MCQOPTIONS
Saved Bookmarks
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.
| 11851. |
Read the assertion and reason carefully to mark the correct option out of the options given below: Assertion : Death is one of the important regulatory process on earth. Reason : It avoids over-crowding caused by continuous reproduction. [AIIMS 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» B. If both the assertion and reason are true but the reason is not a correct explanation of the assertion | |
| 11852. |
Read the assertion and reason carefully to mark the correct option out of the options given below: Assertion : Nerve supply to a cut part is essential for initiation and completion of regeneration. Reason : Nerve secretes epidermal growth factor and neurotrophic factor for regeneration. |
| 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 | |
| 11853. |
An antiviral chemical produced by the animal cell is [MP PMT 1996] |
| A. | Virion |
| B. | Interferon |
| C. | Repressor protein |
| D. | Hormone |
| Answer» C. Repressor protein | |
| 11854. |
Meiosis and mitosis differ from each other because in meiosis [AMU 1991; CPMT 1993] |
| A. | The four nuclei formed are not similar to parental ones |
| B. | Homologous chromosomes pair are exchange parts |
| C. | Number of chromosomes gets halved |
| D. | All the above |
| Answer» E. | |
| 11855. |
Assertion : Lateral line system is found in fishes and aquatic larval amphibians. [AIIMS 2002] Reason : Lateral line system has receptor of sensory cells derived from ectoderm. |
| 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 | |
| 11856. |
Most animals domesticated by man belong to the order [BHU 2002] |
| A. | Carnivora |
| B. | Rodentia |
| C. | Ungulata |
| D. | Lagomorpha |
| Answer» D. Lagomorpha | |
| 11857. |
Grasslands of Asia are [Kerala 2001] |
| A. | Savannah |
| B. | Pampas |
| C. | Steppes |
| D. | Veldt |
| E. | Prairies |
| Answer» D. Veldt | |
| 11858. |
Nobel prize winner for the discovery of method of interpersonal communication in honey bee is [CPMT 1971, 72, 77; BHU 1982;MP PMT 1994, 99] |
| A. | Von Frisch |
| B. | H.G. Khorana |
| C. | Harvey |
| D. | Darwin |
| Answer» B. H.G. Khorana | |
| 11859. |
Which one of the following is a flightless bird [AIIMS 2001,MHCET 2003] |
| A. | Passer |
| B. | Corvus |
| C. | Aptenodytes |
| D. | Pavo cristatus |
| Answer» D. Pavo cristatus | |
| 11860. |
Read the assertion and reason carefully: Assertion : Achenial fruits are single seeded fruits. Reason : Capsular fruits are multiseeded fruits. |
| 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 | |
| 11861. |
Nitrogen cycle involves bacteria capable of changing proteins to ammonia called as |
| A. | Bacteria of decay |
| B. | Denitrifying bacteria |
| C. | Nitrogen fixing bacteria |
| D. | Ammonifying bacteria |
| Answer» B. Denitrifying bacteria | |
| 11862. |
Read the assertion and reason carefully: Assertion : Prickles of plant have a single role of protection of plant. Reason : They are superficial in origin. |
| 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. | |
| 11863. |
In mammals egg are microlecithal and isolecithal because these are [RPMT 2001] |
| A. | Oviparous |
| B. | Viviparous |
| C. | Ovoviviparous |
| D. | None of these |
| Answer» C. Ovoviviparous | |
| 11864. |
Match List I and List II and select the correct answer using the code given below in the lists : List I List II (Phase of meiosis) (Event that occurs) 1. Prophase I Crossing over occurs 2. Metaphase I Sister chromatids migrate to opposite poles 3. Anaphase I Homologous line up at equator in pairs Code: [MP PMT 1993] |
| A. | 1, 2 and 3 are correct |
| B. | 1 and 2 are correct, 3 is false |
| C. | 1 is correct, 2 and 3 are false |
| D. | 1 and 3 are correct, 2 is false |
| Answer» D. 1 and 3 are correct, 2 is false | |
| 11865. |
Viral diseases of animals include |
