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MCQOPTIONS
This section includes 200950 Mcqs, each offering curated multiple-choice questions to sharpen your General Knowledge knowledge and support exam preparation. Choose a topic below to get started.
| 16451. |
Match Column I with II and choose the right option.Column - I Column - II(1)Artemisia (A) Fibre(2)Astragalus (B) Insecticide(3)Phormium (C) Rat poison(4)Chrysanthemum (D) Medicine(5)Withania (E) Vermifuge (F) Gum |
| A. | 1 – E, 2 – F, 3 – A, 4 – B, 5 – D |
| B. | 1 – E, 2 – E, 3 – A, 4 – F, 5 – D |
| C. | 1 – B, 2 – E, 3 – D, 4 – C, 5 – A |
| D. | 1 – D, 2 – C, 3 – F, 4 – B, 5 – 3 |
| Answer» B. 1 – E, 2 – E, 3 – A, 4 – F, 5 – D | |
| 16452. |
Study the followings related to uses of plants and identify the correct match for the sorghum and cotton respectively.I. Blood purification and organic fertilizer.II. Animal feed and paper industryIII. 'B' Vitamin and cosmetics.IV. Explosives and organic fertilizer.The correct pair is? |
| A. | II, IV |
| B. | III, IV |
| C. | II, III |
| D. | I, II |
| Answer» B. III, IV | |
| 16453. |
Pollution from animal excreta and organic waste from kitchen can be most profitably minimized by? |
| A. | Storing them in underground storage tanks |
| B. | Vermiculture |
| C. | Using them for producing biogas. |
| D. | Using them directly as biofertilizers. |
| Answer» D. Using them directly as biofertilizers. | |
| 16454. |
A hybrid where the cytoplasm of two parent cells are fused by retaining only one parental nucleus is called? |
| A. | Cybrid |
| B. | An interbreed |
| C. | B Symmetric somatic hybrid |
| D. | Asymmetric somatic hybrid |
| Answer» B. An interbreed | |
| 16455. |
Morphine, which is used as an analgesic is obtained from? |
| A. | Taxus brevifolia |
| B. | Cinchona officinalis |
| C. | Papaver somniferum |
| D. | Berberis nilghiriensis |
| Answer» D. Berberis nilghiriensis | |
| 16456. |
Genetic diversity in agricultural crops is threatened by? |
| A. | Intensive use of biopesticides |
| B. | Extensive intercropping |
| C. | Intensive use of fertilizers |
| D. | Introduction of high yielding varieties |
| Answer» E. | |
| 16457. |
An important drug is obtained from the bark of? |
| A. | Withania |
| B. | Papaver |
| C. | Cinchona |
| D. | Momordica |
| Answer» D. Momordica | |
| 16458. |
Powdery mildew of wheat is caused by a species of? |
| A. | Ustilago |
| B. | Puccinia |
| C. | Erysiphe |
| D. | Albugo |
| Answer» D. Albugo | |
| 16459. |
Bacillus thuringiensis (Bt) strains have been used for designing novel? |
| A. | Biofertilizers |
| B. | Bio-insecticidal plants |
| C. | Bio-mineralization processes |
| D. | Bio-metallurgical techniques |
| Answer» C. Bio-mineralization processes | |
| 16460. |
Assertion: Deficiency of sulphur causes chlorosis in plants.Reason: Sulphur is a constituent of chlorophyll, proteins and nucleic acids. |
| A. | Both the Assertion and the Reason are true and the Reason is a correct explanation of the Assertion. |
| B. | Both the Assertion and the Reason are true but the Reason is not a correct explanation of Assertion. |
| C. | Assertion is true but the Reason is false. |
| D. | Both the Assertion and the Reason are false. |
| Answer» D. Both the Assertion and the Reason are false. | |
| 16461. |
In paddy fields biological nitrogen fixation is chiefly brought by? |
| A. | Mycorrhiza |
| B. | Cyanobacteria |
| C. | Green algae |
| D. | Rhizobium |
| Answer» C. Green algae | |
| 16462. |
If by radiation all nitrogenase enzyme are inactivated, then there will be no? |
| A. | Conversion from ammonium to nitrate in soil |
