Explanation: Plasmids are found in bacteria(prokaryotes). 32. Blood cells that transport oxygen within the body are the [A] plasmas [B] erythrocytes [C] platelets [D] leukocytes Explanation: Oxygen is transported by RBCs(Erythrocytes) 33. What is the pH of blood? [A] 7.35 [B] 4.45 [C] 10.75 [D] 12.00 Explanation: pH of the blood is slightly basic in humans. 34. Which one is correct for binomial names? [A] Generic and specific names are printed in italics [B] They can be based on some person's name as well [C] They are always Latinized [D] All of the above 35. Ends of two bones are connected by [A] muscle [B] tendon [C] ligament [D] cartilage Explanation: Ligament joins bones to bones whereas tendon joins bones to muscles.

MEE-2016 SET-A Explanations By Pankaj Mishra

10

36. Which blood group is a universal recipient? [A] A [B] B [C] AB [D] O Explanation: AB blood group has no antibody in the plasma, so no cross-reaction occurs with any antigen of the ABO system. So it is a universal recipient. 37. Transpiration helps in [A] ascent of sap [B] flow of mineral along with water [C] active absorption of water [D] temperature regulation in plants Explanation: Transpiration increases in response to increasing temperature for some time, then it becomes constant. Also many xerophytes do not transpire during day. So option [A] is a better option with few exceptions. 38. Which elements help in transport of electrons from water in photosynthesis? [A] Mn and Cl [B] Na and Cl [C] Na and K [D] Na and Mn Explanation: Transport of electrons from water occurs at oxygen evolving complex containing Mg in presence of Cl ions present in PS II(P680). 39. Which of the following parts would be most suitable for raising virus-free plants for micropropagation? [A] Bark [B] Vascular tissue [C] Meristem

MEE-2016 SET-A Explanations By Pankaj Mishra

11

[D] Node Explanation: Continuous cell division and more generalized feature of meristems are good for micropropagation. 40. The common bottle cork is a product of [A] dermatogens [B] phellogen [C] xylem [D] vascular cambium Explanation: Phelloderm, Phellogen(Cork Cambium), Phellem(Cork) forms the layers of periderm. 41. A process that makes important difference between C3 and C4 plants is [A] transpiration [B] glycolysis [C] photosynthesis [D] photorespiration Explanation: Photorespiration is characteristics to C3 plants. 42. Which one of the following is not a gaseous biogeochemical cycle in ecosystem? [A] Sulphur cycle [B] Phosphorous cycle [C] Nitrogen cycle [D] Carbon cycle Explanation: Phosphorous cycle is a sedimentary cycle, whereas Sulphur cycle is a mixed consisting of both gaseous and sedimentary. 43. Ribosomal RNA is actively synthesized in [A] lysosomes [B] nucleolus [C] nucleoplasm [D] ribosomes Explanation: Structurally, a ribosome consists of two subunits, one

MEE-2016 SET-A Explanations By Pankaj Mishra

12

about half the size of the other. The large and small subunits are made separately in the nucleolus, a spherical body inside the nucleus. Once produced, the large and small subunits exit the nucleus separately, then come together in the cytoplasm. 44. A normal visioned man whose father was colour blind marries a woman whose father was also colour blind. They have their first child as a daughter. What are the chances that this child would be colour blind ? [A) 100% [B] 0% [C] 25% [D) 50% Explanation: Since colour blindness is X-linked recessive disease, it is expressed in females only in homozygous condition. So the girl child is a carrier not a colour blind.

