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MCQOPTIONS
This section includes 14620 Mcqs, each offering curated multiple-choice questions to sharpen your NEET knowledge and support exam preparation. Choose a topic below to get started.
| 11051. |
Most famous nitrogen fixing bacterium/biofertilizer is [Kerala PMT 2000; JIPMER 2000] |
| A. | Nitrobacter |
| B. | Nitrosomonas |
| C. | Nitrococcus |
| D. | Rhizobium |
| Answer» E. | |
| 11052. |
The main ingredient of south Indian dishes is |
| A. | Green gram |
| B. | Black gram |
| C. | Wheat |
| D. | Chana |
| Answer» C. Wheat | |
| 11053. |
Which of the following is a disaccharide [KCET (Med.) 1999] |
| A. | Ribose |
| B. | Maltose |
| C. | Glucose |
| D. | Cellulose |
| Answer» C. Glucose | |
| 11054. |
Penicillin was discovered by [CBSE PMT 1988, MHCET 2001; Orisa JEE 2005] |
| A. | Waksman |
| B. | Dubois |
| C. | Robert Koch |
| D. | A. Fleming |
| Answer» E. | |
| 11055. |
Assertion : Both bryophytes and pteridophytes contain well-developed antheridia. Reason : Biflagellate sperms are formed by their antheridia. |
| A. | If both the assertion and the reason are true and the reason is a correct explanation of the assertion |
| B. | If both the assertion and reason are true but the reason is not a correct explanation of the assertion |
| C. | If the assertion is true but the reason is false |
| D. | If both the assertion and reason are false |
| E. | If the assertion is false but reason is true |
| Answer» E. If the assertion is false but reason is true | |
| 11056. |
Which is preserved in National Park [BHU 2000] |
| A. | Flora |
| B. | Fauna |
| C. | Both a and b |
| D. | None of these |
| Answer» D. None of these | |
| 11057. |
Proteins that kill the same or closely related species of bacteria are called |
| A. | Bacteriolysin |
| B. | Bacteriocin |
| C. | Bacterin |
| D. | Barophile |
| Answer» B. Bacteriocin | |
| 11058. |
Assertion : Red algae contribute in producing coral reef. Reason : Some red algae secrete and deposit calcium carbonate our their walls. [AIIMS 2004] |
| A. | If both the assertion and the reason are true and the reason is a correct explanation of the assertion |
| B. | If both the assertion and reason are true but the reason is not a correct explanation of the assertion |
| C. | If the assertion is true but the reason is false |
| D. | If both the assertion and reason are false |
| E. | If the assertion is false but reason is true |
| Answer» B. If both the assertion and reason are true but the reason is not a correct explanation of the assertion | |
| 11059. |
Torulopsis utilis is [MP PMT 1988] |
| A. | A food yeast |
| B. | Employed for synthesis of citric acid |
| C. | An important intestinal commensal |
| D. | Micro-organism that yields third generation vaccines |
| Answer» B. Employed for synthesis of citric acid | |
| 11060. |
Mine spoil is |
| A. | Wastes from mines |
| B. | Wastes from mine processing |
| C. | Land degraded by mining |
| D. | Both a and b |
| Answer» D. Both a and b | |
| 11061. |
Insectivorous plants are |
| A. | Heterotrophic |
| B. | Saprophytic |
| C. | Parasitic |
| D. | Autotrophic |
| Answer» B. Saprophytic | |
| 11062. |
Chapparal occurs in area |
| A. | Africa |
| B. | Siberia |
| C. | Mediterranean |
| D. | Arabia |
| Answer» D. Arabia | |
| 11063. |
Assertion : Angiosperm and Gymnosperms both are spermatophyta. Reason : Angiosperm and Gymnosperms both form triploid endosperm. |
| A. | If both the assertion and the reason are true and the reason is a correct explanation of the assertion |
| B. | If both the assertion and reason are true but the reason is not a correct explanation of the assertion |
| C. | If the assertion is true but the reason is false |
| D. | If both the assertion and reason are false |
| E. | If the assertion is false but reason is true |
