{"id":9585,"date":"2025-03-08T16:16:36","date_gmt":"2025-03-08T10:46:36","guid":{"rendered":"https:\/\/physicscatalyst.com\/article\/?p=9585"},"modified":"2025-03-08T16:16:41","modified_gmt":"2025-03-08T10:46:41","slug":"biology-class-12-full-course-mcq","status":"publish","type":"post","link":"https:\/\/physicscatalyst.com\/article\/biology-class-12-full-course-mcq\/","title":{"rendered":"Biology Class 12 Full Course MCQ"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">Multiple choice Questions <\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li>The innermost wall layer of the microsporangium is<br>a. endothelium<br>b. sporogenous tissue<br>c. tapetum<br>d. intine<\/li>\n\n\n\n<li>In embryo sac, the ploidy of Central cell, synergid and egg cell respectively is<br>a. 2n, n, n<br>b. n, 2n, n<br>c. n, 2n, 2n<br>d. 2n, n, 2n<\/li>\n\n\n\n<li>Which of the following contraceptives involves the role of hormones?<br>a. Lactational amenorrhea<br>b. Multiload 375<br>c. Lippes loop<br>d. Both (b) and (c )<\/li>\n\n\n\n<li>Separation of two pairs of alleles independently of each other during gamete formation, resulting in both parental and recombinant traits, explains<br>a. Law of dominance<br>b. Law of segregation<br>c. Linkage<br>d. Law of independent assortment<\/li>\n\n\n\n<li>Which of the following is not the producer of single cell protein?<br>a. Methylophilus methylotrophus<br>b. Candida utilis<br>c. Fusarium graminearum<br>d. Mycobacterium leprae<\/li>\n\n\n\n<li>The recombinant protein used to prevent acute kidney transplantation rejection is<br>a. OKT-3<br>b. t-PA<br>c. ReoPro<br>d. INF &#8211; alpha<\/li>\n\n\n\n<li>The equation for Verhulst Pearl Logistic Growth is<br>a. dN\/dt = rN (K- N)\/K<br>b. dN\/dt = r(K- N)\/K<br>c. dN\/dt = (b-d)N<br>d. dN\/dt = (r-N)\/K<\/li>\n\n\n\n<li>Read the given statements<br>I. In all sexually reproducting organisms, meiosis always occur only at the time of gamete formation.<br>II. The germinal cells are haploid so undergo mitotic division to form gametes.<br>III. In Chlamydomonas, the meiosis occur after zygote formation to produce diploid organisms.<br>IV. Meiosis occurs in sporangia to produce meiospores.<br>Of the above statements, the incorrect ones are-<br>a. I and IV only<br>b. II and IV only<br>c. II and III only<br>d. I, III and IV only<\/li>\n\n\n\n<li>In the following tables find the incorrect match of drug and related statement. Drug Statement<br>a. S Smack Derivative of morphine<br>b. Marijuana Obtained from Erythroxylum coca<br>c. Cannabinoid Obtained from Cannabis sativa<br>d. Cocaine Causes lack of sleep and appetite<\/li>\n\n\n\n<li>Which of the following statement is correct?<br>a. Down syndrome is due to non- disjunctioning of X- chromosome during oogenesis, resulting in both X- chromosome passing into single egg.<br>b. Phenolketonaria, an inborn error of metabolism is a sex-linked recessive trait.<br>c. Haemophilia is an autosomal disorder affecting both males and females.<br>d. Colour blindness is a sex-linked recessive disorder showing criss-cross inheritance.<\/li>\n\n\n\n<li>Sickle Cell anemia is caused by the substitution of glutamic acid by valine (Val). Which of the following triplets codes for Valine.<br>a. GAG<br>b. GUG<br>c. GAA<br>d. AAG<\/li>\n\n\n\n<li>Which of the following is a vector borne disease?