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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.
| 51. |
Xenogamy is also known as: |
| A. | Autogamy |
| B. | Cross pollination |
| C. | Self-pollination |
| D. | Cleistogamy |
| Answer» C. Self-pollination | |
| 52. |
Wind pollinated flowers have: |
| A. | Small petals and sticky pollen. |
| B. | No petals and light pollen. |
| C. | Coloured and large petals with large pollen. |
| D. | Small petals and heavy pollen. |
| Answer» C. Coloured and large petals with large pollen. | |
| 53. |
Indian telegraph plant (Desmodium gyrans) belongs to [RPMT 1988] |
| A. | Malvaceae |
| B. | Leguminosae |
| C. | Solanaceae |
| D. | Liliaceae |
| Answer» C. Solanaceae | |
| 54. |
Which of the following statements about bee colony is incorrect? |
| A. | Domesticated species are Apis indica and A mellifera. |
| B. | Sex differentiation is due to haplodiploidy. |
| C. | They are female dominant societies. |
| D. | Fertilised eggs develop into sterile females only. |
| Answer» E. | |
| 55. |
The process, by which transfer of zygote or earl embryo (up to 8 blastomeres) into fallopian tube takes places, is called ______. |
| A. | IVF and ET |
| B. | ZIFT |
| C. | GIFT |
| D. | IUT |
| Answer» C. GIFT | |
| 56. |
Which of the following statements regarding the asexual reproduction is incorrect? |
| A. | Both mitotic and meiotic division occurs. |
| B. | It does not contribute to evolution and speciation. |
| C. | It is uniparental and usually occurs in unicellular organisms. |
| D. | There is no variation and the off springs have the same phenotype and genotype. |
| Answer» B. It does not contribute to evolution and speciation. | |
| 57. |
Which of the following possesses nodes of Ranvier? |
| A. | Medullated nerve fibre |
| B. | Non-medullated nerve fibre |
| C. | Muscle fibre |
| D. | Medullated and non-medullated nerve fibres |
| Answer» B. Non-medullated nerve fibre | |
| 58. |
The figure below is related with mouth parts of cockroach. Identify A to E. |
| A. | A-Maxilla, B-Hypopharynx, C-Labium, D-Mandible, E-Labrum |
| B. | A-Mandible, B-Labium, C-Maxilla, D-Labrum, E-Hypopharynx |
| C. | A- Labrum, B-Mandible, C-Hypopharynx, D-Maxilla, E-Labium |
| D. | A- Labium, B-Hypopharynx, C-Labrum, D-Maxilla, E-Mandible |
| Answer» D. A- Labium, B-Hypopharynx, C-Labrum, D-Maxilla, E-Mandible | |
| 59. |
Read the assertion and reason carefully: Assertion : Endosperm is a nutritive tissue and it is triploid. Reason : Endosperm is formed by fusion of secondary nucleus to second male gamete. It is used by developing embryo. [AIIMS 1998] |
| 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 | |
| 60. |
Which is not a reflex action? |
| A. | Swallowing of food |
| B. | Shivering in cold |
| C. | Salivation at choicest food |
| D. | Closure of eyelid by flashing light |
| Answer» C. Salivation at choicest food | |
| 61. |
Trochlear nerve supplies: |
| A. | Nasal epithelium |
| B. | Superior oblique eye muscles |
| C. | Inferior oblique eye muscle |
| D. | Superior rectus eye muscle. |
| Answer» C. Inferior oblique eye muscle | |
| 62. |
A thin vascular membrane of brain is: |
| A. | Arachnoid |
| B. | Piameter |
| C. | Durameter |
| D. | Epineurium |
| Answer» C. Durameter | |
| 63. |
The total number of progeny obtained through dihybrid cross of Mendel is 1280 in \[{{F}_{2}}\] generation. How many of them are recombinants? |
| A. | 240 |
| B. | 360 |
| C. | 480 |
| D. | 720 |
| Answer» D. 720 | |
| 64. |
Human skin colour is the example of: (i) Multiple gene inheritance. (ii) Three separate genes control this trait. 3 (iii) Single gene controls this trait. (iv) Two genes control this trait. (v) A significant role played by environment Which of the following statements are correct |
| A. | (i), (ii) and (iii) |
| B. | (i),(ii) and (v) |
| C. | (iii), (iv) and (v) |
| D. | (ii),(iii) and (iv) |
| Answer» C. (iii), (iv) and (v) | |
| 65. |
Improvement of genetic characters and present day generation on the basis of best nutrition and training is called [MP PMT 1995] |
| A. | Eugenics |
| B. | Euphanics |
| C. | Euthenics |
| D. | Gerontology |
| Answer» D. Gerontology | |
| 66. |
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 | |
| 67. |
Roses and banana are usually propagate through |
| A. | Parthenocarpy |
| B. | Cutting |
| C. | Grafting |
| D. | Layering |
| Answer» C. Grafting | |
| 68. |
