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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.
| 12801. |
Streptomycin is produced by or from which micro-organism streptomycin is prepared [DPMT 1982; MP PMT 1997, 2001,04; CPMT 2004] |
| A. | Streptomyces venezuelae |
| B. | Streptomyces griseus |
| C. | Streptomyces scoleus |
| D. | Streptomyces fradie |
| Answer» C. Streptomyces scoleus | |
| 12802. |
Assertion : Plasmids are single stranded extra chromosomal DNA. Reason : Plasmids are found in Eukaryotic cells. [AIIMS 1997, 2002] |
| 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 | |
| 12803. |
Which one of the following forms the spindle apparatus during cell division [Kerala CET 2002] |
| A. | Chromosome |
| B. | Centrosome |
| C. | Ribosome |
| D. | Chondriosome |
| Answer» C. Ribosome | |
| 12804. |
Azolla enriches rice fields with nitrogen due to its association with [Wardha 2001, CET Chd.2001] |
| A. | Anabaena |
| B. | Nostoc |
| C. | Rhizobium |
| D. | Frankia |
| Answer» B. Nostoc | |
| 12805. |
Which of the following pigments is present in all algae [CPMT 1990, 98; J&K CET 2002] |
| A. | Chlorophyll\[-a\] |
| B. | Chlorophyll\[-b\] |
| C. | Chlorophyll\[-c\] |
| D. | Chlorophyll\[-d\] |
| Answer» B. Chlorophyll\[-b\] | |
| 12806. |
The possibility of being outermost layer of cell is highest for which of the following [Bihar MDAT 1991] |
| A. | Plasmalemma |
| B. | Cell membrane |
| C. | Middle lamella |
| D. | Primary wall |
| Answer» E. | |
| 12807. |
Which is a poisonous snake [EAMCET 1998] |
| A. | Enhydrina |
| B. | Typhlops |
| C. | Python |
| D. | Eryx |
| Answer» B. Typhlops | |
| 12808. |
Petroleum resource is [CBSE PMT 1992] |
| A. | Renewable |
| B. | Non-renewable |
| C. | Synthetic and biodegradable |
| D. | Infinite and unconventional |
| Answer» C. Synthetic and biodegradable | |
| 12809. |
Among the following which is not characteristic feature of bryophyta [DPMT 1983] |
| A. | Motile sperms |
| B. | Presence of archegonium |
| C. | Water essential for fertilization |
| D. | Photosynthetically independent sporophyte |
| Answer» E. | |
| 12810. |
Read the assertion and reason carefully to mark the correct option out of the options given below: Assertion : Tranquillizers are called antipsychosis drug. Reason : Tranquillizers are used to treat psychosis. |
| A. | If both assertion and reason are true and the reason is the correct explanation of the assertion. |
| B. | If both assertion and reason are true but reason is not the correct explanation of the assertion. |
| C. | If assertion is true but reason is false. |
| D. | If the assertion and reason both are false. |
| E. | If assertion is false but reason is true. |
| Answer» B. If both assertion and reason are true but reason is not the correct explanation of the assertion. | |
| 12811. |
A clone is a group of individuals obtained through [DPMT 1986] |
| A. | Self pollination |
| B. | Hybridization |
| C. | Vegetative propagation |
| D. | Cross pollination |
| Answer» D. Cross pollination | |
| 12812. |
Phototropism in shoots is attributed to [CPMT 1982; MP PMT 1987] |
| A. | Auxin |
| B. | Gibberellins |
| C. | Cytokinins |
| D. | Abscisic acid |
| Answer» B. Gibberellins | |
| 12813. |
Which of the following enzyme digests other enzymes |
| A. | Dehydrogenases |
| B. | Lipases |
| C. | Peptidases |
| D. | Aldolases |
| Answer» D. Aldolases | |
| 12814. |
Substances which originate at the tip of the stem and control growth elsewhere are [AFMC 1986; CPMT 1993] |
| A. | Food material |
| B. | Auxins or hormones |
| C. | Vitamins |
| D. | Enzymes |
| Answer» C. Vitamins | |
| 12815. |
According to IUCN Red List, what is the statues of Red Panda (Ailurus fulgens) [CBSE PMT 2005] |