<br>a. Ringworm<br>b. Amoebiasis<br>c. Ascariasis<br>d. Filariasis<\/li>\n\n\n\n<li>Transplanted organs are often rejected by the recipient&#8217;s immune system. It is due to<br>a. T- Lymphocytes, responsible for cell mediated immune response<br>b. B- Lymphocytes, mediating humoral immune response<br>c. Programmed cell death<br>d. Property of contact inhibition<\/li>\n\n\n\n<li>Consider the following two statements<br>I. An effective germplasm collection is the prerequisite step for a plant breeding programme.<br>II. Genetic variability is the root of any breeding programme.<br>a. Statement I is incorrect but statement II is correct.<br>b. Both statements I and II are correct.<br>c. Both statement I and II are incorrect<br>d. Statement I is correct but statement II is incorrect<\/li>\n\n\n\n<li>Select an incorrect option.<br>a. Cyclosporin A- Trichoderma polysporum<br>b. Streptokinase- Streptococcus<br>c. Statins- Monascus purpureus<br>d. Citric acid- Clostridium acetobutylicum<\/li>\n\n\n\n<li>The pathogen responsible for filariasis is<br>a. Wuchereria<br>b. Ascaris<br>c. Entamoeba<br>d. Anopheles<\/li>\n\n\n\n<li>Among the given examples, allopolyploid and autopolyploid respectively are<br>a. Maize and Cotton<br>b. Nicotiana and Gram<br>c. Triticale and Helianthus<br>d. Rice and Wheat<\/li>\n\n\n\n<li>Obligatory parthenogenesis occurs in<br>a. Lacerta saxicola<br>b. Typhlina bramina<br>c. Monocystis<br>d. Both (a) and (b)<\/li>\n\n\n\n<li>A segment of a DNA has sequence of nucleotides TTAGATCCATT. Which of the following segment show frame shift mutation?<br>a. ATT AGG ATC CATT<br>b. TTG GGA TCC ATT<br>c. TTA AGA TCC ATT<br>d. TTA GAA TCC ATT<\/li>\n\n\n\n<li>Replacement of the lighter- coloured variety peppered moth (Boston betularia) to it&#8217;s darker variety (Boston carbonaria) in England is the example of<br>a. Natural selection<br>b. Regeneration<br>c. Genetic isolation<br>d. Temporal isolation<\/li>\n\n\n\n<li>A monoecious animal in which self fertilization occurs in<br>a. Earthworm<br>b. Sponge<br>c. Tapeworm<br>d. All of these<\/li>\n\n\n\n<li>Conversion of milk into curd improves its nutritional quality by increasing<br>a. Vitamin B12<br>b. Vitamin A<br>c. Vitamin D<br>d. Vitamin E<\/li>\n\n\n\n<li>In the experiment for the selection of recombinants, white colonies are obtained. What can you conclude from the result obtained?<br>a. These are recombinant colonies as the presence of DNA insert results in insertional inactivation of the beta galactosidase gene.<br>b. These are non- recombinant colonies as the absence of DNA insertion does not lead to insertional inactivation.<br>c. These are recombinant colonies as the absence of DNA insert does not need insertional inactivation.<br>d. These are non-recombinant colonies because the plasmid in the bacteria does not have an insert.<\/li>\n\n\n\n<li>Which of the following is\/are examples of recent extinctions?<br>a. Dodo<br>b. Quagga<br>c. Thylacine<br>d. All of these<\/li>\n\n\n\n<li>What will be the birth rate if there were 20 lotus plants last year and 8 new plants added through reproduction?<br>a. 2.5<br>b. 0.6<br>c. 0.4<br>d. 0.8<\/li>\n\n\n\n<li>During on unfavorable conditions, many zooplankton species present in lakes and ponds enter a stage called<br>a. Dormancy<br>b. Aestivation<br>c. Diapause<br>d. Hibernation<\/li>\n\n\n\n<li>Very small animals are really found in polar region because they have<br>a. smaller surface area than to their volume<br>b. slow heart rate<br>c. larger surface area then their volume<br>d. high heart rate<\/li>\n\n\n\n<li>Verhulst- Pearl Logistic growth results in \u2026\u2026\u2026 curve?