MCQOPTIONS
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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.
| 151. |
Patella bone is an example of [AIIMS 2003] |
| A. | Cartilagenous bone |
| B. | Dermal bone |
| C. | Spongy bone |
| D. | Sesamoid bone |
| Answer» E. | |
| 152. |
Who recognised first the presence of casparian strips |
| A. | Doffins in 1885 |
| B. | Caspary in 1865 |
| C. | Hofmeister in 1895 |
| D. | Bailey in 1975 |
| Answer» C. Hofmeister in 1895 | |
| 153. |
Read the assertion and reason carefully: Assertion : Flower of racemose inflorescence are pollinated by insects. Reason : In Racemose head infloresence, the florets are arranged in a centripetal fashion. |
| 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 | |
| 154. |
In which of the following phloem parenchyma is absent |
| A. | Maize |
| B. | Sunflower |
| C. | Guava |
| D. | Banyan |
| Answer» B. Sunflower | |
| 155. |
On the basis of origin, meristematic tissues can be classified under how many groups |
| A. | 2 |
| B. | 3 |
| C. | 4 |
| D. | 5 |
| Answer» C. 4 | |
| 156. |
The daughter born to haemophilic father and normal mother could be [AIIMS 1992] |
| A. | Normal |
| B. | Carrier |
| C. | Haemophilic |
| D. | None |
| Answer» C. Haemophilic | |
| 157. |
Which is not a rhizome [Pb. PMT 1997] |
| A. | Colocasia |
| B. | Lotus |
| C. | Ginger |
| D. | Turmeric |
| Answer» B. Lotus | |
| 158. |
Assertion : Mosses are used as pollution indicators. Reason : They absorb metals. |
| 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 | |
| 159. |
World AIDS day is: |
| A. | December 21 |
| B. | December 1 |
| C. | November 1 |
| D. | June 11 |
| Answer» C. November 1 | |
| 160. |
Hepatitis B is transmitted through: |
| A. | Blood transfusion |
| B. | Intimate physical contact |
| C. | Sexual contact |
| D. | All of the above |
| Answer» E. | |
| 161. |
Match column-I with column-II and select the correct answer using the codes given below. Column-I Column-II A. Hepatitis B I. Vitamin E B. Saheli II. 7? April, 1948 C. Normal functioning of reproductive organs III. CDRI, Lucknow D. World Health organisation IV. Detection of antibody antigen E. ELISA technique V. Hepatitis B Virus |
| A. | A-V; B-III; C-I; D-II; E-IV |
| B. | A-V; B-II; C-I; D-III; E-IV |
| C. | A-V; B-III; C-IV; D-II; E-I |
| D. | A-V; B-II; C-IV; D-III; E-I |
| Answer» B. A-V; B-II; C-I; D-III; E-IV | |
| 162. |
Which of the following STDs are not completely curable? |
| A. | Chlamydiasis, gonorrhoea, trichomoniasis |
| B. | Chancroid, syphilis, genital warts |
| C. | AIDS, syphilis, hepatitis B |
| D. | AIDS, genital herpes, hepatitis B |
| Answer» E. | |
| 163. |
Deficiency of vitamin E brings about: |
| A. | scurvy |
| B. | beri-beri |
| C. | impotence |
| D. | delayed blood clotting |
| Answer» D. delayed blood clotting | |
| 164. |
Senescence as an active developmental cellular process in the growth and functioning of a flowering plant, is indicated in: |
| A. | Vessels and tracheid differentiation |
| B. | Leaf abscission |
| C. | Annual plants |
| D. | Floral parts |
| Answer» C. Annual plants | |
| 165. |
Parenchyma cells in between xylem and phloem bundles in roots are called as |
| A. | Conjunctive tissue |
| B. | Complimentary tissue |
| C. | Cambial tissue |
| D. | None of the above |
| Answer» B. Complimentary tissue | |
| 166. |
ATP: (i) Has high energy containing first phosphate bond. (ii) Is produced by oxidative phosphorylation and photophosphorylation. (iii) Acts as energy mediator in the cell. (iv) Has low energy containing second and third phosphate bond. |
| A. | (i),(ii) and (iii) |
| B. | (i) and (ii) |
| C. | (ii) and (iv) |
| D. | (i) and (iii) |
| Answer» C. (ii) and (iv) | |
| 167. |
Chloroplast in Ulothrix is [RPMT 1999; Kerala PMT 2004] |
| A. | Reticulate |
| B. | Cuplike |
| C. | Spiral |
| D. | Girdle shaped |
| Answer» E. | |
| 168. |
Sexual reproduction in Spirogyra is morphologically characterised by [MP PMT 1995; BHU 2002] |
| A. | Oogamy |
| B. | Anisogamy |
| C. | Isogamy |
| D. | Isogamy and oogamy both |
| Answer» D. Isogamy and oogamy both | |
| 169. |
Mucopeptide in cell wall is more in [MP PMT 1999] |
| A. | Gram-positive bacteria |
| B. | Gram-negative bacteria |
| C. | Cyanobacteria |
| D. | Bacteriophage |
| Answer» B. Gram-negative bacteria | |
| 170. |