Match the items in column I with those in column II: Column I (Vitamin) Column II (Deficiency disease) (i) K (a) Beri-beri (ii) D (b) Haemorrhagic disease of new born (iii) \[{{B}_{1}}\] (c) Night blindness (iv) A (d) Rickets Which one of the following is the correct matching of all the four vitamins? |
| A. | i = c, ii = b, iii = d, iv = a |
| B. | i = a, ii = b, iii = d, iv = c |
| C. | i = b, ii = d, iii = a, iv = c |
| D. | i = c, ii = d, iii = a, iv = b |
| Answer» D. i = c, ii = d, iii = a, iv = b | |
| 69. |
Read the assertion and reason carefully to mark the correct option out of the options given below: Assertion : Hypnotic drugs induce sleep. Reason : Central nervous system is sensitive to hypnotic drugs. |
| 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. | |
| 70. |
'Z-scheme' show the transfer of electrons involving: |
| A. | Bundle sheath cell |
| B. | PSI |
| C. | PSII |
| D. | Both [b] and [c] |
| Answer» E. | |
| 71. |
Read the assertion and reason carefully: Assertion : Deep feeder tap root system is called cymose tap root system. Reason : Deep feeder root system is found in trees. |
| 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. | |
| 72. |
What does the shape of the given age pyramids (A to C) reflect about the growth status of populations? |
| A. | 123DecliningStableExpanding |
| B. | StableExpandingDeclining |
| C. | ExpandingStableDeclining |
| D. | DecliningExpandingStable |
| Answer» D. DecliningExpandingStable | |
| 73. |
Which of the following statements) is/are incorrect? (i) Light is essential for life to exist on the earth. (ii) Many species of small plant under the canopy to tall trees in forest show optimal use of available light due to having large sized antenna and higher number of thylakoids. (iii) UV-rays is not harmful for many organisms. (iv) Photoperiodic requirement is not essential for many plant for flowering. (v) Red algae can live in deeper water of sea because of having pigment, phycoerythrin. |
| A. | Only (i) |
| B. | Only (ii) |
| C. | Only (iii) |
| D. | (iv) and (v) |
| Answer» D. (iv) and (v) | |
| 74. |
The given, examples are associated with which type of adaptation? (i) Basking by desert lizards in sun. (ii) Hiding in burrows by some animals. (iii) Wearing of woollen clothes. (iv) Thermal gaping |
| A. | Scansorial adaptation |
| B. | Cursorial adaptation |
| C. | Biochemical adaptation |
| D. | Behavioural adaptation |
| Answer» E. | |
| 75. |
Animal which remains male initially, then changes to female (Tapeworm proglottides) is called [CBSE PMT 1993] |
| A. | Protandrous |
| B. | Apomixis |
| C. | Profixation |
| D. | None of these |
| Answer» B. Apomixis | |
| 76. |
Thiobacillus ferrodoxin liberate energy by oxidizing |
| A. | \[F{{e}^{++}}\] to \[F{{e}^{+++}}\] |
| B. | \[C{{u}^{+}}\] to \[C{{u}^{++}}\] |
| C. | \[F{{e}^{+++}}\] to \[F{{e}^{++}}\] |
| D. | None of the above |
| Answer» B. \[C{{u}^{+}}\] to \[C{{u}^{++}}\] | |
| 77. |
Plant tissues, which are actively growing have water content of [DPMT 1991] |
| A. | 40 - 50% |
| B. | 65 - 75% |
| C. | 20 - 40% |
| D. | 85 - 95% |
| Answer» E. | |
| 78. |
is floral formula of [CBSE PMT 1993] |
| A. | Allium cepa |
| B. | Solanum nigrum |
| C. | Helianthus annuus |
| D. | Brassica nigra |
| Answer» E. | |
| 79. |
During the formation of bread, it becomes porous due to release of \[C{{O}_{2}}\] by the action of: |
| A. | Yeast |
| B. | Bacterial |
| C. | Virus |
| D. | Protozoans |
| Answer» B. Bacterial | |
| 80. |
Assertion : Angiosperms are mostly terrestrial. Reason : Angiosperms are found in plains only. |
| 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 | |
| 81. |
Which among the following is the strongest cartilage [CPMT 2000, 03; BHU 2003] |
| A. | Hyaline cartilage |
| B. | Elastic cartilage |
| C. | White fibro cartilage |
| D. | Violet fibro cartilage |
| Answer» D. Violet fibro cartilage | |
| 82. |
\[1nm\]is equal to [CPMT 1999; JIPMER 2001] |
| A. | \[10{\AA}\] |
| B. | \[{{10}^{-3}}\,\,mm\] |
| C. | \[{{10}^{-8}}m\] |
| D. | \[100\mu m\] |
| Answer» B. \[{{10}^{-3}}\,\,mm\] | |
| 83. |
Stem is enlarged in [CPMT 1982] |
| A. | Rhizome |
| B. | Corm |
| C. | Bulb |
| D. | Tuber |
| Answer» C. Bulb | |
| 84. |
Vegetative reproduction in green algae occurs by: |
| A. | Conidia |
| B. | Fragmentation |
| C. | Different types of spores |
| D. | Both [b] and [c] |
| Answer» E. | |
| 85. |
One way of detecting sex linked inheritance is [CPMT 1973] |
| A. | Son resembles mother and daughter resembles father |