<br>a. linear<br>b. sigmoid<br>c. parabolic<br>d. J- shaped<\/li>\n\n\n\n<li>Hotspots are best described as<br>a. areas maintained by government and reserve for betterment of wildlife<br>b. ecological\/ biogeographical area, where biological diversity along with natural and cultural resources is protected<br>c. areas with high degree of endemism and high level of species richness<br>d. tracts of land with or without lake where small animals\/flora can take refuge without being hunted.<\/li>\n\n\n\n<li>Identify the plant that possesses both chasmogamous and cleistogamous flowers to ensure seed formation.<br>a. Catharanthus<br>b. Oxalis<br>c. Mirabilis<br>d. Vallisneria<\/li>\n\n\n\n<li>Which of yhe following statements are correct?<br>I. Mammary glands are modified sweat glands.<br>II. In Dicot embryo, haustorium is the last fell of the suspensor at the end adjacent to the embryo.<br>III. Eukaryotic DNA, found in nucleus and mitochondria is circular, double standard.<br>IV. Carboniferous period is the age of amphibians.<br>a. II, III and IV only<br>b. III only<br>c. I and IV only<br>d. I, II and IV only<\/li>\n\n\n\n<li>Which among the following cloning vectors carries the smallest fragment of DNA?<br>a. YAC<br>b. BAC<br>c. Phagemid<br>d. Lambda phage<\/li>\n\n\n\n<li>Which poultry disease is caused by manganese deficiency in ration, resulting in the enlargement of tibiometatarsal joint, twisting and bending of the end of Tibia?<br>a. Aspergillosis<br>b. Coccidiosis<br>c. Mycosis<br>d. Perosis<\/li>\n\n\n\n<li>Cryopreservation is prevention of tissue cultures and animal cells at\u2026\u2026\u2026. in \u2026\u2026\u2026.<br>a. -196\u00b0C, liquid nitrogen<br>b. 0\u00b0C, chilled ethanol<br>c. &#8211; 180\u00b0C, dry ice<br>d. &#8211; 20\u00b0C, formaldehyde<\/li>\n\n\n\n<li>In the areas with intense solar radiations, photochemical smog forms<br>a. sulfurous smog<br>b. brown air<br>c. black air<br>d. grey air<\/li>\n\n\n\n<li>Consider the following statements regarding female gametophyte in aangiosperm<br>I. The angiospermic female gametophyte is an oval multicellular haploid structure embedded in nucellus of ovule.<br>II. It comprises of 8 nuclei formed as a result of 1 mitotic division of MMC and 3 mitotic division of Megaspore.<br>III. The micropylar cells act as vegetative cells of embryo sac which provide nourishment to rest of the cells.<br>IV. The central cell is the largest haploid cell of gametophyte containing highly vacuolated cytoplasm rich in reserve food.<br>V. The synergids of egg apparatus act as shock absorbers during the penetration of pollen tube into embryo sac.<br>Of the above statements<br>a. Only I and II are correct<br>b. Only II and IV are correct<br>c. Only I and V are correct<br>d. Only II, III and IVare correct<\/li>\n\n\n\n<li>Immunoglobin X is the immunoglobin found in sweat, tears, saliva, mucus, colostrum and gastrointestinal secretion. Identify X?<br>a. IgA<br>b. IgM<br>c. IgE<br>d. IgG<\/li>\n\n\n\n<li>A TtYy plant was self crossed. The ratio of recombinant progenies will be<br>a. 9:3<br>b. 3:3<br>c. 3:1<br>d. 1:3<\/li>\n\n\n\n<li>Identify the type of interactio shown by sucker fish attached to Shark for getting protection from predators:<br>a. Predation<br>b. Amensalism<br>c. Mutualism<br>d. Commensalism<\/li>\n\n\n\n<li>Identify the phase of menstrual cycle from the given events.<br>I. Release of progesterone from Corpus luteum.<br>II. Graafian follicle changes into Corpus luteum.<br>III. Thickening of endometrium and release of watery mucus from Uterine glands.<br>a. Menstrual phase<br>b. Luteal phase<br>c. Follicular phase<br>d. Ovulatory phase<\/li>\n\n\n\n<li>Which of the following is correctly matched?