'Peptidoglycan' is a characteristic constituent of the cell wall of [BHU 1994; MP PMT 1997; AIIMS 1999] |
| A. | Eubacteria and unicellular eukaryotes |
| B. | Bacteria and cyanobacteria |
| C. | Archaebacteria and eukaryotes |
| D. | All members of 'monera' and 'protista' |
| Answer» C. Archaebacteria and eukaryotes | |
| 171. |
One group of neurotransmitter receptors is the metabotropic receptors. Which one of the following statements about metabotropic receptors is false? |
| A. | Both muscanaric and p-adrenergic receptors are metabotropic receptors. |
| B. | Metabotropic receptors are coupled with A proteins. |
| C. | Metabotropic receptors can stimulate gene expression. |
| D. | Muscanaric receptors bind with acetylcholine. |
| Answer» C. Metabotropic receptors can stimulate gene expression. | |
| 172. |
Read the assertion and reason carefully to mark the correct option out of the options given below: Assertion : Smaller the organism higher is the rate of metabolism per gram weight. Reason : The heart rate of a six month old baby is much higher than that of an old person.[AIIMS 2003] |
| 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 | |
| 173. |
The most common type of haemophilia results from the congenital absence of [CPMT 2004] |
| A. | Factor II |
| B. | Factor V |
| C. | Factor VIII |
| D. | Factor XI |
| Answer» D. Factor XI | |
| 174. |
Which one of the following pairs is not correctly matched? (CBSE 2003) |
| A. | Vitamin C Scurvy |
| B. | Vitamin \[{{B}_{2}}\] Pellagra |
| C. | Vitamin \[{{B}_{6}}\] Beri-beri |
| D. | Vitamin \[{{B}_{12}}\] Pernicious anaemia |
| Answer» D. Vitamin \[{{B}_{12}}\] Pernicious anaemia | |
| 175. |
Intine of pollen grain is made of: |
| A. | Callose |
| B. | Pecto-cellulose |
| C. | Cellulose |
| D. | Fat-like Sporopollenin |
| Answer» C. Cellulose | |
| 176. |
Abundant occurrence of fossilised pollen grains is due to resistant: |
| A. | Lignocellulose |
| B. | Sporopollenin |
| C. | Pectocellulose |
| D. | Pectolignin |
| Answer» B. Sporopollenin | |
| 177. |
Drosophila flies with XXY genotype are females but in case of humans, such individuals are abnormal males (Klinefelter's syndrome). This indicates that: |
| A. | The Y chromosome has no role in sex determination. |
| B. | In Drosophila, the Y chromosome is essential for sex determination. |
| C. | The Y chromosome is male determining in humans. |
| D. | The Y chromosome is female determining in Drosophila. |
| Answer» D. The Y chromosome is female determining in Drosophila. | |
| 178. |
Which of the following statements regarding: crossing-over is incorrect? |
| A. | Crossing-over disrupts the linkage between genes on the same chromosome. |
| B. | Crossing-over disrupts the linkage between genes on different chromosomes. |
| C. | Crossing-over produces new genetic combinations. |
| D. | Crossing-over produces non-parental chromosomes. |
| Answer» C. Crossing-over produces new genetic combinations. | |
| 179. |
Read the assertion and reason carefully: Assertion : In grasses and cereals, intercalary meristems are not present. Reason : Intercalary meristems form permanent tissues. |
| 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. | |
| 180. |
Alkalaemia is |
| A. | Blood \[pH\]less than 7 |
| B. | Blood \[pH\] is 7.3 - 7.4 |
| C. | Blood \[pH\]more than 7.45 |
| D. | Removal of inorganic salts from plasma |
| Answer» D. Removal of inorganic salts from plasma | |
| 181. |
Some of the enzymes, which are associated in converting fats into carbohydrates, are present in [CBSE PMT 1999] |
| A. | Liposomes |
| B. | Golgi bodies |
| C. | Microsome |
| D. | Glyoxysomes |
| Answer» E. | |
| 182. |
Match Column-I with Column-II and select the correct answer using the codes given below: Column-I Column-II A. C. Darwin and F. Darwin I. Cytokinin B. Miller and Skoog II. ABA C. Addicott et. al. III. \[{{C}_{2}}{{H}_{4}}\] D. Kurosawa IV. Auxin E. V. GA |
| A. | A-IV; B-I; C-II; D-V |
| B. | A-IV; B-I; C-V; D-II |
| C. | A-III; B-I; C-II; D-IV |
| D. | A-V; B-IV; C-I; D-III |
| Answer» B. A-IV; B-I; C-V; D-II | |
| 183. |
Organs of Ruffini are receptors of: |
| A. | Cold |
| B. | Pressure |
| C. | Heat |
| D. | Touch |
| Answer» D. Touch | |
| 184. |
A particular disease of the nervous system specifically involves the\[C{{a}^{2+}}\] ion channels at the chemical synapses of motor neurons where neurotransmitter is stored and released. In other words, this disease affects the |