| B. | Conversion from nitrate to nitrite in legumes |
| C. | Fixation of atmospheric nitrogen |
| D. | Fixation of nitrogen in legumes |
| Answer» E. | |
| 16463. |
Match the followings an choose the correct combination from the options given:List - I List - IIa. Sulphur 1.Chlorophyllb. Zinc 2.Nitrogenasec. Magnesium 3.Methionined. Molybdenum 4.Auxin |
| A. | a – 1, b – 2, c – 3, d – 4 |
| B. | a – 3, b – 1, c – 2, d – 4 |
| C. | a – 3, b – 4, c – 1, d – 2 |
| D. | a – 2, b – 4, c – 1, d – 3 |
| Answer» D. a – 2, b – 4, c – 1, d – 3 | |
| 16464. |
Which of the following minerals activate the enzymes involved in respiration? |
| A. | Sulphur and iron |
| B. | Potassium and calcium |
| C. | Magnesium and manganese |
| D. | Nitrogen and phosphorus |
| Answer» D. Nitrogen and phosphorus | |
| 16465. |
The minerals involved in water-splitting reaction during photosynthesis are? |
| A. | Magnesium Chlorine |
| B. | Manganese and Chlorine |
| C. | Potassium and Manganese |
| D. | Molybdenum Manganese |
| Answer» C. Potassium and Manganese | |
| 16466. |
In root nodules of legumes, leg-haemoglobin is important because it? |
| A. | Transports oxygen to the root nodule |
| B. | Provides energy to the nitrogen fixing bacterium |
| C. | Acts as an oxygen scavenger |
| D. | Acts as a catalyst in transamination |
| Answer» D. Acts as a catalyst in transamination | |
| 16467. |
The function of leghemoglobin in the root nodules of legumes is? |
| A. | Nodule differentiation |
| B. | Expression of nif gene |
| C. | Inhibition of nitrogenase activity |
| D. | Oxygen removal |
| Answer» E. | |
| 16468. |
A nutritionally wild type organism, which does not require any additional growth supplement is known as? |
| A. | Holotype |
| B. | Prototroph |
| C. | Auxotroph |
| D. | Phenotype |
| Answer» C. Auxotroph | |
| 16469. |
Select the correct statement about biodiversity? |
| A. | The desert areas of Rajasthan and Gujarat have a very high level of desert animal species as well as numerous rare animals |
| B. | Western Ghats have a very high degree of species richness and endemism |
| C. | Large scale planting of BT cotton has no adverse effect on biodiversity |
| D. | Conservation of biodiversity in just a fad pursued by the developed countries |
| Answer» C. Large scale planting of BT cotton has no adverse effect on biodiversity | |
| 16470. |
The percentage of forest cover recommended by the National Forest policy (1988) is? |
| A. | 23% for plains and 77% for hills |
| B. | 20% for plains and 70% for hills |
| C. | 37% for plains and 63% for hills |
| D. | 33% for plains and 67% for hills |
| Answer» E. | |
| 16471. |
Biodiversity of a geographical region represents? |
| A. | The diversity in the organisms living in the region |
| B. | Endangered species found in the region |
| C. | Species endemic to the region |
| D. | Genetic diversity present in the dominant species of the region |
| Answer» B. Endangered species found in the region | |
| 16472. |
The term Alpha diversity refers to? |
| A. | Genetic diversity |
| B. | Species diversity |
| C. | Community and ecosystem diversity |
| D. | Diversity among the plants |
| Answer» D. Diversity among the plants | |
| 16473. |
Global warming can be controlled by ? |
| A. | Reducing deforestation, cutting down use of fossil fuel |
| B. | Reducing reforestation, increasing the use of fossil fuel |
| C. | Increasing deforestation, slowing down the growth of human population |
| D. | None of these |
| Answer» B. Reducing reforestation, increasing the use of fossil fuel | |
| 16474. |
Darwin’s finches are a good example of? |
| A. | Convergent evolution |