45. Which one of the following areas in India is a hot spot of biodiversity? [A] Eastern Ghats [B] Gangetic Plain [C] Sundarbans [D] Western Ghats 46. Which one of the following is correctly matched? [A] Onion – Bulb [B] Ginger − Sucker [C] Chlamydomonas – Conidia [D] Yeast – Zoospore

MEE-2016 SET-A Explanations By Pankaj Mishra

13

Explanation: Ginger is rhizome, Chlamydomonas by zygospore, Yeast by by buding etc. 47. Which one of the following microbes forms symbiotic association with plants and helps them in their nutrition? [A] Azotobacter [B] Aspergillus [C] Glomas [D] Trichoderma Explanation: Glomus is a genus of arbuscular mycorrhizal (AM) fungi, and all species form symbiotic relationships (mycorrhizas) with plant roots. Glomus is the largest genus of AM fungi 48. If one strand of DNA has the nitrogenous base sequence at ATCTG, what would be the complementary RNA strand sequence? [A] TTAGU [B] UAGAC [C] AACTG [D] ATCGU Explanation: According to complementary base pairing, ATCTG on one strand have TAGAC in DNA, since RNA has Uracil in place of Thymine, the sequence is UAGAC. 49. The most abundant protein in the animal world is [A] Trypsin [B] Haemoglobin [C] Collagen [D] Insulin Explanation: Chemically, collagen fibers consist of the protein collagen, which is the most abundant protein in your body, representing about 25% of the total. 50. The upright pyramid of number is absent in [A] pond

MEE-2016 SET-A Explanations By Pankaj Mishra

14

[B] forest [C] lake [D] grassland Explanation: No correct option. Pyramid of numbers represent the number of organisms in each trophic level. They may be upright (e.g. Grassland ecosystem), inverted (parasitic ecosystem) or dumbbell shaped (forest ecosystem). Since in question Upright pyramid absent(i.e. inverted is asked), the best option to go with is forest(dumbbell shaped). 51. Removal of introns and joining of exons in a defined order during transcription is called [A] looping [B] inducing [C] slicing [D] splicing Explanation: All the introns and the exons are initially transcribed into RNA but, after transcription, the introns are removed by splicing and the exons are joined to yield the mature RNA. 52. F₂ generation in a Mendelian cross showed that both genotypic and phenotypic ratios are same as 1: 2: 1. It represents a case of [A] co-dominance [B] monohybrid cross with complete dominance [C] dihybrid cross [D] monohybrid cross with incomplete dominance Explanation:

MEE-2016 SET-A Explanations By Pankaj Mishra

15

53. Gymnosperms are also called softwood spermatophytes, because they lack [A] cambium [B] phloem fibres [C] thick-walled tracheids [D] xylem fibres Explanation: hardwoods are angiosperm woods and the softwoods are conifer woods. The structure of conifer wood is simpler than that of most angiosperms. The principal features of conifer wood are its lack of vessels and thick walled tracheids. 54. The coconut water and the edible part of coconut are [A] endosperm [B] endocarp [C] mesocarp [D] embryo Explanation: If a cell wall is formed it will form after free-nuclear divisions. Commonly referred to as liquid endosperm. Coconut water is an example of this. Coconut white part is cellular endosperm 55. Cuscuta is an example of [A] ectoparasitism [B] broodparasitism [C] predation [D] endoparasitism Explanation: Cuscuta is an ectoparasite. 56. Biolistic (gene-gun) is suitable for [A] DNA fingerprinting [B] disarming pathogen vectors [C] transformation of plant cells [D ] constructing recombinant DNA by joining with vectors Explanation: Biolistic is used for transformation of plant cells.

MEE-2016 SET-A Explanations By Pankaj Mishra

16

57. In genetic engineering, the antibiotics are used [A] as selectable markers [B] to select healthy vectors [C] to keep the cultures free of infection [D] as sequences from where replication starts Explanation: Selectable markers, enable any cells containing the vector to be selected or identified; in this case antibiotics selects healthy vectors. 58. Identify the meiotic stage in which the homologous chromosomes separate while the sister chromatids remain associated at their centromeres. [A] Metaphase – I [B] Metaphase – II [C] Anaphase – I [D] Anaphase – II Explanation: Anaphase I is marked by the separation of homologous chromosomes. The two chromosomes of a homologous pair are pulled toward opposite poles. Although the homologous chromosomes separate, the sister chromatids remain attached and travel together. 59. Which one of the following human organs is often called the graveyard of RBCs? [A] Gallbladder [B] Kidney [C] Spleen [D] Liver Explanation: RBCs are destroyed in Spleen. So they are called as graveyard of RBCs. 60. Which one of the following represents a palindromic sequence in DNA? [A]

