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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.
| 10551. |
A depleting source of energy is |
| A. | Water |
| B. | Wind |
| C. | Sunlight |
| D. | Fossil fuel |
| Answer» E. | |
| 10552. |
In tobacco, enzymatic activity can be retarded by |
| A. | Minerals |
| B. | Auxins |
| C. | By more \[{{N}_{2}}\] |
| D. | None of the above |
| Answer» C. By more \[{{N}_{2}}\] | |
| 10553. |
At a time queen of honey bees lays about |
| A. | 2,000 eggs |
| B. | 20,000 eggs |
| C. | 200 eggs |
| D. | 20,000-25,000 eggs |
| Answer» B. 20,000 eggs | |
| 10554. |
An anaphase chromosome contains [DPMT 1991] |
| A. | 1 DNA molecule |
| B. | 3 DNA molecule |
| C. | 2 DNA molecule |
| D. | 4 DNA molecule |
| Answer» B. 3 DNA molecule | |
| 10555. |
Assertion : Cattle leech Hirudinaria is sanguivorous. Reason : Cattle leech possesses an anticoagulant hirudin. |
| 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 | |
| 10556. |
Most favourable land adaptation for reptile is [CBSE PMT 2001] |
| A. | Moist skin |
| B. | Scales on body |
| C. | Pulmonary respiration |
| D. | None of these |
| Answer» C. Pulmonary respiration | |
| 10557. |
Assertion : Among the primates, chimpanzee is the closest relative of the present day humans. Reason : The banding pattern in the autosome numbers 3 and 6 of man and chimpanzee is remarkably similar. [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» B. If both the assertion and reason are true but the reason is not a correct explanation of the assertion | |
| 10558. |
In which phase of mitosis the chromosomes are arranged around the equator of the spindle [Manipal MEE 1995] |
| A. | Prophase |
| B. | Metaphase |
| C. | Anaphase |
| D. | Telophase |
| Answer» C. Anaphase | |
| 10559. |
Roughages includes |
| A. | Cereals |
| B. | Millets |
| C. | Abundant fibres |
| D. | Broken grams |
| Answer» D. Broken grams | |
| 10560. |
Which among the following is the real product of the honey bee [CBSE PMT 1994] |
| A. | Honey |
| B. | Bee wax |
| C. | Propolis |
| D. | Both b and c |
| Answer» E. | |
| 10561. |
Water is a resource [CBSE PMT 1992] |
| A. | Nondegradable nonmaintainable |
| B. | Degradable maintainable |
| C. | Renewable |
| D. | Non-renewable |
| Answer» C. Renewable | |
| 10562. |
Assertion : Non-myelinated nerve fibres do not possess nodes of Ranvier. Reason : This is due to the absence of nissl?s bodies in node of Ranvier. |
| 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 | |
| 10563. |
Read the assertion and reason carefully: Assertion : The megaspore mother cell divide mitotically to produce four spores. Reason : Megaspore mother cells are diploid and megaspore is haploid. [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» F. | |
| 10564. |
Elementary fibrils of cellulose are also known as |
| A. | Micelles |
| B. | Microfibrils |
| C. | Sub-micelles |
| D. | Sub-microfibrils |
| Answer» B. Microfibrils | |
| 10565. |
Which of the following is absent in prokaryotes [CPMT 1994] |
| A. | Nuclear membrane |
| B. | Golgi bodies |
| C. | Endoplasmic reticulum |
| D. | All the above |
| Answer» E. | |
| 10566. |
Vessels and Companion cells are characteristics of [BCECE 2005] |
| A. | Angiosperm |
| B. | Gymnosperm |
| C. | Pteridophyta |
| D. | Fern |
| Answer» B. Gymnosperm | |
| 10567. |
The place where auxins are active is |
| A. | Tip of stem |
| B. | Growing fruit |
| C. | Growing embryo |
| D. | All the above |
| Answer» B. Growing fruit | |
| 10568. |
Elasmobranchs are exclusively |
| A. | Fresh water forms |
| B. | Marine water forms |
| C. | Brackish water forms |
