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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.
| 851. |
Gray matter of brain is affected by |
| A. | Measel virus |
| B. | Varicella virus |
| C. | Dengue fever virus |
| D. | Encephalitis virus |
| Answer» E. | |
| 852. |
Read the assertion and reason carefully: Assertion : Thorn like structure present in Pothos and Acanthorhiza are root modifications. Reason : Thorns have endogenous 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» B. If both the assertion and reason are true but the reason is not a correct explanation of the assertion | |
| 853. |
Cycas and Ginkgo are regarded as primitive gymnosperms because: |
| A. | they are lacking cones. |
| B. | they need water for fertilisation. |
| C. | they are living fossils. |
| D. | they have ciliated sperms. |
| Answer» D. they have ciliated sperms. | |
| 854. |
Which of the following statement is not correct regarding connective tissues? |
| A. | They are classified into four types. |
| B. | They are most abundant and widely distributed in the body of animals. |
| C. | They perform the function of linking and supporting the other tissues. |
| D. | They include cartilage, bone, adipose tissue and blood. |
| Answer» B. They are most abundant and widely distributed in the body of animals. | |
| 855. |
Tissue is |
| A. | First level of plant organisation |
| B. | Second level of plant organisation |
| C. | Third level of plant organisation |
| D. | Last level of plant organisation |
| Answer» C. Third level of plant organisation | |
| 856. |
Silk industry is related to [CPMT 1986, 91; MP PMT 2004] |
| A. | Sericulture |
| B. | Apiculture |
| C. | Pisciculture |
| D. | Horticulature |
| Answer» B. Apiculture | |
| 857. |
Plants differ from animals in having [St. Johns MC 2002] |
| A. | Definite lifespan |
| B. | Localized growth |
| C. | Indefinite lifespan |
| D. | Localized growth and indefinite lifespan |
| Answer» C. Indefinite lifespan | |
| 858. |
Most important alga in research centres is [CPMT 1996] |
| A. | Mycoplasma |
| B. | Spirogyra |
| C. | Chlorella |
| D. | Blue-green algae |
| Answer» D. Blue-green algae | |
| 859. |
An obligate root parasite is [BHU 2005] |
| A. | Rafflesia |
| B. | Loranthus |
| C. | Viscum |
| D. | Striga |
| Answer» B. Loranthus | |
| 860. |
Study of human race is called [AFMC 1997; Haryana PMT 2005; MP PMT 2005] |
| A. | Eugenics |
| B. | Entomology |
| C. | Ecology |
| D. | Pathology |
| Answer» B. Entomology | |
| 861. |
Length of Mycobacterium tuberculosis is |
| A. | \[0.8\mu \] |
| B. | \[0.6\mu \] |
| C. | \[1.1\mu \] |
| D. | \[0.7\mu \] |
| Answer» B. \[0.6\mu \] | |
| 862. |
Read the assertion and reason carefully to mark the correct option out of the options given below: Assertion : Heterotrichous filaments are more advanced than branched filaments. Reason : Heterotrichous filaments have prostrate and projecting system. |
| 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 | |
| 863. |
Who coined the term 'tissue' |
| A. | Hooke |
| B. | Grew |
| C. | Nageli |
| D. | Leeuwenhoek |
| Answer» C. Nageli | |
| 864. |
Which one of the following pair is correctly matched? |
| A. | Onion - Bulb |
| B. | Ginger - Sucker |
| C. | Chlamydomonas - Conidia |
| D. | Yeast - Zoospores |
| Answer» B. Ginger - Sucker | |
| 865. |
Which one occurs in greatest proportion |
| A. | Neutrophils |
| B. | Eosinophils |
| C. | Basophils |
| D. | Lymphocytes |
| Answer» B. Eosinophils | |
| 866. |
Lipids are generally |
| A. | A high energy source |
| B. | Hydrophobic |
| C. | Composed of fatty acids |
| D. | All of the above |
| Answer» E. | |
| 867. |
The energy transformation in the nervous system is [Kerala PMT 2002] |
| A. | Chemical to radiant |
| B. | Chemical to electrical |
| C. | Chemical to mechanical |
| D. | Mechanical to radiant |
| Answer» C. Chemical to mechanical | |
| 868. |
The expression of genes for the production of milk in only females is a [AIIMS 1993] |
| A. | X linked character |
| B. | Y linked character |
| C. | Sex limited genes |
| D. | Sex influenced genes |
| Answer» D. Sex influenced genes | |
| 869. |
A women with 47 chromosomes due to three copies of chromosome 21 is characterised by: |
| A. | Superfemaleness |
| B. | Triploidy |
| C. | Turner's syndrome |
| D. | Down's syndrome |
| Answer» E. | |
| 870. |