| A. | Cephalitis, blue tongue, foot and mouth disease |
| B. | Blue tongue, foot and mouth disease, rinderpest, rabbies |
| C. | Blue tongue, rinderpest, cephalitis, rabbies |
| D. | None of these |
| Answer» C. Blue tongue, rinderpest, cephalitis, rabbies | |
| 11866. |
Proteins consist of [CPMT 1992] |
| A. | Carbon, hydrogen, chlorine, sulphur |
| B. | Carbon, hydrogen, oxygen, nitrogen |
| C. | Carbon, manganese, phosphorus, nitrogen |
| D. | Carbon, iodine, oxygen and inorganic phosphate |
| Answer» C. Carbon, manganese, phosphorus, nitrogen | |
| 11867. |
Hippopotamus is found in |
| A. | America |
| B. | Africa |
| C. | Asia |
| D. | Australia |
| Answer» C. Asia | |
| 11868. |
The fish Wallago is commonly called as 'fresh water shark', because it is |
| A. | Cartilaginous |
| B. | Dangerously predatory |
| C. | Lives in sea |
| D. | Resembles shark in body form |
| Answer» E. | |
| 11869. |
Vegetative reproduction by layering is found in [AFMC 1996] |
| A. | Jasmine |
| B. | Mango |
| C. | Rose |
| D. | All of these |
| Answer» B. Mango | |
| 11870. |
A filament of an alga can be differentiated from that of a fungus by |
| A. | Cells are uninucleate in algae whereas they are multinucleate in fungi |
| B. | Chlorophyll present in algae and absent in fungi |
| C. | The presence of cellulose cell wall and chlorophyllous cells in algae while chitinous cell wall and non-chlorophyllous cells in fungi |
| D. | The algae are green and fungi are non-green |
| Answer» D. The algae are green and fungi are non-green | |
| 11871. |
Assertion : Extracellular materials are important for cells. Reason : Intercellular materials surround the cells & bind them together. |
| 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 | |
| 11872. |
Assertion : The modern horse evolved during pliocene epoch. Reason : It arose from Pliohippus. |
| 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. | |
| 11873. |
Assertion : In Balanoglossus notochord is replaced by pygochord. Reason : Pygochord supports adbominal region. |
| 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 | |
| 11874. |
Assertion : Muscle cells are also called myofibrils. Reason : Muscle cells are very thin and elongated. |
| 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. | |
| 11875. |
Species listed in Red Data Book are [Orissa 2004] |
| A. | Vulnerable |
| B. | Threatened |
| C. | Endangered |
| D. | All the above |
| Answer» E. | |
| 11876. |
Assertion : Prokaryotic chromosome differs from a eukaryotic one by the absence of histone proteins. Reason : Bacterial cell is prokaryote. |
| 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 | |
| 11877. |
'Cell' was discovered by and given the term [AFMC 1997; CPMT 2003] |
| A. | Grew |
| B. | Brown |
| C. | Robert Hooke |
| D. | Darwin |
| Answer» D. Darwin | |
| 11878. |
Forests take part is [CPMT 1994] |
| A. | Control of atmospheric pollution |
| B. | Prevention of soil erosion |
| C. | Maintenance of natural balance |
| D. | All the above |
| Answer» E. | |
| 11879. |
Assertion : Endostyle is present at the pharyngeal groove of the midventral wall of the pharynx of Amphioxus. Reason : Endostyle has an important role in respiration. |
| 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 | |
| 11880. |
Which of the following is free living aerobic and non-photosynthetic nitrogen fixing bacterium [CBSE PMT 1997, 1998] |
| A. | Rhizobium |
| B. | Nostoc |
| C. | Azospirillum |
| D. | Azotobacter |
| Answer» E. | |
| 11881. |
Assertion : Pinus shows formation of annual rings. Reason : Pinus grows in area of environmental fluctuation. |
| 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 | |
| 11882. |
Gametophytic generation is dominant in [CBSE PMT 1993; RPMT 1995; CPMT 1998; Pb. PMT 2000; KCET 2001; Orissa JEE 2005] |
| A. | Pteridophyta |
| B. | Bryophyta |
| C. | Angiosperms |
| D. | Gymnosperms |
| Answer» C. Angiosperms | |
| 11883. |