| Answer» D. If both the assertion and reason are false | |
| 11064. |
Read the assertion and reason carefully: Assertion : Stomata are absent in submerged hydrophytes. Reason : Respiration occurs by means of air chambers in submerged plants. [AIIMS 1997] |
| A. | If both the assertion and the reason are true and the reason is a correct explanation of the assertion |
| B. | If both the assertion and reason are true but the reason is not a correct explanation of the assertion |
| C. | If the assertion is true but the reason is false |
| D. | If both the assertion and reason are false |
| E. | If the assertion is false but reason is true |
| Answer» C. If the assertion is true but the reason is false | |
| 11065. |
A sacred plant is |
| A. | Ocimum basilicum |
| B. | Ficus bengalensis |
| C. | Prosopis cineraria |
| D. | Aloe vera |
| Answer» D. Aloe vera | |
| 11066. |
Nucleosomes are bounded by [BHU 1986] |
| A. | RNA |
| B. | Histone\[{{H}_{4}}\] |
| C. | Histone\[{{H}_{3}}\] |
| D. | DNA |
| Answer» E. | |
| 11067. |
Smallest cell organelle is [Pb. PMT 2000] |
| A. | Lysosome |
| B. | Dictyosome |
| C. | Polysome |
| D. | Monosome |
| Answer» E. | |
| 11068. |
Assertion : Glochindium larva rapidly disperse to a great distance. Reason : Glochindium is parasitic on fish. |
| A. | If both the assertion and the reason are true and the reason is a correct explanation of the assertion |
| B. | If both the assertion and reason are true but the reason is not a correct explanation of the assertion |
| C. | If the assertion is true but the reason is false |
| D. | If both the assertion and reason are false |
| E. | If the assertion is false but reason is true |
| Answer» B. If both the assertion and reason are true but the reason is not a correct explanation of the assertion | |
| 11069. |
Cows and buffaloes remain in heat for |
| A. | 24 - 36 hours |
| B. | 24 - 36 days |
| C. | 7 - 10 days |
| D. | 15 - 20 days |
| Answer» B. 24 - 36 days | |
| 11070. |
Maleic hydrazide is used to |
| A. | To prolong dormancy |
| B. | To break dormancy |
| C. | Both [a] and [b] |
| D. | None of the above |
| Answer» B. To break dormancy | |
| 11071. |
Iodine is obtained from the members of |
| A. | Green algae |
| B. | Brown algae |
| C. | Red algae |
| D. | Blue?green algae |
| Answer» C. Red algae | |
| 11072. |
Which one of the following is not a mammal [DPMT 1985] |
| A. | Ant eater |
| B. | Echidna |
| C. | Heloderma |
| D. | Dolphin |
| Answer» D. Dolphin | |
| 11073. |
Algae differ from Bryophyta in possessing [MP PMT 1998] |
| A. | Naked sex organs |
| B. | Sex organs covered with sterile covering |
| C. | Chlorphylls a andb |
| D. | Aerobic respiration |
| Answer» B. Sex organs covered with sterile covering | |
| 11074. |
Assertion : Cro-magnon man has more intelligence than the man of present time. Reason : He is regarded as most recent ancestor of today's man. |
| A. | If both the assertion and the reason are true and the reason is a correct explanation of the assertion |
| B. | If both the assertion and reason are true but the reason is not a correct explanation of the assertion |
| C. | If the assertion is true but the reason is false |
| D. | If both the assertion and reason are false |
| E. | If the assertion is false but reason is true |
| Answer» C. If the assertion is true but the reason is false | |
| 11075. |
Assertion : Plants utilizing first RuBP in\[C{{O}_{2}}\] fixations are called \[{{C}_{3}}\]plants. Reason : Plants utilizing first PEP in \[C{{O}_{2}}\]fixations are called \[{{C}_{4}}\]plants. |
| A. | If both the assertion and the reason are true and the reason is a correct explanation of the assertion |
| B. | If both the assertion and reason are true but the reason is not a correct explanation of the assertion |
| C. | If the assertion is true but the reason is false |
