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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.
| 11951. |
The phosphorus rich fertilizer obtained from sea birds along the coast of Chile and Peru, is [Rohtak 1996] |
| A. | Guano |
| B. | Bone meal |
| C. | Dung |
| D. | Urea |
| Answer» B. Bone meal | |
| 11952. |
Savannah's are [BHU 1983; MP PMT 1989, 91, 2002; Haryana PMT 1993; BHU 1996] |
| A. | Tropical rain forest |
| B. | Desert |
| C. | Grassland with scattered trees |
| D. | Dense forest with close canopy |
| Answer» D. Dense forest with close canopy | |
| 11953. |
Which of the following pesticides have been successfully used in the control of locusts and grasshoppers in India |
| A. | Sevin |
| B. | Aldrin |
| C. | Parathion |
| D. | Temik |
| Answer» C. Parathion | |
| 11954. |
Which protein production was successfully introduced in E. coli |
| A. | Interferon |
| B. | Xanthotoxin |
| C. | Somatostatin |
| D. | Relaxin |
| Answer» B. Xanthotoxin | |
| 11955. |
Biological diversity day is |
| A. | 44352 |
| B. | 44276 |
| C. | 44472 |
| D. | 44559 |
| Answer» E. | |
| 11956. |
Polytene chromosomes are formed by [CPMT 2005] |
| A. | Endoreduplication of chromosomes |
| B. | Somatic pairing of homologous chromosomes |
| C. | Somatic pairing of non-homologous chromosomes |
| D. | Germinal pairing of non-homologous chromosomes |
| Answer» B. Somatic pairing of homologous chromosomes | |
| 11957. |
Which of the statements is not true of the \[{{C}_{4}}\] pathway [AIEEE 2004] |
| A. | It requires more energy than the \[{{C}_{3}}\] pathway for production of glucose |
| B. | It overcomes loss due to photorespiration |
| C. | The \[C{{O}_{2}}\] acceptor is a \[{{C}_{3}}\] compound |
| D. | It is inhibited by high \[C{{O}_{2}}\] concentration |
| Answer» D. It is inhibited by high \[C{{O}_{2}}\] concentration | |
| 11958. |
Exotic breeds are |
| A. | Used for cross breeding |
| B. | Allowed to multiply and replace local breeds |
| C. | Cheaper |
| D. | Resistant to local pests and pathogens |
| Answer» B. Allowed to multiply and replace local breeds | |
| 11959. |
In chromosomes, the material controlling heredity is |
| A. | DNA |
| B. | Histones |
| C. | Chromocentres |
| D. | RNA |
| Answer» B. Histones | |
| 11960. |
Cereals are major sources of [MP PMT 1996] |
| A. | Carbohydrates |
| B. | Proteins |
| C. | Fats |
| D. | Vitamins |
| Answer» B. Proteins | |
| 11961. |
Genes located at the same locus of chromosomes are called[CBSE PMT 1997] |
| A. | Polygenes |
| B. | Oncogenes |
| C. | Multiple alleles |
| D. | None of these |
| Answer» D. None of these | |
| 11962. |
Most dinosaurs became extinct during [BHU 1998] |
| A. | Late Triassic |
| B. | Late Jurassic |
| C. | Cretaceous |
| D. | Early Tertiary |
| Answer» D. Early Tertiary | |
| 11963. |
Cystolith is made up of [MP PMT 2000] |
| A. | Calcium oxalate |
| B. | Calcium carbonate |
| C. | Calcium hydroxide |
| D. | Calcium oxide |
| Answer» C. Calcium hydroxide | |
| 11964. |
The milk yielding capacity of Buffalo is |
| A. | Three times more than cows |
| B. | Double than cows |
| C. | Four times more than cows |
| D. | None of the above |
| Answer» B. Double than cows | |
| 11965. |
Calcium deficiency results in the formation of an egg with |
| A. | Lesser amount of yolk |
| B. | Lesser amount of albumen |
| C. | Soft shell |
| D. | Non porous shell |
| Answer» D. Non porous shell | |
| 11966. |
How many cleavages are completed in 16 celled stage of egg. [CPMT 1975] |
| A. | 3 |
| B. | 4 |
| C. | 8 |
| D. | 12 |
| Answer» C. 8 | |
| 11967. |