| B. | Son resembles father and daughter resembles mother |
| C. | Both son and daughter resemble father |
| D. | Both son and daughter resemble mother |
| Answer» B. Son resembles father and daughter resembles mother | |
| 86. |
Botanical name of Finger Millet is [BHU 1989] |
| A. | Sorghum vulgare |
| B. | Eleusine coracana |
| C. | Amaranthus viridis |
| D. | Pennisetum typhoides |
| Answer» C. Amaranthus viridis | |
| 87. |
The colour of rose petals is due to water soluble pigments present in the [MP PMT 1994] |
| A. | Cytoplasm |
| B. | Nucleus |
| C. | Intercellular spaces |
| D. | Vacuoles |
| Answer» C. Intercellular spaces | |
| 88. |
Assertion : The fungi are widespread in distribution and they even live on inside other plants and animals. Reason : Fungi are able to grow anywhere on land, water or on other organisms because they have a variety of pigments, including chlorophyll, carotenoids, fucooxanthin and phycoerythrin. [AIIMS 2005] |
| 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 | |
| 89. |
How many type of cells constitute a simple permanent tissue |
| A. | One |
| B. | Two |
| C. | Three |
| D. | More |
| Answer» B. Two | |
| 90. |
Major constituent of bone is [CPMT 1975; BHU 1985; RPMT 1999] |
| A. | Calcium phosphate |
| B. | Magnesium phosphate |
| C. | Calcium carbonate |
| D. | Sodium chloride |
| Answer» B. Magnesium phosphate | |
| 91. |
Which structure of Spirogyra is flagellated |
| A. | Physiologically different male gametes |
| B. | Physiologically different female gametes |
| C. | Zygospore |
| D. | None of the above |
| Answer» E. | |
| 92. |
The total solar energy converted to biomass on earth amounts [Assam CEE 2001] |
| A. | 2% |
| B. | 0.2% |
| C. | 0.02% |
| D. | 20% |
| Answer» C. 0.02% | |
| 93. |
The dwarf varieties of wheat brought from Mexico into India were |
| A. | Sonora-64 and Sonalika |
| B. | Sonora-64 and Lerma Rojo-64 |
| C. | Sharbati Sonora and Pusa Lerma |
| D. | Sonalika |
| Answer» C. Sharbati Sonora and Pusa Lerma | |
| 94. |
Generative cell was destroyed by laser but a normal pollen tube was still formed because: |
| A. | Vegetative cell is not damaged. |
| B. | Contents of killed generative cell stimulate pollen growth. |
| C. | Laser beam stimulates growth of pollen tube. |
| D. | The region of emergence of pollen tube is not harmed. |
| Answer» B. Contents of killed generative cell stimulate pollen growth. | |
| 95. |
Study the pedigree chart given below. What does it show? |
| A. | This pedigree chart is wrong as this is not possible. |
| B. | Inheritance of a recessive sex-linked disease like haemophilia. |
| C. | Inheritance of a sex-linked inborn error of metabolism like phenylketonuria. |
| D. | Inheritance of a condition like phenylketonouria as an autosomal recessive trait. |
| Answer» E. | |
| 96. |
Match column-I with column-II and select the correct option from the codes given below. Column-I Column-II A. Autosomal recessive trait I. Down?s syndrome B. Sex-linked recessive trait II. Phenylketonuria C. Metabolic error linked to autosomal recessive trait III. Haemophilia D. Additional 21st chromosome IV. Sickle cell anaemia |
| A. | A-II; B-I; C-IV; D-III |
| B. | A-IV; B-I; C-II; D-III |
| C. | A-IV; B-III; C-II; D-I |
| D. | A-III; B-IV; C-I; D-II |
| Answer» D. A-III; B-IV; C-I; D-II | |
| 97. |
According to the law of independent assortment, in a dihybrid cross: |
| A. | There are four genotypes in \[{{F}_{2}}\] |
| B. | \[{{F}_{2}}\] contains 16 phenotypes. |
| C. | there is a single individual which is homozygous recessive for both the characters. |
| D. | it is not possible to forecast the different phenotypes. |
| Answer» D. it is not possible to forecast the different phenotypes. | |
| 98. |
Soil around stem of potato plant is constantly removed from very young stage so that only roots remain in the soil. Potato tubers in plant will be: |
| A. | Larger |
| B. | Smaller |
| C. | Formed normally |
| D. | not formed |
| Answer» E. | |
| 99. |
Banana fruits are seedless, because: |
| A. | Auxins are sprayed for rapid development of fruit. |
| B. | Vegetative propagation of plant. |
| C. | They are triploid plants. |
| D. | Fruits are artificially ripened. |
| Answer» D. Fruits are artificially ripened. | |
| 100. |
Companion cells in plants are associated with [AIIMS 2004] |
| A. | Vessels |
| B. | Sperms |
| C. | Sieve elements |
| D. | Guard cells |
| Answer» D. Guard cells | |