Cells obtained from cancerous tumours are known as [AIIMS 1985] |
| A. | Hybridomas |
| B. | Myelomas |
| C. | Lymphocyte |
| D. | Monoclonal cells |
| Answer» C. Lymphocyte | |
| 11884. |
Haustoria are found in [NCERT 1978] |
| A. | Symbionts |
| B. | Parasites |
| C. | Saprophytes |
| D. | All the above |
| Answer» C. Saprophytes | |
| 11885. |
Respective haploid and monoploid number of chromosomes of Hexaploid wheat are [CPMT 2005] |
| A. | 21 and 42 |
| B. | 7 and 21 |
| C. | 21 and 7 |
| D. | 42 and 21 |
| Answer» D. 42 and 21 | |
| 11886. |
Random and controlled breeding are included in the |
| A. | Scientific method of breeding |
| B. | Natural method of breeding |
| C. | Both a and b |
| D. | Cultural method of breeding |
| Answer» C. Both a and b | |
| 11887. |
Piper betle is the botanical name of |
| A. | Pan |
| B. | Tulsi |
| C. | Kali mirch |
| D. | Long |
| Answer» B. Tulsi | |
| 11888. |
Which of the following can use molecular nitrogen as nutrient [MP PMT 1998] |
| A. | Methanomonas |
| B. | Mucor |
| C. | Rhizobium |
| D. | Spirogyra |
| Answer» D. Spirogyra | |
| 11889. |
Non-renewable source is [RPMT 1995] |
| A. | Water and gas |
| B. | Plant and coke |
| C. | Coke and mineral substances |
| D. | Energy and water |
| Answer» D. Energy and water | |
| 11890. |
Which one of the following true [MP PMT 2005] |
| A. | One gene one protein |
| B. | One gene one polypeptide |
| C. | One gene many polypeptide |
| D. | All of the above |
| Answer» C. One gene many polypeptide | |
| 11891. |
What is interferon |
| A. | A type of plasmid |
| B. | A type of protein |
| C. | A type of gene |
| D. | A type of hormone |
| Answer» C. A type of gene | |
| 11892. |
In developing countries, the heaviest demand on forests is for [BHU 1996] |
| A. | Fuel wood |
| B. | Furniture wood |
| C. | Fruits |
| D. | None of these |
| Answer» B. Furniture wood | |
| 11893. |
Silent Valley having rare plants and animals is located is [BHU 1981] |
| A. | Kerala |
| B. | Karnataka |
| C. | Jammu and Kashmir |
| D. | Andhra Pradesh |
| Answer» B. Karnataka | |
| 11894. |
In seeds, digestion is made possible at relatively low temperature by [CPMT 1984] |
| A. | Proteins |
| B. | Enzymes |
| C. | Auxins |
| D. | Nitrogenous complex substances |
| Answer» C. Auxins | |
| 11895. |
If the Bengal tiger becomes extinct [AIIMS 2004] |
| A. | Hyenas and wolves will become scarce |
| B. | The wild area will be safe for man and domestic animals |
| C. | Its gene pool will be lost for ever |
| D. | The population of beautiful animals like deers will get stablized. |
| Answer» C. Its gene pool will be lost for ever | |
| 11896. |
Which of the following ion is pulled out in apoplast by the auxin during growh [CPMT 1999] |
| A. | \[N{{a}^{+}}\] |
| B. | \[{{K}^{+}}\] |
| C. | \[M{{g}^{2+}}\] |
| D. | \[{{H}^{+}}\] |
| Answer» C. \[M{{g}^{2+}}\] | |
| 11897. |
The stimuli through which a dancing scout bee communicates the location of a food source to other worker bees in a hive are [CPMT 1982, 93] |
| A. | Visual |
| B. | Acoustic |
| C. | Contact |
| D. | Contact and visual |
| Answer» E. | |
| 11898. |
The somatic chromosome complement in all human being is [CPMT 1977, 79] |
| A. | 21 pairs of autosomes and one pair heterosomes |
| B. | 23 pairs of autosomes and one pair of heterosomes |
| C. | 22 pairs of autosomes and one pair of heterosomes |
| D. | 22 pairs of autosomes and one pair of XY chromosomes |
| Answer» D. 22 pairs of autosomes and one pair of XY chromosomes | |
| 11899. |
Which character is not same in aves and mammals [RPMT 2002] |
| A. | Single systemic arch |
| B. | Metanephric kidney |
| C. | Seven cervical vertebrae |
| D. | Homoiotherms |
| Answer» D. Homoiotherms | |
| 11900. |
Sexual reproduction in algae results in the formation of [DPMT 2003; BVP 2004] |
| A. | Oospore |
| B. | Zoospore |
| C. | Zygote |
| D. | Zygospore |
| Answer» E. | |