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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.
| 2051. |
Which bacteria would function best in hot temperatures\[(45-60{}^\circ C)\]? |
| A. | Psychrophiles |
| B. | Thermophiles |
| C. | Mesophiles |
| D. | All would do equally well |
| Answer» C. Mesophiles | |
| 2052. |
Nutritionally bacteria are: |
| A. | Autotrophic |
| B. | Symbiotic |
| C. | Parasitic |
| D. | All of the above |
| Answer» E. | |
| 2053. |
Which of the following combinations of characters is true for slime moulds? |
| A. | Parasitic, plasmodium with true walls, spores dispersed by air currents. |
| B. | Saprophytic, plasmodium without walls, spores dispersed by water. |
| C. | Parasitic, plasmodium without walls, spores dispersed by water. |
| D. | Saprophytic, plasmodium without walls, spores dispersed by air currents. |
| Answer» E. | |
| 2054. |
The symbiotic association of fungi and algae is called: |
| A. | Lichen |
| B. | Mycorrhiza |
| C. | Rhizome |
| D. | Endomycorrhiza |
| Answer» B. Mycorrhiza | |
| 2055. |
Members of Phycomycetes are found: (i) in aquatic habitats (ii) on decaying wood (iii) in moist and damp places (iv) as obligate parasite on plants Which of the statements given above are correct? |
| A. | (i) and (ii) |
| B. | (ii), (iii) and (iv) |
| C. | (i), (ii) and (iii) |
| D. | (i), (ii), (iii) and (iv) |
| Answer» E. | |
| 2056. |
Which of the following regarding protists, in general, is false? |
| A. | Protists are always parasitic. |
| B. | Protists are single-celled. |
| C. | Protists are heterotrophic. |
| D. | All of the above |
| Answer» E. | |
| 2057. |
Read the given statements and answer the question. (i) It includes unicellular as well as multicellular fungi. (ii) In multicellular forms, hyphae are branched and septate. (iii) Conidiophore produces conidia (spores) exogenously in chain. (iv) Sexual spores are ascospores produced endogenously in chain. (v) Fruiting body is called ascocarp. Identify the correct class of fungi which have all the above given characteristics. |
| A. | Phycomycetes |
| B. | Sac fungi |
| C. | Club fungi |
| D. | Fungi imperfecti |
| Answer» C. Club fungi | |
| 2058. |
Identify the correct statements regarding archaebacteria. (i) Archaebacteria differs from other bacteria in having different cell wall structure. (ii) Their cell wall is made up of cellulose and contains high amount of unsaturated fatty acid, which is responsible for their survival in extreme conditions. (iii) Thermoacidophiles have dual ability to tolerate high temperature as well as high acidity. |
| A. | (i) and (ii) |
| B. | (ii) and (iii) |
| C. | (i) and (iii) |
| D. | (i), (ii) and (iii) |
| Answer» D. (i), (ii) and (iii) | |
| 2059. |
A bacteriophage is: |
| A. | a virus attacking a bacterium. |
| B. | a bacterium attacking a virus. |
| C. | a stage in the life-cycle of bacterium. |
| D. | virus attacking another virus. |
| Answer» B. a bacterium attacking a virus. | |
| 2060. |
Litmus is obtained from: |
| A. | Lichen |
| B. | Algae |
| C. | Fungi |
| D. | Protozoa |
| Answer» B. Algae | |
| 2061. |
Match column-I with column-II and select the correct answer using the codes given below. Column-I (Kingdom) Column-II (Class) A. Plantae I. Arhaebacteria B. Fungi II. Euglenoids C. Protista III. Phycomucetes D. Monera IV. Algae |
| A. | A-IV B-III C-II D-I |
| B. | A-I B-II C-III D-IV |
| C. | A-III B-IV C-II D-I |
| D. | A-IV B-II C-III D-I |
| Answer» B. A-I B-II C-III D-IV | |
| 2062. |
How many kingdoms contain eukaryotes in five kingdom system of classification of R.H Whittaker? |
| A. | Four kingdoms |
| B. | One kingdom |
| C. | Two kingdoms |