| D. | None of these |
| Answer» C. Brackish water forms | |
| 10569. |
In India coniferous forests are found in [BHU 1983; MP PMT 1992] |
| A. | Madhya Pradesh |
| B. | Himalayan region |
| C. | Satpura hills |
| D. | Rajasthan |
| Answer» C. Satpura hills | |
| 10570. |
Advantage of energy plantations is |
| A. | Running nuclear plants |
| B. | To reduce pressure on forests |
| C. | To decrease soil erosion and pollution |
| D. | Both b and c |
| Answer» E. | |
| 10571. |
Read the assertion and reason carefully to mark the correct option out of the options given below: Assertion : Smokers are prone to respiration related diseases. Reason : Tobacco smoke destroys cilia present in respiratory tract. |
| 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. | |
| 10572. |
Conversion of sugar into alcohol during fermentation is due to the direct action of [MP PMT 1992, 94] |
| A. | Temperature |
| B. | Micro-organisms |
| C. | Concentration of sugar solution |
| D. | Zymase |
| Answer» E. | |
| 10573. |
Assertion : The mesophyll of Pinus shows no distinction as mesophyll and palisade. Reason : Parenchymatous cells are present in mesophyll of Pinus. |
| 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 | |
| 10574. |
\[{{C}_{4}}\]photosynthesis does not occur in [MP PMT 1990, 2000; CPMT 1994] |
| A. | Zea mays |
| B. | Saccharum munja |
| C. | Saccharum officinarum |
| D. | Euphorbia splendens |
| Answer» E. | |
| 10575. |
Assertion : Every somatic cell and tissue of the body produces gemmule. Reason : Gemmules unite in gametes. |
| 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 | |
| 10576. |
Assertion : Cold blooded animals do not have fat layer. [AIIMS 1997] Reason : Cold blooded animals use their fat for metabolic process during hibernation. |
| 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 | |
| 10577. |
Read the assertion and reason carefully: Assertion : Piper nigrum shows the presence of perisperm. Reason : The persistent nucellus is called perisperm. |
| 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 | |
| 10578. |
The injection of serum of horse which has been repeatedly injected by cobra venom into a person bitten by cobra results in [MP PMT 1986] |
| A. | No immunity |
| B. | Natural immunity |
| C. | Active immunity |
| D. | Passive immunity |
| Answer» E. | |
| 10579. |
Assertion : Ascidians undergo retrogressive metamorphosis. Reason : Metamorphosis involves transformation of an active form into inert, sedentary form. |
| 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 | |
| 10580. |
Match the following plants according to their family Plants Family 1. Lodh tree I. Lecythidaceae 2. Qunine II. Lauraceae 3. Kachnar III. Symplocaceae 4. Indian oak IV. Meliaceae 5. Dalchini V. Caesalpiniaceae 6. Rohan VI. Rubiaceae Correct pair is |
| A. | 1 - I 2 - II 3 - III 4 - IV 5 - V 6 - VI |
| B. | 1 - VI 2 - V 3 - IV 4 - III 5 - II 6 - I |
| C. | 1 - III 2 - VI 3 - V 4 - I 5 - II 6 - IV |
| D. | 1 - II 2 - I 3 - IV 4 - V 5 - VI 6 - III |
| Answer» D. 1 - II 2 - I 3 - IV 4 - V 5 - VI 6 - III | |
| 10581. |
Broom corn is obtained from |
| A. | Panicum |
| B. | Borassus |
| C. | Attalia |
| D. | None of the above |
| Answer» B. Borassus | |
| 10582. |
The number of DNA in chromosome at \[{{G}_{2}}\]stage of cell cycle [RPMT 2002] |
| A. | One |
| B. | Two |
| C. | Four |
| D. | Eight |
| Answer» C. Four | |
| 10583. |
Assertion : Erythrocytic merozoites form gametocytes. Reason : Gametocytes are of two types - male and female. |
| 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 | |
| 10584. |
Which of the following is not correct |
