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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.
| 11301. |
Which of the following propagates through leaf-tip [CBSE PMT 2004] |
| A. | Marchantia |
| B. | Moss |
| C. | Walking fern |
| D. | Sprout-leaf plant |
| Answer» D. Sprout-leaf plant | |
| 11302. |
Genetic diversity is related to |
| A. | Types of species within a community |
| B. | Types of communities in an area |
| C. | Gene based diversity |
| D. | Diversity and evolution of species with a genus |
| Answer» D. Diversity and evolution of species with a genus | |
| 11303. |
Meroblastic cleavage is [MP PMT 1997; MH CET 2002] |
| A. | Partial cleavage |
| B. | Spiral cleavage |
| C. | Equal cleavage |
| D. | Complete cleavage |
| Answer» B. Spiral cleavage | |
| 11304. |
In between two nucleosomes, how many nucleotide pairs are present |
| A. | 5 to 15 |
| B. | 15 to 100 |
| C. | 100 to 200 |
| D. | 200 to 400 |
| Answer» C. 100 to 200 | |
| 11305. |
Assertion : Repression occurs at transcription level. Reason : When repressor binds to the operator, transcription occurs. |
| 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 | |
| 11306. |
Honey bee after discovering the new source of nectar/honey can convey this information but [CPMT 1982] |
| A. | Cannot convey the direction |
| B. | Can convey the direction by round or tail wagging dance |
| C. | Can convey the direction by round dance only |
| D. | Can convey the direction by tail wagging dance only |
| Answer» E. | |
| 11307. |
Herbicticide derived from urea is |
| A. | Simazine |
| B. | Atrazine |
| C. | Unerin |
| D. | a and b both |
| Answer» E. | |
| 11308. |
Triticum monococcum is [DPMT 2004] |
| A. | Diploid |
| B. | Triploid |
| C. | Tetraploid |
| D. | Hexaploid |
| Answer» B. Triploid | |
| 11309. |
What would you call the study of fishes [CPMT 1972, Bihar MDAT 1995, KCET 1999] |
| A. | Ichthyology |
| B. | Herpetology |
| C. | Saurology |
| D. | Ornithology |
| Answer» B. Herpetology | |
| 11310. |
Assertion : Human ancestors never used their tails and so the tails expressing gene has disappeared in them. Reason : Lamarck?s theory of evolution is popularly called theory continuity of germ plasm. [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» E. If the assertion is false but reason is true | |
| 11311. |
The pesticides used in killing the acquatic pests (including insects) is |
| A. | DDT |
| B. | BHC |
| C. | Kerosene oil only |
| D. | Kerosene crude oil |
| Answer» D. Kerosene crude oil | |
| 11312. |
Immune system of the body is impaired in old age which |
| A. | Decreases memory |
| B. | Makes skin loose and wrinkled |
| C. | Increases chances of infection |
| D. | Decreases chances of infection |
| Answer» D. Decreases chances of infection | |
| 11313. |
Recombination of genes occur at [J & K CET 2002] |
| A. | Prophase in mitosis |
| B. | Prophase I in meiosis |
| C. | Prophase II in meiosis |
| D. | Metaphase II in meiosis |
| Answer» C. Prophase II in meiosis | |
| 11314. |
Archesporium is |
| A. | A diploid tissue responsible for the formation of sporogenous tissue |
| B. | A part of archegonia |
| C. | A haploid tissue responsible for the formation of gametophytic cells |
| D. | None of the above |
| Answer» B. A part of archegonia | |
| 11315. |
The branch which deals with the study of cell structure and function is known as [CPMT 1986; BHU 2000; MHCET 2000, 03; Pb. PMT 2004] |
| A. | Histology |
| B. | Ecology |
| C. | Morphology |
| D. | Cytology |
| Answer» E. | |
| 11316. |
The term bryophyta was given by [Pb. PMT 2000] |
| A. | Darwin |
| B. | Braun |