Which of the following is not a hereditary disease? |
| A. | Cystic fibrosis |
| B. | Thalassemia |
| C. | Haemophilia |
| D. | Cretinism |
| Answer» E. | |
| 871. |
Blue revolution is related to which of the following field? |
| A. | Dairy products |
| B. | Fisheries |
| C. | Egg production |
| D. | Agriculture |
| Answer» C. Egg production | |
| 872. |
Regular inclusion of citrus fruits in one's diet would prevent: |
| A. | scurvy |
| B. | pellagra |
| C. | beri-beri |
| D. | night blindness |
| Answer» B. pellagra | |
| 873. |
Read the assertion and reason carefully: Assertion : Roots contain nodes but no leaves or buds. Reason : Root branches arise endogenously. |
| 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. | |
| 874. |
Assertion : Only red algae are able to flourish at the great depth of sea. Reason : Red algae has the pigments r-phycoerythrin and r-phycocyanin. |
| 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 | |
| 875. |
Study the following statement and choose the correct option(s) from the codes given below. (i) Root pressure provides a light push in the overall process of water transport. (ii) Root pressure causes the flow of water faster through xylem than it can be lost by transportation. (iii) In symplast pathway, water move exclusively through the cell wall and intercellular spaces. (iv) Guttation is a cause of transpiration pull. (v) Most plants fulfill their water requirement by transpiration pull. |
| A. | (i), (ii) and (iii) are correct while iv and v are incorrect. |
| B. | (iv) and (v) are correct while i, ii and iii are incorrect. |
| C. | (i) and (v) are correct |
| D. | (ii) and (iii) are correct while i, iv and v are incorrect. |
| Answer» D. (ii) and (iii) are correct while i, iv and v are incorrect. | |
| 876. |
The most abundant compound in living cells is |
| A. | Carbon |
| B. | Water |
| C. | Hydrogen |
| D. | Oxygen |
| Answer» C. Hydrogen | |
| 877. |
What is the most common type of permanent tissue found in almost all plants |
| A. | Sclerenchyma |
| B. | Collenchyma |
| C. | Parenchyma |
| D. | Xylem |
| Answer» D. Xylem | |
| 878. |
Monocarpellary pistil with unilocular ovary and marginal placentation are found in [CPMT 1980, 82; DPMT 1981, 82] |
| A. | Compositae |
| B. | Leguminosae |
| C. | Cruciferae |
| D. | Solanaceae |
| Answer» C. Cruciferae | |
| 879. |
Viruses multiply |
| A. | In vivo |
| B. | In vitro |
| C. | Both (a) and (b) |
| D. | None of the above |
| Answer» B. In vitro | |
| 880. |
When a membrane is at the resting potential, the concentration of: |
| A. | Sodium and potassium ions is higher on the inside of its membrane. |
| B. | Sodium and potassium ions is higher on the outside of its membrane. |
| C. | Sodium ions is higher on the inside of its membrane and of potassium ions is higher on the outside. |
| D. | Sodium ions is higher on the outside of its membrane and of potassium ions is higher on the inside. |
| Answer» E. | |
| 881. |
Palmella stage is met within: |
| A. | Ulothrix and Sphagnum |
| B. | Oedogonium and Riccia |
| C. | Chlamydomonas |
| D. | Spirogyra and Gnetum |
| Answer» D. Spirogyra and Gnetum | |
| 882. |
Amphiphloic (bicollateral) condition of stele means that [BHU 1979; RPMT 1997; BVP 2003] |
| A. | Phloem is surrounded by xylem |
| B. | Phloem is on both sides of xylem |
| C. | Phloem is internal to xylem |
| D. | Phloem is external to xylem |
| Answer» C. Phloem is internal to xylem | |
| 883. |
Read the assertion and reason carefully to mark the correct option out of the options given below: Assertion : "Drug resistance" is caused due to improper use of antibiotics. Reason : Antibiotics are produced by micro organisms. |
| 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» C. If assertion is true but reason is false. | |
| 884. |
A modified dihybrid mendelian ratio of 9 : 3 : 4 indicates: |
| A. | Supplementary genes |
| B. | Complementary genes |
| C. | Lethal genes |
| D. | Epistatic genes |
| Answer» B. Complementary genes | |
| 885. |
Which is not a stem modification [AFMC 1988] |
| A. | Rhizome of Ginger |
| B. | Corm of Colocasia |
| C. | Pitcher of Nepenthes |
| D. | Tuber of Potato |
| Answer» D. Tuber of Potato | |
| 886. |
Most of the plant viruses are characterized in having [AFMC 1993; DPMT 1993] |
| A. | DNA |
| B. | RNA |
| C. | DNA and RNA |
| D. | Lipids |
| Answer» C. DNA and RNA | |