| A. | Vulnerable species |
| B. | Critically endangered species |
| C. | Extinct species |
| D. | Endangered species |
| Answer» E. | |
| 12816. |
Read the assertion and reason carefully to mark the correct option out of the options given below: Assertion : HIV infection can be avoided by use of condoms. Reason : Condoms secrete anti-viral interferons. |
| 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\ | |
| 12817. |
The poisonous substances commonly produced by bacteria are known as [Kerala CET 2002; AFMC 2003] |
| A. | Toxin (Exotoxins) |
| B. | Auxins |
| C. | Antibiotic |
| D. | Antitoxins |
| Answer» B. Auxins | |
| 12818. |
Meiosis is found at [MP PMT 2005] |
| A. | Shoot apex |
| B. | Reproductive part |
| C. | Leaves bud |
| D. | Vegetative parts |
| Answer» C. Leaves bud | |
| 12819. |
Maize grains are rich in |
| A. | Thiamine |
| B. | Niacin |
| C. | Lysine |
| D. | Thymine |
| Answer» B. Niacin | |
| 12820. |
Fire-belied toad is [CBSE PMT 1988] |
| A. | Amphiuma |
| B. | Necturus |
| C. | Salamandra |
| D. | Bombinator |
| Answer» E. | |
| 12821. |
Read the assertion and reason carefully: Assertion : Ginger has a prostrate-growing rhizome. Reason : Shoot growth is not effected by gravity. 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» C. If the assertion is true but the reason is false | |
| 12822. |
Assertion : Cytochromes are a group of copper containing electron transferring proteins. Reason : The terminal cytochrome reacts with oxygen. |
| 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. | |
| 12823. |
Phosphorus of ocean becomes available to land plants due to |
| A. | Sea birds |
| B. | Deep sea activities |
| C. | Ocean spray |
| D. | All of these |
| Answer» B. Deep sea activities | |
| 12824. |
Members of class Reptilia are |
| A. | Homoiothermic and amniotic |
| B. | Homoiothermic and anamniotic |
| C. | Poikilothermic and amniotic |
| D. | Poikilothermic and anamniotic |
| Answer» D. Poikilothermic and anamniotic | |
| 12825. |
Assertion : Bacillus butschli is true bacterium. Reason : Its cell wall is composed of acetyl muramic acid. |
| 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 | |
| 12826. |
The wall of cork cell is mostly impregnated with [CPMT 1993] |
| A. | Cellulose |
| B. | Suberin |
| C. | Cutin |
| D. | Lignin |
| Answer» C. Cutin | |
| 12827. |
More fat is accumulated in the liver by using which of the following |
| A. | Saturated fat |
| B. | Starch |
| C. | Alcohol |
| D. | Egg and meat |
| Answer» D. Egg and meat | |
| 12828. |
"Crown gall'' is caused by [BHU 1995; CPMT 1998] |
| A. | Mycobacterium |
| B. | Bacteria |
| C. | Erwinia |
| D. | Clostridium |
| Answer» C. Erwinia | |
| 12829. |
Read the assertion and reason carefully: Assertion : Thorns of Artabotrys are modified floral stalks. Reason : In Antigonon, the upper floral buds develop thorns. |
| 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 | |
| 12830. |
The total number of nitrogenous bases in human genome is estimated to be about [AIIMS 2004] |
| A. | 3.5 million |
| B. | 35 thousand |
| C. | 35 million |
| D. | 3.1 billion |
| Answer» D. 3.1 billion | |
| 12831. |
Assertion : Cycas has two types of root-tap root system and coralloid roots. Reason : Coralloid root contains Anabaena. |
| 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 | |
| 12832. |
Smallest known cell is [CBSE PMT 1988; RPMT 1999] |
| A. | Acetabularia |
| B. | Nostoc |
| C. | Chlamydomonas |
| D. | Pleuropneumonia like organism |
| Answer» E. | |
| 12833. |
Which of the following enzyme is responsible for the conversion of oxaloacetic acid into malic acid |
| A. | PEP oxidase |