<br>I. Alpha- 1- antitrypsin &#8211; Treatment of phenylketonuria<br>II. Rosie &#8211; protein enriched milk<br>III. Mice &#8211; Testing of polio vaccine safety<br>IV. ANDI &#8211; Transgenic pig<br>a. A and C only<br>b. B and C only<br>c. B, C and D only<br>d. A, B and C only<\/li>\n\n\n\n<li>Amino acids deficient in proteins of cereals and millets are<br>a. Lysine and cysteine<br>b. Cysteine and methionine<br>c. Leucine and tryptophan<br>d. Lysine and tryptophan<\/li>\n\n\n\n<li>Which of the following is not an organo- pesticide?<br>a. Malathion<br>b. Benzene hexachloride<br>c. Parathion<br>d. Carbamate<\/li>\n\n\n\n<li>Clitoris is :<br>a. Structure which lies below the urethral opening<br>b. Thick outer lip of vaginal orifice<br>c. Membrane that covers the vaginal orifice partially<br>d. Penis homologous to glans penis<\/li>\n\n\n\n<li>Montreal protocol, an International Treaty was signed to<br>a. control emission of carbon dioxide to reduce global warming.<br>b. Limit production of chlorofluorocarbons.<br>c. Reduce emission of overall greenhouse gases at a level of 5%.<br>d. All of these.<\/li>\n\n\n\n<li>The missing link between amphibians and reptile is<br>a. Lycaenops<br>b. Ichthyostega<br>c. Seymouria<br>d. Archaeopteryx<\/li>\n\n\n\n<li>After sewage treatment, the water samples A, B and C are tested for BOD value and recorded value of BOD was 6mg\/L, 400mg\/L and 20mg\/L respectively. What is the correct about these samples?<br>a. Sample A could be taken from untreated sewage water.<br>b. Sample B could be belongs to secondary effluent from sewage water treatment.<br>c. Sample C could be taken from river water.<br>d. Sample A could be taken from river water.<\/li>\n\n\n\n<li>Extinction of passenger pigeon and Steller&#8217;s sea cow was due to<br>a. fragmentation of habitat<br>b. over exploitation by human<br>c. introduction of superior predator species<br>d. extinction of prey population<\/li>\n\n\n\n<li>Organisms also referred to as primary consumers are<br>a. Producers<br>b. Detrivores<br>c. Herbivores<br>d. Carnivores<\/li>\n\n\n\n<li>Which of the following alcoholic drinks are produced without distillation<br>a. Whisky<br>b. Beer<br>c. Rum<br>d. Brandy<\/li>\n<\/ol>\n\n\n\n<p><strong>Answer Sheet<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>c<\/li>\n\n\n\n<li>a<\/li>\n\n\n\n<li>a<\/li>\n\n\n\n<li>d<\/li>\n\n\n\n<li>d<\/li>\n\n\n\n<li>a<\/li>\n\n\n\n<li>a<\/li>\n\n\n\n<li>c<\/li>\n\n\n\n<li>b<\/li>\n\n\n\n<li>d<\/li>\n\n\n\n<li>b<\/li>\n\n\n\n<li>b<\/li>\n\n\n\n<li>a<\/li>\n\n\n\n<li>b<\/li>\n\n\n\n<li>d<\/li>\n\n\n\n<li>a<\/li>\n\n\n\n<li>b<\/li>\n\n\n\n<li>d<\/li>\n\n\n\n<li>a<\/li>\n\n\n\n<li>a<\/li>\n\n\n\n<li>d<\/li>\n\n\n\n<li>a<\/li>\n\n\n\n<li>a<\/li>\n\n\n\n<li>d<\/li>\n\n\n\n<li>c<\/li>\n\n\n\n<li>c<\/li>\n\n\n\n<li>c<\/li>\n\n\n\n<li>b<\/li>\n\n\n\n<li>c<\/li>\n\n\n\n<li>b<\/li>\n\n\n\n<li>c<\/li>\n\n\n\n<li>d<\/li>\n\n\n\n<li>d<\/li>\n\n\n\n<li>a<\/li>\n\n\n\n<li>b<\/li>\n\n\n\n<li>c<\/li>\n\n\n\n<li>a<\/li>\n\n\n\n<li>b<\/li>\n\n\n\n<li>d<\/li>\n\n\n\n<li>b<\/li>\n\n\n\n<li>b<\/li>\n\n\n\n<li>d<\/li>\n\n\n\n<li>b<\/li>\n\n\n\n<li>d<\/li>\n\n\n\n<li>b<\/li>\n\n\n\n<li>c<\/li>\n\n\n\n<li>d<\/li>\n\n\n\n<li>b<\/li>\n\n\n\n<li>c<\/li>\n\n\n\n<li>b<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"<p>Multiple choice Questions Answer Sheet<\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[518],"tags":[],"class_list":["post-9585","post","type-post","status-publish","format-standard","hentry","category-biology"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - 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