| 887. |
Read the assertion and reason carefully to mark the correct option out of the options given below: Assertion : Champagnes are wines. Reason : Champagnes are made in France. |
| 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» C. If assertion is true but reason is false. | |
| 888. |
Carbohydrates, the most abundant biomolecules on earth, are produced by [CBSE PMT 2005] |
| A. | Some bacteria, algae and green plant cells |
| B. | Fungi, algae and green plant cells |
| C. | All bacteria, fungi and algae |
| D. | Viruses, fungi and bacteria |
| Answer» E. | |
| 889. |
Offsprings of oviparous animals are at greater risk as compared to off springs of viviparous animals because: |
| A. | Proper embryonic care and protection is lesser. |
| B. | Embryo is not developed. |
| C. | Progenies are with more variation. |
| D. | Progenies are larger. |
| Answer» B. Embryo is not developed. | |
| 890. |
If chicken and eggs cooked properly (above\[100{}^\circ C\]), then the chances of catching bird flu are: |
| A. | Very high |
| B. | High |
| C. | Moderate |
| D. | Nil |
| Answer» E. | |
| 891. |
Which tissue is derived from tunica |
| A. | Epidermis |
| B. | Endodermis |
| C. | Pericycle |
| D. | Vascular tissue |
| Answer» B. Endodermis | |
| 892. |
Zygospore of Spirogyra produces [CBSE PMT 1993] |
| A. | 2 zoospores |
| B. | 4 zoospores |
| C. | 2? 4 zoospores |
| D. | None of the above |
| Answer» E. | |
| 893. |
An axon has four terminal ends connected with dendrites of four different neurons. Its nerve impulse will: |
| A. | Become weak due to distribution into four. |
| B. | Travel in all the four neurons with equal strength. |
| C. | Pass on to one neuron only. |
| D. | Travel to none because the movement of impulse is from dendrite to axon. |
| Answer» C. Pass on to one neuron only. | |
| 894. |
A marriage between normal visioned man and colourblind woman will produce which of the following types of offsprings [BHU 2004] |
| A. | Normal sons and carrier daughters |
| B. | Colourblind sons and carrier daughters |
| C. | Colourblind sons and 50% carrier daughters |
| D. | 50% colourblind sons and 50% carrier daughters |
| Answer» C. Colourblind sons and 50% carrier daughters | |
| 895. |
Match the following figures (given as A, B, C, and E) with their respective names given below as (i), (ii), (iii), (iv) and (v). (i) Tubectomy (ii) Vasectomy (iii) Implants (iv) Condoms (v) Copper-T |
| A. | A - (iv), B - (v), C - (iii), D - (ii), E - (i) |
| B. | A - (iv), B - (iii), C - (ii), D - (i ), E - (v) |
| C. | A - (i), B - (ii), C - (iii), D - (iv), E - (v) |
| D. | A - (iii), B - (iv), C - (v), D - (i), E - (ii) |
| Answer» B. A - (iv), B - (iii), C - (ii), D - (i ), E - (v) | |
| 896. |
Match the column-I with column-II and choose the correct option. Column-I Column-II A. Mutualism I. Tiger and deer B. Commensalism II. Cuscuta on Cissus C. Parasitism III. Sucker fish and shark D. Predation IV. Crab and sea anemone |
| A. | A-I; B-II; C-III; D-IV |
| B. | A-III; B-IV; C-II; D-I |
| C. | A-II; B-III; C-I; D-IV |
| D. | A-IV; B-II; C-III; D-I |
| Answer» C. A-II; B-III; C-I; D-IV | |
| 897. |
Assertion : In leptosporangiate development, sporangia are formed from a group of initials. Reason : Eusporangiate development of sporangia starts from single initial. |
| 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 | |
| 898. |
When dominant and recessive alleles express itself together it is called _______. |
| A. | codominance |
| B. | dominance |
| C. | amphidominace |
| D. | pseudodominance |
| Answer» B. dominance | |
| 899. |
A pea plant with purple flowers is heterozygous for flower colour. Its genotype is Pp. The P and p alleles in the pea plant's cells are located: |
| A. | next to each other on the same chromosome. |
| B. | at the same location on homologous chromosomes. |
| C. | on the X and Y chromosomes. |
| D. | some distance apart on the same chromosome. |
| Answer» C. on the X and Y chromosomes. | |
| 900. |
Consider a gene that has two alleles and shows complete dominance. When two heterozygotes for this gene breed, they have a 25% chance of producing a homozygous recessive offspring. The next time they breed, what are the chances that they will once again have a homozygous recessive progeny? |
| A. | 0% |
| B. | 0.25 |
| C. | 75% |
| D. | 1 |
| Answer» C. 75% | |