MEE-2016 SET-A Explanations By Pankaj Mishra

17

[B]

[C]

[D]

Explanation: Most recognition sequences are palindromic—sequences that read the same forward and backward. 61. The hormone which controls cell division and cell differentiation is [A] ABA [B] auxin [C] gibberellins [D] cytokinin Explanation: Cytokinins stimulate cell division and cell differentiation. 62. Thorn is a modification of [A] stem [B] leaf [C] stipule [D] root Explanation: Stem have vascular connection and can bear flower or leaf. 63. DDT residues are rapidly passed through food chain causing

MEE-2016 SET-A Explanations By Pankaj Mishra

18

biomagnification because DDT is [A] moderately toxic [B] nontoxic to aquatic animals [C] water soluble [D] liposoluble Explanation: Because of its lipophilic properties, DDT can bioaccumulate, especially in predatory birds. 64. Grana are present in [A] mitochondria [B] chloroplast [C] endoplasmic reticulum [D] ribosome Explanation: Grana are present in chloroplast. 65. The most important component of the oral contraceptive pills is [A] progesterone [B] growth hormone [C] thyroxine [D] luteinizing hormone Explanation: Contraceptive pills of the combination type contain progestin and estrogens in concentrations that decrease the secretion of FSH and LH and thereby inhibit development of ovarian follicles and ovulation, inhibit transport of ova and sperm in the uterine tubes, and block implantation in the uterus. 66. Human insulin is being commercially produced from a transgenic species of [A] Escherichia [B) Mycobacterium [C] Rhizobium [D] Saccharomyces Explanation: One of the first commercial products produced by recombinant DNA technology was the protein insulin. The gene for

MEE-2016 SET-A Explanations By Pankaj Mishra

19

human insulin was isolated and inserted into bacteria, which were then multiplied and used to synthesize human insulin. 67. HIV has a protein coat and a genetic material which is [A] single-stranded DNA [B] double-stranded DNA [C] single-stranded RNA [D] double-stranded RNA Explanation: HIV virus is a retrovirus having ssRNA as genetic material. 68. Plasmolysis occurs when the cell is placed in [A] isotonic solution [B] hypotonic solution [C] hypertonic solution [D] None of the above Explanation: Hypertonic solution causes exosmosis causing plasmolysis. 69. Which one of the following acids is a derivative of carotenoids? [A] Indole 3-acetic acid [B] Gibberellic acid [C] Abscisic acid [D] Indole butyric acid Explanation: Abscisic acid is synthesized from a carotenoids intermediate. 70. Use of transgenic plants as biological factories for the production of special chemicals is called [A] molecular farming [B] molecular genetics [C] molecular mapping [D] dry farming Explanation: The products of pharming are recombinant proteins or their metabolic products. Also referred to as pharming, is a sub-

MEE-2016 SET-A Explanations By Pankaj Mishra

20

sector of the biotechnology industry that involves the process of genetically engineering plants so that they can produce certain types of therapeutically important proteins and associate molecules such as peptides and secondary metabolites. 71. Which-of the following bacteria is utilized in 'Gobar' gas plant? [A] Methanogens [B] Nitrifying bacteria [C] Ammonifying bacteria [D] Denitrifying bacteria Explanation: 'Gobar' gas plant produces methane gas in anaerobic condition by methanogens. 72. In Down's syndrome of a male child, the sex complement is [A] XO [B] 45XY [C] 45XX [D] XXY Explanation: Down's syndrome occurs due to 21 trisomy(2n+1), i.e. (44 autosomes + two sex chromosomes + one extra 21st chromosome=45XY for a male child). 73. In history of biology, human genome project led to the development of [A] biotechnology [B] biomonitoring [C] bioinformatics [D] biosystematics Explanation: DNA sequence information, now contains more than 19 billion base pairs of sequence, and this number increases in size every month. Cataloging, storing, retrieving, and analyzing this huge data set are a major challenge of modern genetics. Bioinformatics is an emerging field consisting of molecular biology and computer science that centers on developing databases, computer-search