| D. | If both the assertion and reason are false |
| E. | If the assertion is false but reason is true |
| Answer» C. If the assertion is true but the reason is false | |
| 11076. |
Apical dominance is caused by [BHU 1995, 99; MP PMT 2000] |
| A. | Auxin |
| B. | Gibberellin |
| C. | Kinetin |
| D. | ABA |
| Answer» B. Gibberellin | |
| 11077. |
Sting apparatus in honey bee is a modified form of [BHU 2001] |
| A. | Ovipositor |
| B. | Wax glands |
| C. | Alkaline glands |
| D. | Podical valves |
| Answer» B. Wax glands | |
| 11078. |
A man receives his X chromosomes from |
| A. | His mother only |
| B. | His father only |
| C. | Both his mother and father |
| D. | Either his mother or his father |
| Answer» B. His father only | |
| 11079. |
Who proposed the theory that "cells arise only from the pre-existing cells'' [MP PMT 1997] |
| A. | Mohl |
| B. | Virchow |
| C. | Haeckel |
| D. | Brown |
| Answer» C. Haeckel | |
| 11080. |
Assertion : Plasmodium causes disease in female Anopheles mosquitoes. Reason : Female Anopheles mosquitoes feed on human blood. |
| A. | If both the assertion and the reason are true and the reason is a correct explanation of the assertion |
| B. | If both the assertion and reason are true but the reason is not a correct explanation of the assertion |
| C. | If the assertion is true but the reason is false |
| D. | If both the assertion and reason are false |
| E. | If the assertion is false but reason is true |
| Answer» F. | |
| 11081. |
Assertion : Fertilized ovule forms seed. Reason : Ripened ovary forms fruit. |
| A. | If both the assertion and the reason are true and the reason is a correct explanation of the assertion |
| B. | If both the assertion and reason are true but the reason is not a correct explanation of the assertion |
| C. | If the assertion is true but the reason is false |
| D. | If both the assertion and reason are false |
| E. | If the assertion is false but reason is true |
| Answer» C. If the assertion is true but the reason is false | |
| 11082. |
Chromatophores are absent in |
| A. | Chemosynthetic bacteria |
| B. | Pteridophyta |
| C. | Gymnosperms |
| D. | Angiosperms |
| Answer» B. Pteridophyta | |
| 11083. |
Read the assertion and reason carefully: Assertion : The embryo sac is 7? celled, 7 ? nucleated structure. Reason : All cells are haploid. |
| A. | If both the assertion and the reason are true and the reason is a correct explanation of the assertion |
| B. | If both the assertion and reason are true but the reason is not a correct explanation of the assertion |
| C. | If the assertion is true but the reason is false |
| D. | If both the assertion and reason are false |
| E. | If the assertion is false but reason is true |
| Answer» E. If the assertion is false but reason is true | |
| 11084. |
What happens in mitosis |
| A. | Many divisions of a nucleus |
| B. | Cleavage of cytoplasm |
| C. | Nuclear and cytoplasmic division |
| D. | Formation of a paternal nucleus |
| Answer» D. Formation of a paternal nucleus | |
| 11085. |
Which one is characteristic for birds [CPMT 1984; Wardha 2005] |
| A. | They are flying animals |
| B. | They are warm blooded |
| C. | They are Bipedal and have feathres |
| D. | They are quadruped and have scales |
| Answer» D. They are quadruped and have scales | |
| 11086. |
Assertion : In Dionaea, each lamina has marginal teeth. Reason : Marginal teeth of Dionaea help in prey capturing. |
| A. | If both the assertion and the reason are true and the reason is a correct explanation of the assertion |
| B. | If both the assertion and reason are true but the reason is not a correct explanation of the assertion |
| C. | If the assertion is true but the reason is false |
| D. | If both the assertion and reason are false |
| E. | If the assertion is false but reason is true |