Synaptonemal complex was discovered in [BHU 2000] |
| A. | 1956 |
| B. | 1950 |
| C. | 1935 |
| D. | 1980 |
| Answer» B. 1950 | |
| 11968. |
More than one pyrenoid are present in [CPMT 1991] |
| A. | Ulothrix |
| B. | Spirogyra |
| C. | Oedogonium |
| D. | All the above |
| Answer» E. | |
| 11969. |
Polygalactronoids are the major constituents of |
| A. | Middle lamella |
| B. | Primary cell wall |
| C. | Secondary cell wall |
| D. | Cell membrane |
| Answer» D. Cell membrane | |
| 11970. |
Assertion : The duck-billed Platypus and the spiny ant-eater, both are egg-laying animals yet they are grouped under mammals. [AIIMS 2005] Reason : Both of them have seven cervical vertebrae and 12 pairs of cranial nerves. [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» B. If both the assertion and reason are true but the reason is not a correct explanation of the assertion | |
| 11971. |
Who is popularly known as the "Father of Phycology'' |
| A. | Fritsch |
| B. | Papenfus |
| C. | Smith |
| D. | Morris |
| Answer» B. Papenfus | |
| 11972. |
Fuel wood is [APMEE 1990; EAMCET 1990] |
| A. | Source of petroleum products |
| B. | Renewable resource of energy |
| C. | Source of biogas |
| D. | Source of alcohol |
| Answer» B. Renewable resource of energy | |
| 11973. |
Energy from wood must be extracted more efficiently through |
| A. | Carbonisation |
| B. | Pyrolysis |
| C. | Gasification |
| D. | All of these |
| Answer» E. | |
| 11974. |
Assertion : One molecule of \[C{{O}_{2}}\] is fixed to give 686 kcal in photosynthesis. Reason : To form a hexose, six molecules of \[C{{O}_{2}}\]are fixed. |
| 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. | |
| 11975. |
Which of the following has auxin like property |
| A. | a-naphthalene acetic acid |
| B. | b-naphthalene acetic acid |
| C. | Both [a] and [b] |
| D. | None of the above |
| Answer» D. None of the above | |
| 11976. |
Temperate evergreen forests are found in [MP PMT 1992] |
| A. | Himalayan ranges |
| B. | Western ghats |
| C. | Aravali ranges |
| D. | Assam |
| Answer» B. Western ghats | |
| 11977. |
Classical experiments on growth were performed by [NCERT 1980] |
| A. | Lamarck and Boysen-Jennsen |
| B. | Boysen-Jennsen and Darwin |
| C. | Darwin and Lamarck |
| D. | de Vries and Paul |
| Answer» C. Darwin and Lamarck | |
| 11978. |
Assertion : The concept of one gene-one enzyme was changed to one gene-one polypeptide. Reason : Each enzyme may consist of two or more different polypeptide. |
| 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 | |
| 11979. |
Assertion : All living species of Cycas are dioecious. Reason : Cycas contains male and female cones on the same plant. |
| 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 | |
| 11980. |
Assertion : Materials are exchanged between epithelial & connective tissue by diffusion. Reason : Blood vessels are absent in epithelial tissue. |
| 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 | |
| 11981. |
Poisonous fangs of a snake are modified [CPMT 1986; MP PMT 1990] |
| A. | Mandible |
| B. | Maxillary teeth |
| C. | Canines |
| D. | Nasals |
| Answer» C. Canines | |
| 11982. |
Tap roots are commonly found in [CPMT 1985] |
| A. | Gymnosperms |
| B. | Angiosperms |
| C. | Dicots |
| D. | Monocots |
| Answer» D. Monocots | |
| 11983. |
Which of the molecules listed below is a product of fermentation of glucose by yeast [MP PMT 1999] |
| A. | \[({{C}_{6}}{{H}_{10}}{{O}_{5}})n\] |
| B. | \[{{C}_{2}}{{H}_{5}}OH\] |
| C. | \[{{C}_{6}}{{H}_{12}}{{O}_{6}}\] |
| D. | \[C{{H}_{3}}OH\] |
| Answer» C. \[{{C}_{6}}{{H}_{12}}{{O}_{6}}\] | |