| D. | Three kingdoms |
| Answer» B. One kingdom | |
| 2063. |
Locomotory structures are absent in: |
| A. | Sporozoans |
| B. | Ciliates |
| C. | Zooflagellates |
| D. | Rhizopods |
| Answer» B. Ciliates | |
| 2064. |
The given figure represent a type of virus with two parts labelled as 1 and 2. Identify the virus and the labelled parts. |
| A. | 1-R2NA 2-Capsid Virus -Tobacco Mosaic Virus |
| B. | 1-DNA 2-Capsid Virus -Tobacco Mosaic Virus |
| C. | 1-RNA 2-Lipid Virus -Tobacco Mosaic Virus |
| D. | 1-RNA 2-Protein Virus -HIV |
| Answer» B. 1-DNA 2-Capsid Virus -Tobacco Mosaic Virus | |
| 2065. |
Identify the following figures. |
| A. | A - Euglena, B - Paramoecium, C - Agaricus |
| B. | A - Euglena, B - Planaria, C - Agaricus |
| C. | A - Planaria, B - Paramoecium, C - Agaricus |
| D. | A - Euglemi, B - Paramoecium, C - Aspergillus |
| Answer» B. A - Euglena, B - Planaria, C - Agaricus | |
| 2066. |
Bacteria were regarded to be plants because: |
| A. | some of them are green. |
| B. | they are present everywhere. |
| C. | some of them cannot move. |
| D. | they have a rigid cell wall. |
| Answer» E. | |
| 2067. |
Match column-I with column-II and select the correct answer using the codes given below. Column-I (Fungus name) Column-II (Commonly called) A. Puccinia I. Yeast B. Ustilago II. Mushroom C. Agaricus III. Smut fungus D. Saccharomyces IV. Rust fungus |
| A. | A-I B-II C-III D-IV |
| B. | A-II B-III C-IV D-I |
| C. | A-III B-IV C-I D-II |
| D. | A-IV B-III C-II D-I |
| Answer» E. | |
| 2068. |
Antibiotics are mostly obtained from: |
| A. | Bacteria |
| B. | Viruses |
| C. | Angiosperms |
| D. | Fungi |
| Answer» B. Viruses | |
| 2069. |
Consider the below statements and identify the correct statements regarding classification. (i) Biological classification is the scientific ordering of organisms in a hierarchical series of groups on the basis of their relationships, i.e. morphological, evolutionary and others. (ii) Whittaker classified organisms on the basis of autotrophic and heterotrophic mode of nutrition. (iii) In five kingdom system of classification, living organisms can be divided into prokaryotic and eukaryotic cells on the basis of cell structure. |
| A. | (i), (ii) and (iii) |
| B. | (i) and (iii) |
| C. | (ii) and (iii) |
| D. | (i) and (ii) |
| Answer» B. (i) and (iii) | |
| 2070. |
Read the following statements and answer the question given below. (i) They are saprophytic protists. (ii) Under suitable conditions, they form an aggregation (called plasmodium) which may grow and spread over several feet. (iii) During unfavourable conditions, the plasmodium differentiates and forms fruiting bodies bearing spores at their tips. Which of the following class of protists is being described by the above statements? |
| A. | Euglenoids |
| B. | Dinoflagellates |
| C. | Slime moulds |
| D. | Protozoans |
| Answer» D. Protozoans | |
| 2071. |
Match the type of protozoans given in column-I with their examples given in column-II and choose the correct option. Column-I (Type of Protozoans) Column-II (Examples) A. Amoeboid protozoans I. Paramoecium B. Ciliated protozoans II. Plasmodium C. Flagellated protozoans III. Amoeba D. Sporozoans IV. Trypanosoma |
| A. | A-I B-III C-IV D-II |
| B. | A-III B-I C-II D-IV |
| C. | A-III B-I C-IV D-II |
| D. | A-III B-IV C-I D-II |
| Answer» D. A-III B-IV C-I D-II | |
| 2072. |
Pseudomycelium is a characteristic feature of: |
| A. | Mushroom |
| B. | Mucor |
| C. | Bread mould |
| D. | Yeast |
| Answer» E. | |
| 2073. |
Which one statement is the most important human activity leading to extinction of wildlife? |
| A. | Alteration and destruction of the natural habitats. |