| Answer» B. If both the assertion and reason are true but the reason is not a correct explanation of the assertion | |
| 11087. |
The pairing of bivalent synapsis occur in [DPMT 1985] |
| A. | Leptotene |
| B. | Zygotene |
| C. | Pachytene |
| D. | Diplotene |
| Answer» C. Pachytene | |
| 11088. |
Besides mammals, diaphragm also occurs in [JKCMEE 1992] |
| A. | Birds |
| B. | Crocodiles |
| C. | Fishes |
| D. | Toads |
| Answer» C. Fishes | |
| 11089. |
Mycolic acid is present in cell wall of pathogen causing [BHU 1989] |
| A. | Tetanus |
| B. | Cholera |
| C. | Diphtheria |
| D. | Tuberculosis |
| Answer» E. | |
| 11090. |
A hibernating frog respires with |
| A. | Lung |
| B. | Diaphragm |
| C. | Buccal epithelium |
| D. | Skin |
| Answer» E. | |
| 11091. |
High yielding variety of wheat is |
| A. | Sonika |
| B. | Sharbati |
| C. | Sonara |
| D. | All the above |
| Answer» E. | |
| 11092. |
Which one of the following precedes re-formation of the nuclear envelope during M phase of the cell cycle [CBSE PMT 2004] |
| A. | Formation of the contractile ring, and formation of the phragmoplast |
| B. | Formation of the contractile ring, and transcription from chromosomes |
| C. | Decondensation from chromosomes, and reassembly of the nuclear lamine |
| D. | Transcription from chromosomes, and ressembly of the nuclear lamina |
| Answer» D. Transcription from chromosomes, and ressembly of the nuclear lamina | |
| 11093. |
Maize grains are poor in |
| A. | Thiamine and lysine |
| B. | Thiamine and niacin |
| C. | Tryptophan and lysine |
| D. | Tryptophan and thiamine |
| Answer» D. Tryptophan and thiamine | |
| 11094. |
Botanical name of pop corn is |
| A. | Zea mays var tunicata |
| B. | Zea mays var everta |
| C. | Zea mays var indentata |
| D. | Zea mays var amylacea |
| Answer» C. Zea mays var indentata | |
| 11095. |
Assertion : The bryophytes exist in two phases - gametophyte and sporophyte. Reason : The sporophyte is nutritionally independent. |
| A. | If both the assertion and the reason are true and the reason is a correct explanation of the assertion |
| B. | If both the assertion and reason are true but the reason is not a correct explanation of the assertion |
| C. | If the assertion is true but the reason is false |
| D. | If both the assertion and reason are false |
| E. | If the assertion is false but reason is true |
| Answer» D. If both the assertion and reason are false | |
| 11096. |
The name of drug used in cancer treatment produced by biotechnology is [MP PMT 1998] |
| A. | Interferon |
| B. | HGH |
| C. | TSH |
| D. | Insulin |
| Answer» B. HGH | |
| 11097. |
Assertion : Zygospore of Ulothrix forms meiozoospores and meioaplanospores. Reason : Both are motile. |
| A. | If both the assertion and the reason are true and the reason is a correct explanation of the assertion |
| B. | If both the assertion and reason are true but the reason is not a correct explanation of the assertion |
| C. | If the assertion is true but the reason is false |
| D. | If both the assertion and reason are false |
| E. | If the assertion is false but reason is true |
| Answer» D. If both the assertion and reason are false | |
| 11098. |
Among the following which one is not a method of vegetative propagation [AFMC 1990] |
| A. | Budding |
| B. | Layering |
| C. | Sowing |
| D. | Tissue culture |
| Answer» D. Tissue culture | |
| 11099. |
Which of the following position is the base to define the formation place of cell plate at the end of nuclear division [AMU 2005] |
| A. | Microtubulus |
| B. | Vesicles |
| C. | Endoplasmic reticulum |
| D. | Golgi body |
| Answer» C. Endoplasmic reticulum | |
| 11100. |
In the extreme drought condition which of the following plant hormone is produced due to which stomata closes [AMU 2005] |
| A. | ABA |
| B. | I.A.A |
| C. | Gibberellin |
| D. | Ascorbic acid |
| Answer» B. I.A.A | |