| A. | Axon terminals of the presynaptic cell and the release of acetylcholine. |
| B. | Axon terminals of the postsynaptic cell and the release of \[{{K}^{+}}\] ions. |
| C. | Electrical synapses. |
| D. | Axon terminals of the presynaptic cell and the release of \[{{K}^{+}}\] ions. |
| Answer» B. Axon terminals of the postsynaptic cell and the release of \[{{K}^{+}}\] ions. | |
| 185. |
Family Fabaceae belongs to series [APMEE 1996] |
| A. | Inferae |
| B. | Thalamiflorae |
| C. | Calyciflorae |
| D. | Disciflorae |
| Answer» D. Disciflorae | |
| 186. |
Beet root (Beta vulgaris) belongs to family [Orissa JEE 2004] |
| A. | Apocynaceae |
| B. | Cruciferae |
| C. | Chenopodiaceae |
| D. | Asclepiadaceae |
| Answer» D. Asclepiadaceae | |
| 187. |
Which of the following statements is/are correct?(i) In Equisetum, the female gametophyte is retained on the parent sporophyte.(ii) In Ginkgo, male gametophyte is not independent.(iii) The sporophyte in Riccia is more developed than that in Polytrichum.(iv) Sexual reproduction in Volvox is isogamous. |
| A. | Two |
| B. | Three |
| C. | Four |
| D. | One |
| Answer» B. Three | |
| 188. |
Assertion : In Pinus, pollination is anemophilous Reason : Pinus bear winged pollen grains. |
| 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 | |
| 189. |
The maximum expansion rate of a population under the best conditions is referred to as ___. There are abundant resources that last forever and no limits on growth. |
| A. | biotic potential |
| B. | cohort |
| C. | mortality rate |
| D. | biome |
| Answer» B. cohort | |
| 190. |
Casuarina equisetifolia is a: |
| A. | Mesophytes |
| B. | Xerophyte |
| C. | Halophyte |
| D. | Forest epiphyte |
| Answer» C. Halophyte | |
| 191. |
Number of fertilised eggs in ootheca of cockroach is: |
| A. | 16 pairs in two rows |
| B. | 16 in two rows |
| C. | 10 in one rows |
| D. | 8 in two rows |
| Answer» C. 10 in one rows | |
| 192. |
How many facets are present in a parenchyma cell |
| A. | 20 |
| B. | 14 |
| C. | 10 |
| D. | 7 |
| Answer» C. 10 | |
| 193. |
In snakes, eye lids are: |
| A. | Immovable |
| B. | Movable |
| C. | Absent |
| D. | All of these |
| Answer» D. All of these | |
| 194. |
In mammalian eye, the power of accommodation is due to: |
| A. | Regulating light through iris |
| B. | Focussing by cornea |
| C. | Changing the focal length of eye lens by ciliary body |
| D. | Changing the diameter of pupil |
| Answer» D. Changing the diameter of pupil | |
| 195. |
Depolarisation of nerve impulse involves: |
| A. | Entry of \[N{{a}^{+}}\] only |
| B. | Entry of \[{{K}^{+}}\] only |
| C. | Entry of \[N{{a}^{+}}\] and exit of \[{{K}^{+}}\] |
| D. | Entry of \[{{K}^{+}}\] and exit of \[N{{a}^{+}}\] |
| Answer» D. Entry of \[{{K}^{+}}\] and exit of \[N{{a}^{+}}\] | |
| 196. |
Haemophilia is mentioned as a trait carried by the mother and passed to her sons. What is the pattern of inheritance for this trait? |
| A. | Haemophilia is an allele carried on one of the mother's autosomal chromosomes. |
| B. | Haemophilia is an allele carried on the Y chromosome because more males have this genetic disorder than females. |
| C. | Haemophilia is an allele carried on the X chromosome and can be directly inherited by the son from the father or the mother. |
| D. | Haemophilia is carried on the X chromosome and can only be inherited by the son if the mother is a carrier. |
| Answer» E. | |
| 197. |
Gynandromorphs are animals having: |
| A. | same sex in all cells of the body. |
| B. | different sexes in all cells of the body. |
| C. | same sex in different cells of the body. |
| D. | different sexes in different cells of the body. |
| Answer» E. | |
| 198. |
Which of the following is an example of sex- linked inheritance? |
| A. | Anaemia |
| B. | Cretinism |
| C. | Night-blindness |
| D. | Colour-blindness |
| Answer» E. | |
| 199. |
Santalum album is [BHU 1982; JIPMER 1987; DPMT 2002] |
| A. | Partial root parasite |
| B. | Partial stem parasite |
| C. | Total stem parasite |
| D. | Total root parasite |
| Answer» B. Partial stem parasite | |
| 200. |
The alkaloid from Colchicum automnale of Liliaceae induces: |
| A. | Sterility |
| B. | Dormancy |
| C. | Cell division |
| D. | Polyploidy |
| Answer» E. | |