| C. | Aristotle |
| D. | Galen |
| Answer» C. Aristotle | |
| 11317. |
The most common cancer in men in India is |
| A. | Lung cancer |
| B. | Throat cancer |
| C. | Mouth-throat cancer |
| D. | None of these |
| Answer» B. Throat cancer | |
| 11318. |
Which of the following plants are used as green manure in crop fields and in sandy soils [CBSE PMT 2003] |
| A. | Dicanthium annulatum and Azolla pinnata |
| B. | Crotalaria junecea and Alhagi camelorum |
| C. | Calotropis procera and Pitylanthus niruri |
| D. | Saccharum munja and Lantana camara |
| Answer» C. Calotropis procera and Pitylanthus niruri | |
| 11319. |
Read the assertion and reason carefully: Assertion : Bulliform cells are useful in the unrolling of leaf. Reason : Bulliform leaves store water. |
| 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 | |
| 11320. |
In plants auxin synthesis occurs in [MP PMT 1994; CPMT 1999; KCET 2000] |
| A. | Cortex |
| B. | Phloem cells |
| C. | Root and shoot tips |
| D. | Xylem cells |
| Answer» D. Xylem cells | |
| 11321. |
Read the assertion and reason carefully to mark the correct option out of the options given below: Assertion : In cirrhosis, liver cells are affected. Reason : The liver shrinks in size. |
| 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. | |
| 11322. |
Khaziranga wild life sanctuary is located in [BHU 2002] |
| A. | Uttar Pradesh |
| B. | Gujarat |
| C. | Jammu and Kashmir |
| D. | Assam |
| Answer» E. | |
| 11323. |
During cell division chromosome attaches with spindles [Manipal 2005] |
| A. | Kinetochore |
| B. | Centrosome |
| C. | Centriole |
| D. | Secondary constriction |
| Answer» B. Centrosome | |
| 11324. |
Neck is absent in frog. This helps frog in [BHU 1982] |
| A. | Catching prey |
| B. | Respiration |
| C. | Swimming in water |
| D. | Jumping on ground |
| Answer» E. | |
| 11325. |
Read the assertion and reason carefully to mark the correct option out of the options given below: Assertion : In organ transplantation, donor and recipient should be genetically as close as possible. Reason : In immunosuppression, immune system rejects the transplanted organ. |
| 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 | |
| 11326. |
When the tail is cylindrical and ventral scales do not extend the entire width of the belly, the snake is [BHU 1994] |
| A. | Non-poisonous |
| B. | Either poisonous or non-poisonous |
| C. | Definitely poisonous |
| D. | Deadly poisonous |
| Answer» B. Either poisonous or non-poisonous | |
| 11327. |
Antibiotics are produced by [MDAT Bihar 1995] |
| A. | Mucor |
| B. | Penicillium |
| C. | Agaricus |
| D. | All of these |
| Answer» C. Agaricus | |
| 11328. |
Assertion : Bryophytes possess archegonium as a female sex organ. Reason : Algae also possess the archegonium. |
| 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 | |
| 11329. |
The Bacillus haemophilus influenza causes [DPMT 1992] |
| A. | Influenza |
| B. | Pneumonia |
| C. | A form meningitis |
| D. | Whooping cough |
| Answer» B. Pneumonia | |
| 11330. |
As there occurs more and more condensation of chromatin during cell division, there occurs |
| A. | Increase in heterochromatin |
| B. | Increase in euchromatin |
| C. | Differentiation of heterochromatin and euchromatin decreases |
| D. | Differentiation of heterochromatin and euchromatin increases |
| Answer» D. Differentiation of heterochromatin and euchromatin increases | |
| 11331. |
Nitrogen content of biosphere remains constant due to [AFMC 2001] |
| A. | Nitrogen fixation |
| B. | Nitrogen cycle |
| C. | Industrial pollution |
| D. | Absorption of nitrogen |
| Answer» C. Industrial pollution | |