| B. | Adaptive radiation |
| C. | Connecting link |
| D. | Industrial melanism |
| Answer» C. Connecting link | |
| 16475. |
The least porous soil among the following is a? |
| A. | Loamy soil |
| B. | Clayey soil |
| C. | Silty soil |
| D. | Peaty soil |
| Answer» C. Silty soil | |
| 16476. |
Lime is added to the soil which is too? |
| A. | Acidic |
| B. | Alkaline |
| C. | Salty |
| D. | Sandy |
| Answer» B. Alkaline | |
| 16477. |
Sacred groves are specially useful in? |
| A. | Conserving rare and threatened species |
| B. | Year-round flow of water in rivers |
| C. | Preventing soil erosion |
| D. | Generating environmental awareness |
| Answer» B. Year-round flow of water in rivers | |
| 16478. |
–1°C to 13°C annual variations in the intensity and duration of temperature and 50 to 250 cm annual variation in precipitation, account for the formation of major biome as? |
| A. | Tropical forest |
| B. | Temperate forest |
| C. | Coniferous forest |
| D. | Grassland |
| Answer» D. Grassland | |
| 16479. |
Some of the nutrient cycles are labelled as below: Sulphur cycle (a), Phosphorus cycle (b), Carbon cycle (c) and Nitrogen cycle (d) Of these, the sedimentary cycle is represented by? |
| A. | (a) only |
| B. | (b) only |
| C. | (c) only |
| D. | (a) and (b) only |
| Answer» E. | |
| 16480. |
Study the four statements (a–d) given below and select the two correct ones out of them(a) A lion eating a deer and a sparrow feeding on grain are ecologically similar in being consumers(b) Predator star fish Pisaster helps in maintaining species diversity of some invertebrates(c) Predators ultimately lead to the extinction of prey species(d) Production of chemicals such as nicotine, strychnine by the plants are metabolic disordersThe two correct statements are? |
| A. | (a) and (b) |
| B. | (a) and (d) |
| C. | (c) and (d) |
| D. | (b) and (c) |
| Answer» B. (a) and (d) | |
| 16481. |
Plants like Aegle marmelos, Ocimum sanctum and Ficus religiosa are a group of plants designated as? |
| A. | Traditional food crops |
| B. | Medicinal plant species |
| C. | Sacred species of plants |
| D. | Lesser known food plants |
| Answer» D. Lesser known food plants | |
| 16482. |
Wild life conservation aims at :(a) Maintaining the ecological process(b) To enrich the wildlife diversity with exotic species(c) Preventing migration of species(d) Maintaining the diversity of life[d]The correct statements are? |
| A. | a, b |
| B. | b, c |
| C. | c, d |
| D. | a, d |
| Answer» E. | |
| 16483. |
An inexhaustible non-conventional universal source of energy is? |
| A. | Wind energy |
| B. | Hydrothermal energy |
| C. | Solar energy |
| D. | Tidal energy |
| Answer» D. Tidal energy | |
| 16484. |
The greatest problem of water conservation is to reduce the amount of? |
| A. | Precipitation |
| B. | Groundwater |
| C. | Runoff water |
| D. | Evaporation |
| Answer» D. Evaporation | |
| 16485. |
Prolonged liberal irrigation of agricultural fields is likely to create the problem of? |
| A. | Aridity |
| B. | Salinity |
| C. | Metal toxicity |
| D. | Acidity |
| Answer» C. Metal toxicity | |
| 16486. |
Maximum nutritional diversity is found in the group? |
| A. | Animalia |
| B. | Fungi |
| C. | Plantae |
| D. | Monera |
| Answer» E. | |
| 16487. |
Which one of the following is not used for ex situ plant conservation? |
| A. | Field gene banks |
| B. | Shifting cultivation |
| C. | Seed banks |
| D. | Botanical Gardens |
| Answer» C. Seed banks | |
| 16488. |