MEE-2016 SET-A Explanations By Pankaj Mishra

21

algorithms, gene prediction software, and other analytical tools that are used to make sense of DNA, RNA, and protein sequence data. 74. The 'mule' is the result of which one of the following? [A] Inbreeding depression [B] Outbreeding [C] Crossbreeding [D] Interspecific hybridization Explanation: Interspecific hybrids are bred by mating two species, normally from within the same genus. A mule is the offspring of a male donkey (jack) and a female horse (mare). 75. In which condition, the gene ratio remains constant for any species? [A] Sexual selection [B] Random mating [C] Mutation [D] Gene flow Explanation: Sexual selection, Mutation, Gene flow and Non-random mating affects the way in which alleles combine to form genotypes and alters the genotypic frequencies of a population. So option [B] is correct. 76. An animal having notochord throughout its life is [A] Labeo [B] Hyla [C] Amphioxus [D] Calotes 77. Which one of the following binds with haemoglobin irreversibly? [A] Carbon dioxide [B] Nitrogen [C] Carbon monoxide

MEE-2016 SET-A Explanations By Pankaj Mishra

22

[D] Oxygen Explanation: blood becomes saturated with CO, which has a stronger affinity for hemoglobin than oxygen and binds irreversibly. 78. Which one of the following is a ball-and-socket joint? [A] Femur and pelvic girdle [B] Knee joint [C] Elbow joint [D] Skull joint Explanation: Ball-and-socket joint is found in Femur and pelvic girdle and in humerus and pectoral girdle. 79. Which one of the following is correct in case of a test-tube baby? [A] Foetus is grown in a test tube [B] Fertilization is done outside body [C] Fertilization is done inside body [D] The embryo is developed without fertilization Explanation: In vitro fertilization (IVF) is the most common and most effective type of assisted reproductive technology (ART) to help women become pregnant. The IVF procedure involves fertilizing an egg outside the body, in a laboratory dish, and then implanting it in a woman's uterus. 80. Which element is absorbed in elemental form by plants? [A] Carbon [B] Oxygen [C] Nitrogen [D Phosphorus Explanation: Oxygen is absorbed in elemental form as well as in the form water(Combined form). 81. Silver fish is a/an [A] true fish [B] insect [C] marine fish

MEE-2016 SET-A Explanations By Pankaj Mishra

23

[D] None of the above 82. Where are islets of Langerhans found? [A] Pancreas [B] Liver [C] Pituitary [D] Spleen Explanation: A type of cell in the pancreatic islets (islets of Langerhans) in the pancreas that secretes the hormone glucagon. Also termed an A cell. 83. The terms used to mean the bisexual are [A] homothallic or dioecious [B] heterothallic or monoecious [C] heterothallic or dioecious [D] homothallic or monoecious Explanation: homothallic describes a species in which the individuals are self-fertile, where as monoecious means having the anthers and carpels produced in separate flowers on the same individual. On the other hand, dioecious means unisexual; having male and female (or staminate and ovulate) elements on different individuals of the same species. 84. Which of the following is not pyrimidine? [A] Cytosine [B] Thymine [C] Uracil [D] Guanine Explanation: There are three pyrimidines found in nucleic acids: cytosine (C), thymine (T), and uracil (U). 85. An important feature of arthropod is [A] exoskeleton