| 11332. |
The yellow-coloured milk secreted by cattle soon after the birth of a calf is called [KCET 2004] |
| A. | Chyme |
| B. | Chyle |
| C. | Cholesterol |
| D. | Colostrum |
| Answer» E. | |
| 11333. |
Assertion : Pili are motile appendages of bacteria. Reason : Pili participate in conjugation. |
| 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. | |
| 11334. |
Cancer is related to [DPMT 1984; MP PMT 1996] |
| A. | Uncontrolled growth of tissues |
| B. | Non-malignant tumor |
| C. | Controlled division of tissues |
| D. | None of these |
| Answer» B. Non-malignant tumor | |
| 11335. |
The terminal end of a chromosome is called [CPMT 1978] |
| A. | Centromere |
| B. | Chromomere |
| C. | Telomere |
| D. | Metamere |
| Answer» D. Metamere | |
| 11336. |
Crenation is the |
| A. | Expansion of a cell |
| B. | Contraction of a cell |
| C. | Increase in cytoplasm |
| D. | None of these |
| Answer» C. Increase in cytoplasm | |
| 11337. |
Who called birds are glorified reptiles [BVP 2001] |
| A. | Huxley |
| B. | Romer |
| C. | Mendel |
| D. | Robert Hooke |
| Answer» B. Romer | |
| 11338. |
The class of phylum chordata to which bat belongs |
| A. | Mammalia |
| B. | Reptilia |
| C. | Aves |
| D. | Amphibia |
| Answer» B. Reptilia | |
| 11339. |
In chlamydomonas the meiosis occurs in [J&K CET 2005] |
| A. | Gamete |
| B. | Zygote |
| C. | Sporogonium |
| D. | Zoospore |
| Answer» C. Sporogonium | |
| 11340. |
Complex inflorescence of which plant is used as food [RPMT 1995] |
| A. | Rhaphanus sativus |
| B. | Brassica repa |
| C. | Brassica olirecia |
| D. | Mustard |
| Answer» D. Mustard | |
| 11341. |
LPG cooking gas is |
| A. | Low price gas |
| B. | Low pressure gas |
| C. | Biogas |
| D. | Fossil fuel |
| Answer» E. | |
| 11342. |
Nitrate reductase enzyme is responsible for the formation of [BHU 1983; DPMT 1985] |
| A. | \[{{N}_{2}}\] |
| B. | \[N{{O}_{2}}\] |
| C. | \[N{{O}_{3}}\] |
| D. | Ammonia |
| Answer» C. \[N{{O}_{3}}\] | |
| 11343. |
Rainfall is absent but precipitation occurs in |
| A. | Arctic desert |
| B. | Tropical desert |
| C. | Chapparal |
| D. | Savannah |
| Answer» B. Tropical desert | |
| 11344. |
Assertion : In ainmals, carbohydrates are mostly translocated as sucrose. Reason : In plants, excess of sugar is stored as starch. |
| 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. | |
| 11345. |
Assetion : Mutations cause evolution. Reason : Ancon sheep and hormless cattle are developed by inducing mutation. |
| 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 | |
| 11346. |
Cleavage in bird's egg is |
| A. | Equal and holoblastic |
| B. | Unequal and holoblastic |
| C. | Discoidal meroblastic |
| D. | Superficial meroblastic |
| Answer» D. Superficial meroblastic | |
| 11347. |
Assertion : Spontaneous mutations occur without any mutagenic agent. Reason : Induced mutations are caused by mutagenic agents. |
| 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. | |
| 11348. |
Starch is stored in potato tuber because sugar is [CPMT 2000] |
| A. | Synthesized in the leaf |
| B. | Changed to starch in tuber |
| C. | Synthesized in the tuber |
| D. | Transported from leaf to tuber |
| Answer» C. Synthesized in the tuber | |
| 11349. |
A normal metaphase chromosome with a midial centromere is [MP PMT 1994; Kerala CET 2005] |
| A. | Metacentric |
| B. | Sub-metacentric |
| C. | Acrocentric |
| D. | Telocentric |
| Answer» B. Sub-metacentric | |
| 11350. |
In humans chromosomal condition of male is [JIPMER 2002] |
| A. | 44 AA + XO |
| B. | 44 AA + XX |
| C. | 44 AA + XY |
| D. | 44 AA + XXY |
| Answer» D. 44 AA + XXY | |