| B. | PEP reductase |
| C. | PEP dismutase |
| D. | Malate dehydrogenase |
| Answer» E. | |
| 12834. |
Assertion : Survival of F. hepatica outside the hosts body is not so easy. Reason : Encysted body can survive outside the host body irrespective of the environment. |
| 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 | |
| 12835. |
The beak in birds is toothed in [BHU 1985; MP PMT 1993] |
| A. | Ostrich |
| B. | Kiwi |
| C. | Archaeopteryx |
| D. | Pelican |
| Answer» D. Pelican | |
| 12836. |
Assertion : Baleen is an example of aquatic adapation. Reason : Baleen is a balloon like structure present beneath the skin of mammals. |
| 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 | |
| 12837. |
Read the assertion and reason carefully: Assertion : Spathe, a bract of spadix attracts pollinators. Reason : Spathe is often brightly cloloured. |
| 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 | |
| 12838. |
Which of the following is prototherian [BHU 1999] |
| A. | Platypus |
| B. | Macropus |
| C. | Opposum |
| D. | Bradypus |
| Answer» B. Macropus | |
| 12839. |
The taxon likely to join the category of endangered category in near future is [Kerala 2003] |
| A. | Extinct |
| B. | Rare |
| C. | Vulnerable |
| D. | Living fossil |
| Answer» D. Living fossil | |
| 12840. |
The principal protein of cilia and flagella is [BHU 1986, 88] |
| A. | Tubulin |
| B. | Albumin |
| C. | Globulin |
| D. | Gliadin |
| Answer» B. Albumin | |
| 12841. |
Read the assertion and reason carefully: Assertion : The embryo which is capable to germinate should have well-developed radicle plumule and one or two cotyledons. Reason : In the Orobanchaceae and Orchidaceae the embryo never differentiates a true radicle, plumule and cotyledons, but can germinate. |
| 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 | |
| 12842. |
Leaf fall occurs on abscission layer is formed when the content of [CPMT 1981, 84; AIIMS 1990; MP PMT 1996] |
| A. | Auxin increases |
| B. | Auxin decreases |
| C. | Abscisic acid decreases |
| D. | Gibberellic acid decreases |
| Answer» C. Abscisic acid decreases | |
| 12843. |
Formative hormone is |
| A. | Calines |
| B. | Traumatic acid |
| C. | Both [a] and [b] |
| D. | None of the above |
| Answer» B. Traumatic acid | |
| 12844. |
Sir Archibald is associated with |
| A. | Eugenics |
| B. | Euthenics |
| C. | Genetics |
| D. | Human genetics |
| Answer» E. | |
| 12845. |
The rate of cleavage is inversely proportional to the duration of |
| A. | Anaphase |
| B. | Metaphase |
| C. | Interphase |
| D. | Telophase |
| Answer» D. Telophase | |
| 12846. |
Kangaroo is a member of which order [RPMT 1995; MP PMT 2000] |
| A. | Monotremata |
| B. | Marsupialia |
| C. | Prototheria |
| D. | Insectivora |
| Answer» C. Prototheria | |
| 12847. |
Which one of the following is a refuge for Asiatic lion (Panthera leo persica) [MP PMT 1994] |
| A. | Kanha National Park (M.P.) |
| B. | Corbett National Park (U.P.) |
| C. | Kaziranga National Park (Assam) |
| D. | Gir Forest (Gujarat) |
| Answer» E. | |
| 12848. |
Assertion : The terms precocial and altricial is related with birds. Reason : Precocial and altricial types of development can seen in young birds. |
| 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 | |
| 12849. |
Minerals and metals are [CBSE PMT 1992] |
| A. | Renewable resources |
| B. | Non-renewable resources |
| C. | Renewable and non-renewable resources |
| D. | Biodegradable resources |
| Answer» D. Biodegradable resources | |
| 12850. |
Which one of the following is true moss [BHU 1989] |
| A. | Club moss |
| B. | Reindeer moss |
| C. | Irish moss |
| D. | Bogg moss (Sphagnum) |
| Answer» E. | |