| B. | Hunting for commercially valuable wildlife products. |
| C. | Pollution of air and water. |
| D. | Introduction of alien species. |
| Answer» B. Hunting for commercially valuable wildlife products. | |
| 2074. |
Which one of the following sets consists entirely of endangered wild life species of India? |
| A. | Himalayan musk deer. Black buck, Indian lion. Rhino, Sambar |
| B. | Himalayan musk deer, Indian lion, Rhino, Wild buffalo. Golden cat |
| C. | Egret, Black boar. Bison, Spotted deer |
| D. | Himalayan musk deer, Great Indian bustard, Snow leopard, Kashmir stag. Wild ass |
| Answer» E. | |
| 2075. |
The area where wild populations, traditional life styles and genetic resources are protected, is: |
| A. | Core Zone |
| B. | Buffer Zone |
| C. | Biosphere reserve |
| D. | Manipulation Zone |
| Answer» D. Manipulation Zone | |
| 2076. |
Urbanisation and increase in human population affects biodiversity by: |
| A. | rendering the land as underproductive. |
| B. | leading to permanent loss of flora and fauna. |
| C. | reducing the dependence on nature. |
| D. | maintaining land fertility. |
| Answer» C. reducing the dependence on nature. | |
| 2077. |
Which of the following is the main factor of desertification? |
| A. | Tourism |
| B. | Irrigated agriculture |
| C. | Over-grazing |
| D. | All of these |
| Answer» D. All of these | |
| 2078. |
Human activities such as clear-cutting and road building often create edges between areas of different habitat. Edges created by human activities: |
| A. | are usually more abrupt than natural boundaries between habitats. |
| B. | may have their own species not present in adjacent habitats. |
| C. | may be dominated by relatively few species. |
| D. | All of the above |
| Answer» E. | |
| 2079. |
What is genetic diversity? |
| A. | The total genetic information contained within all individuals of species. |
| B. | The total phenotypic information contained within all individuals of a species. |
| C. | The variety of life-forms on Earth. |
| D. | The variety of biotic communities in a region along with abiotic components. |
| Answer» B. The total phenotypic information contained within all individuals of a species. | |
| 2080. |
First National Park of India is: |
| A. | Periyar |
| B. | Kaziranga |
| C. | Corbett National Park |
| D. | Palamau |
| Answer» D. Palamau | |
| 2081. |
In cryopreservation, germplasm is maintained at |
| A. | \[-196{}^\circ F\] |
| B. | \[0{}^\circ F\] |
| C. | \[-100{}^\circ F\] |
| D. | None of these |
| Answer» E. | |
| 2082. |
'Project Tiger' in India was started in: |
| A. | 1970 |
| B. | 1973 |
| C. | 1981 |
| D. | 1985 |
| Answer» C. 1981 | |
| 2083. |
Gujarat forest 'Gir' is famous for: |
| A. | Asiatic lion |
| B. | Tiger |
| C. | Birds |
| D. | None of these |
| Answer» B. Tiger | |
| 2084. |
The largest brackish water lagoon in Asia is: |
| A. | Pulikat lake |
| B. | Chilka lake |
| C. | Sukhna lake |
| D. | Sultanpur lake |
| Answer» C. Sukhna lake | |
| 2085. |
Which one of the following statement is correct for genetic diversity? |
| A. | The total genetic information contained within all individuals of species. |
| B. | The total phenotypic information contained within all individuals of a species. |
| C. | The variety of life-forms on earth. |
| D. | The variety of biotic communities in a region along with abiotic components. |
| Answer» B. The total phenotypic information contained within all individuals of a species. | |
| 2086. |