MEE-2016 SET-A Explanations By Pankaj Mishra

24

[B] antenna [C] jointed legs [D] tracheal respiration Explanation: The characteristics features of arthropods have are jointed legs. 86. Coagulation of blood in the vessels is prevented during normal condition by [A] heparin [B] plastin [C] thrombin [D] prothrombin Explanation: Heparin produced by liver prevents coagulation of blood in blood vessels. 87. Who proposed the term 'ecosystem'? [A] Odum [B] Gardner [C] Warming [D] Tansley 88. The protein directly associated for vision is [A] collagen [B] rhodopsin [C] myosin [D] fibrin Explanation: Rhodopsin, a colored protein that undergoes structural changes when it absorbs light, in the outer segment of a photoreceptor. 89. The principal energy storing molecule is [A] NADP [B] FAD [C] ATP

MEE-2016 SET-A Explanations By Pankaj Mishra

25

[D] ADP Explanation: Energy is stored primarily in the form of ATP in body. 90. The hormone responsible for apical dominance is [A] IBA [B] IAA [C] GA [D] florigen Explanation: Auxins exhibit apical dominance, IAA is an auxin. 91. Which one of the following blood vessels is without valves ? [A] Artery [B] Pulmonary aorta [C) Vein [D] Systemic aorta Explanation: Artery does not have valves in them as they flow in high pressure. 92. Carotid artery supplies blood to [A] brain [B] skin [C] lung [D] limbs 93. Tears are secreted by [A] meibomian glands [B] lacrimal glands [C] harderian glands [D] sebaceous glands Explanation: The lacrimal glands, each about the size and shape of an almond, secrete lacrimal fluid, which drains into 6–12 excretory lacrimal ducts that empty tears onto the surface of the conjunctiva of the upper lid.

MEE-2016 SET-A Explanations By Pankaj Mishra

26

94. Which one of the following is a transgenic plant [A] Golden rice [B] Hybrid carrot [C] Joha rice [D] Camellia sinensis Explanation: Golden rice is a variety of rice (Oryza sativa) produced through genetic engineering to biosynthesize beta-carotene, a precursor of vitamin A. 95. Distribution of endemic species is [A] cosmopolitan [B] restricted [C] global [D] only in India Explanation: Endemism is the ecological state of a species being unique to a defined geographic location, such as an island, nation, country or other defined zone, or habitat type. 96. Major ecological community of plants and animals extending over large natural area is called [A] biota [B] bioregion [C] biome [D] biosphere Explanation: Biomes are often defined by abiotic factors such as climate, relief, geology, soils and vegetation. 97. Compared to blood our lymph has [A] no plasma [B] more RBCs and less WBCs [C] plasma without proteins [D] more WBCs and no RBCs Explanation: Lymph is a clear-to-white fluid made of: White blood

MEE-2016 SET-A Explanations By Pankaj Mishra

27

cells, especially lymphocytes, the cells that attack bacteria in the blood. 98. The two gases making highest relative contribution to the greenhouse gases are [A] CH₄ and N₂O [B] CO₂ and CH₄ [C] CO₂ and N₂O [D] CFCs and N₂O Explanation: Carbon dioxide is the principal greenhouse gas; other greenhouse gases are methane, chlorofluorocarbons, and nitrogen oxides. 99. ABO blood groups in humans are controlled by the gene I. It has three alleles, i.e. Iᴬ Iᴮ, and i. Since, there are three different alleles, six different genotypes are possible. How many phenotypes can occur? [A] Three [B] Four [C] One [D] Two Explanation: Since three alleles, possible arrangements are Iᴬ Iᴮ( Blood group AB), Iᴬ i or Iᴬ Iᴬ (Blood group A), Iᴮi or Iᴮ Iᴮ (Blood Group B), and ii (Blood group O). So for six genotypes, four phenotypes are possible. 100. Peripatus is a connecting link between [A] Coelenterata and Porifera [B] Ctenophora and Platyhelminthes [C] Mollusca and Echinodermata [D] Annelida and Arthropoda Explanation: Peripatus(The Walking Worm) is the connecting link between Annelida and Arthropoda.