| A. | The brown adipose tissue cell has a single large droplet surrounded by a small amount of cytoplasm, whereas the white adipose tissue cell has many small droplets of fat suspended in a larger amount of cytoplasm |
| B. | Brown fat cells contain many mitochondria, while white fat cells have comparatively few |
| C. | Brown fat has a larger capacity for generating heat than white fat |
| D. | Brown fat is mainly found in new born mammals |
| Answer» B. Brown fat cells contain many mitochondria, while white fat cells have comparatively few | |
| 10585. |
Typhlops is [CBSE PMT 1988, BHU 2001] |
| A. | Sea snake |
| B. | Grass snake |
| C. | Glass snake |
| D. | Blind snake |
| Answer» E. | |
| 10586. |
Chlamydomonas does not occur in [CPMT 2002] |
| A. | Fresh water |
| B. | Pond and lake |
| C. | River |
| D. | Ocean |
| Answer» E. | |
| 10587. |
Assertion : Under aerobic conditions, pyruvate gives rise to lactate. Reason : Under anaerobic condition, pyruvate gives rise to acetyl CoA. |
| 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 | |
| 10588. |
Rinderpest is the disease of |
| A. | Buffaloes |
| B. | Cattle |
| C. | Pigs |
| D. | Horses |
| Answer» C. Pigs | |
| 10589. |
Dolphins are |
| A. | Fishes |
| B. | Amphibians |
| C. | Reptiles |
| D. | Mammals |
| Answer» E. | |
| 10590. |
The order insectivora comes under [KCET 2001] |
| A. | Class mammalia |
| B. | Class insecta |
| C. | Phylum echinodermata |
| D. | Phylum arthropoda |
| Answer» B. Class insecta | |
| 10591. |
Read the assertion and reason carefully to mark the correct option out of the options given below: Assertion : Nematodes and tunicates show auxetic growth. Reason : In these animals, growth occurs only by increases in size of cells and not number of cells. |
| 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 | |
| 10592. |
Vinegar is produced from sugars with the help of [MP PMT 1992; CPMT 1993] |
| A. | Lactobacillus |
| B. | Acetobacter |
| C. | Nitrosomonas |
| D. | Salmonella |
| Answer» C. Nitrosomonas | |
| 10593. |
One of the preventive methods of fruit drop is by spraying [KCET 1998] |
| A. | Auxin |
| B. | Ethylene gas |
| C. | Gibberellins |
| D. | Cytokinine |
| Answer» B. Ethylene gas | |
| 10594. |
In teleosts, reptiles and birds the cleavage pattern is |
| A. | Equal holoblastic |
| B. | Unequal holoblastic |
| C. | Incomplete meroblastic |
| D. | Complete meroblastic |
| Answer» D. Complete meroblastic | |
| 10595. |
Spread of cancerous cells to distant sites is termed as [MP PMT 1999] |
| A. | Metastasis |
| B. | Oncogenes |
| C. | Proto-oncogenes |
| D. | Malignant neoplasm |
| Answer» B. Oncogenes | |
| 10596. |
Technique of cryopreservation is used for |
| A. | Preservation of various tissues |
| B. | Preservation of semen of good quality bulls |
| C. | Preservation of very young foetuses |
| D. | All of the above |
| Answer» E. | |
| 10597. |
A phenomenon of embryonic induction was first described in amphibia by |
| A. | Aristotle |
| B. | Spemann |
| C. | Von Baer |
| D. | Spallanzani |
| Answer» C. Von Baer | |
| 10598. |
Cleidoic eggs are found in [MP PMT 1988, 02; CMC Vellore 1993; BVP 2001] |
| A. | Birds |
| B. | Mammals |
| C. | Annelids |
| D. | Molluscs |
| Answer» B. Mammals | |
| 10599. |
Spindle apparatus is formed during which stage of mitosis [AFMC 1999] |
| A. | Prophase |
| B. | Metaphase |
| C. | Anaphase |
| D. | Telophase |
| Answer» C. Anaphase | |
| 10600. |
The blastopore develops into future [CPMT 1976; DPMT 1985; JIPMER 2002] |
| A. | Mouth |
| B. | Ear |
| C. | Anus |
| D. | Neuropore |
| Answer» D. Neuropore | |