Match column-I with column-II and choose the correct option. Column-I Column-II A. Narrowly utilitarian argument I. Conserving biodiversity for major ecosystem services. B. Broadly utilitarian argument II. Conserving biodiversity for philosophical or spiritual need to realize that every species has entrinsic value and moral duty to pass our biological legacy in good order to future generation. C. Ethical argument III. Conserving biodiversity for direct economic benefits like food, medicine, industrial products etc. |
| A. | A-I; B-II; C-III |
| B. | A-III; B-I; C-II |
| C. | A-II; B-I; C-III |
| D. | A-I; B-III; C-II |
| Answer» C. A-II; B-I; C-III | |
| 2087. |
One of the ex-situ conservation methods for endangered species is: |
| A. | Wildlife Sanctuaries |
| B. | Biosphere Reserves |
| C. | Cryopreservation |
| D. | National parks |
| Answer» D. National parks | |
| 2088. |
Kaziranga wild life sanctuary is famous for |
| A. | Tiger |
| B. | Musk deer |
| C. | Elephant |
| D. | Rhinoceros |
| Answer» E. | |
| 2089. |
Which of the following represents the biodiversity of an area? |
| A. | Gene |
| B. | Species |
| C. | Ecosystem |
| D. | All of these |
| Answer» C. Ecosystem | |
| 2090. |
In a biosphere reserve, limited human activity is permitted in: |
| A. | Core zone |
| B. | Buffer zone |
| C. | Manipulation zone |
| D. | None of these |
| Answer» C. Manipulation zone | |
| 2091. |
Exotic species: |
| A. | are often endangered. |
| B. | usually increase biodiversity. |
| C. | often enhance the habitat for native species. |
| D. | usually reduce biodiversity. |
| Answer» E. | |
| 2092. |
Diversity of habitat over the total landscape is called: |
| A. | P diversity |
| B. | y diversity (gamma) |
| C. | Landscape diversity |
| D. | Ecosystem diversity |
| Answer» C. Landscape diversity | |
| 2093. |
Identify the correct statements and choose the option. (i) Diversity in species provides stability to the ecosystem. (ii) Communities with greater number of species tend to be more stable than those with less number of species. (iii) Ecosystem with higher biodiversity is more productive than the ecosystem with lower biodiversity. (iv) Biodiversity does not play any role in the maintenance and health of ecosystems. |
| A. | (i), (ii) and (iii) |
| B. | (i), (ii) and (iv) |
| C. | (ii), (iii), and (iv) |
| D. | (i), (ii), (iii), and (iv) |
| Answer» B. (i), (ii) and (iv) | |
| 2094. |
A number of natural reserves have been created to conserve specific wild life species. Identify the correct combination from the following. |
| A. | Gir Forest - Tiger |
| B. | Kaziranga - Elephants |
| C. | Rann of Kutch - Wild Ass |
| D. | Manas wild life - Musk deer Sancturay |
| Answer» D. Manas wild life - Musk deer Sancturay | |
| 2095. |
Which one of the following in India, is a hotspot of biodiversity? |
| A. | Sunderbans |
| B. | Eastern Ghats |
| C. | Western Ghats |
| D. | Gangetic Plain |
| Answer» D. Gangetic Plain | |
| 2096. |
Which of the following species is endangered? |
| A. | Panthera leo persica |
| B. | Python molurus |
| C. | Chelonia mydas |
| D. | Siberian crane |
| Answer» C. Chelonia mydas | |
| 2097. |
New approach of conservation is the establishment of: |
| A. | Sancturies |
| B. | Reserve forests |
| C. | National parks |
| D. | Biosphere reserves |
| Answer» E. | |
| 2098. |
Which is preserved in National Park? |
| A. | Flora |
| B. | Fauna |
| C. | Both [a] and [b] |
| D. | None of these |
| Answer» D. None of these | |
| 2099. |
Which animal is the symbol of WWF (World Wildlife Fund): |
| A. | Dolphin |
| B. | Tiger |
| C. | Giant Panda |
| D. | Great Indian Bustard |
| Answer» D. Great Indian Bustard | |
| 2100. |
The Red data Book, which lists endangered species of animals, is maintained by: |
| A. | WWF |
| B. | UNO |
| C. | WHO |
| D. | IUCN |
| Answer» E. | |