Read the following statements (A-E) and answer the question which follows them [NEET 2013](A) In liverworts, mosses, and ferns gametophytes are free-living(B) Gymnosperms and some ferns are heterosporous(C) Sexual reproduction in Fucus, Volvox and Albugo is oogamous(D) The sporophyte in liverworts is more elaborate than that in mosses(E) Both, Pinus and Marchantia are dioeciousHow many of the above statements are correct? |
| A. | One |
| B. | Three |
| C. | Two |
| D. | Four |
| Answer» C. Two | |
| 16489. |
Select the wrong statement? |
| A. | Isogametes are similar in structure, function and behaviour |
| B. | In oomycetes female gamete is smaller and motile, while male gamete is larger and nonmotile |
| C. | Anisogametes differ either in structure, function or behaviour |
| D. | Chlamydomonas exhibits both isogamy and anisogamy and fucus shows oogamy |
| Answer» C. Anisogametes differ either in structure, function or behaviour | |
| 16490. |
Match items in Column I with those in Column II Column I Column II (A) Peritrichous flagellation (J) Ginkgo(B) Living fossil (K) Macrocystes(C) Rhizophore (L) Escherichia coli(D) Smallest flowering plant (M) Selaginella(E) Largest Perennial alga (N) Wolffia Select the correct answer with the following |
| A. | A – N, B – L, C – K, D – N, E – J |
| B. | A – J, B – K, C – N, D – L, E – K |
| C. | A – K, B – J, C – L, D – M, E – N |
| D. | A – L, B – J, C – M, D – N, E – K |
| Answer» E. | |
| 16491. |
Which of the following taxa shows zooidogamous oogamy?(I) Spirogyra(II) Funaria(III) Pteris(IV) CycasThe correct answer is ? |
| A. | I, II, III |
| B. | II, III, IV |
| C. | I, II, IV |
| D. | I, III, IV |
| Answer» C. I, II, IV | |
| 16492. |
Which one pair of examples will correctly represent the grouping Spermatophyta according to one of the schemes of classifying plants? |
| A. | Ginkgo, Pisum |
| B. | Rhizopus, Triticum |
| C. | Pinus, Cycas |
| D. | Acacia, Sugarcane |
| Answer» B. Rhizopus, Triticum | |
| 16493. |
Haploid brown, hairlike, delicate unicellular outgrowths are? |
| A. | Rhizoids of fern plants |
| B. | Root modules of Pulses |
| C. | Paraphyses of mosses |
| D. | Root hairs of Gymnosperms |
| Answer» B. Root modules of Pulses | |
| 16494. |
Nostoc fixes dinitrogen in symbiotic association with the following :I. AlnusII. GunneraIII. AnthocerosIV. CasuarinaThe correct combination is ? |
| A. | I and II |
| B. | I and III |
| C. | II and III |
| D. | I and IV |
| Answer» D. I and IV | |
| 16495. |
Besides paddy fields, cyanobacteria are also found inside vegetative part of ? |
| A. | Pinus |
| B. | Equisetum |
| C. | Cycas |
| D. | Psilotum |
| Answer» D. Psilotum | |
| 16496. |
Megasporangium is equivalent to ? |
| A. | Embryo sac |
| B. | Fruit |
| C. | Nucellus |
| D. | Ovule |
| Answer» E. | |
| 16497. |
Comparable to angiosperms, which of the following algae exhibits diplontic life cycle ? |
| A. | Spirogyra |
| B. | Ectocarpus |
| C. | Polysiphonia |
| D. | Fucus |
| Answer» C. Polysiphonia | |
| 16498. |
Isogamous condition with non-flagellated gametes is found in? |
| A. | Chlamydomonas |
| B. | Volvox |
| C. | Spirogyra |
| D. | Fucus |
| Answer» D. Fucus | |
| 16499. |
Variation in gene frequencies within populations can occur by chance rather than by natural selection. This is referred to as ? |
| A. | Genetic flow |
| B. | Random mating |
| C. | Genetic drift |
| D. | Genetic load |
| Answer» D. Genetic load | |
| 16500. |
The process by which organisms with different evolutionary history evolve similar phenotypic adaptations in response to a common environmental challenge, is called ? |
| A. | Natural selection |
| B. | Non-random evolution |
| C. | Convergent evolution |
| D. | Adaptive radiation |
| Answer» D. Adaptive radiation | |