| 11984. |
Retention of larval characters even after sexual maturity is called [BHU 1993; Kerala CET 2005] |
| A. | Ontogenesis |
| B. | Parthenogenesis |
| C. | Neoteny |
| D. | Phyllogenesis |
| Answer» D. Phyllogenesis | |
| 11985. |
Read the assertion and reason carefully: Assertion : Trailers root at the nodes. Reason : Trailers is a weak stem. |
| 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. | |
| 11986. |
Condensation of chromosomes occurs in [AFMC 2002] |
| A. | Prophase I |
| B. | Prophase II |
| C. | Anaphase |
| D. | Metaphase |
| Answer» B. Prophase II | |
| 11987. |
Turtles are [KCET 2002] |
| A. | Pisces |
| B. | Reptiles |
| C. | Molluscans |
| D. | Arthropods |
| Answer» C. Molluscans | |
| 11988. |
Silent Valley has been preserved as it has [BHU 1981] |
| A. | Recreational value |
| B. | Valuable timber plants |
| C. | Natural forest |
| D. | Rare plants and animals |
| Answer» D. Rare plants and animals | |
| 11989. |
The enzymes of dark reaction in\[{{C}_{4}}\]plants are found in |
| A. | Bundle sheath chloroplast |
| B. | Mesophyll chloroplast |
| C. | Both [a] and [b] |
| D. | None of the above |
| Answer» D. None of the above | |
| 11990. |
What is most effective way to conserve plant diversity of an area [CBSE PMT 2004] |
| A. | Tissue culture |
| B. | Botanical garden |
| C. | Biosphere reserves |
| D. | Seed banks |
| Answer» D. Seed banks | |
| 11991. |
Which is correct about white tiger [Orissa JEE 2004] |
| A. | White tiger is recessive mutant |
| B. | It is a part of subspecies of Indian tiger |
| C. | It is a type of albino |
| D. | It is a transgenic animal |
| Answer» B. It is a part of subspecies of Indian tiger | |
| 11992. |
Read the assertion and reason carefully: Assertion : The flowers of Hypanthodium are never exposed. Reason : Hypanthodium flowers are bisexual. |
| 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 | |
| 11993. |
The term 'gene' was coined by [CPMT 1973; MH-CET 2004] |
| A. | Mendel |
| B. | Johannsen |
| C. | Khorana |
| D. | Kornberg |
| Answer» C. Khorana | |
| 11994. |
Milk yield of a cow in India is much lower than in many countries due to |
| A. | Inferior breeds |
| B. | Improper feeding |
| C. | Poor care |
| D. | All the above |
| Answer» E. | |
| 11995. |
Read the assertion and reason carefully to mark the correct option out of the options given below: Assertion : LSD is the most powerful psychedelic. Reason : Psychedic drugs cause hallucination. |
| 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. | |
| 11996. |
In oogamy, fertilization involves [CBSE PMT 2004] |
| A. | A large non-motile female gamete and a small non-motile male gamete |
| B. | A large motile female gamete and a small non-motile male gamete |
| C. | A small non-motile female gamete and a large motile male gamete |
| D. | A large non-motile female gamete and a small motile male gamete |
| Answer» E. | |
| 11997. |
Assertion : Morels and Truffles are edible fungi. Reason : Ascocarps are edible. |
| 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 | |
| 11998. |
Meridional cleavage results in blastomeres numbering |
| A. | 8 |
| B. | 4 |
| C. | 10 |
| D. | 16 |
| Answer» C. 10 | |
| 11999. |
Which type of cell division occurs in the gonads [RPMT 2001] |
| A. | Mitosis only |
| B. | Meiosis |
| C. | Both (a) and (b) |
| D. | Amitosis and meiosis |
| Answer» D. Amitosis and meiosis | |
| 12000. |
Assertion : Study of internal structure is called anatomy. Reason : It is useful for phylogentic study. |
| 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 | |