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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.
| 13151. |
ATP is synthesized in which part of mitochondria [BHU 2003] |
| A. | \[{{F}_{1}}\] |
| B. | \[{{F}_{0}}\] |
| C. | Cristae |
| D. | Inner membrane of mitochondria |
| Answer» B. \[{{F}_{0}}\] | |
| 13152. |
Which intermediate compound is involved in the synthesis of amino acids |
| A. | Malic acid |
| B. | Citric acid |
| C. | \[\alpha -\]ketogluteric acid |
| D. | Isocitric acid |
| Answer» D. Isocitric acid | |
| 13153. |
ATP synthesis occurs on the [AIIMS 1984] |
| A. | Outer membrane of mitochondrion |
| B. | Inner membrane of mitochondrion |
| C. | Matrix |
| D. | None of the above |
| Answer» C. Matrix | |
| 13154. |
Read the following give statements and mark the option that are correct statements. (i) MTP was legalized in 1971. (ii) Inability to conceive or produce children even after 2 years of protected sexual cohabitation is called infertility. (iii) Surgical method of contraception prevents gamete formation. (iv) MTPs are relatively safe up to 3 weeks of pregnancy. |
| A. | (i) and (iv) |
| B. | (ii) and (iii) |
| C. | (iii) and (iv) |
| D. | (i) and (iii) |
| Answer» B. (ii) and (iii) | |
| 13155. |
Identify the correct statemnets regarding diaphragm as contraceptive device from the given options. (i) They act as physical barrier for sperm entry. (ii) They are placed to cover the cervical region during coitus. (iii) They are introduced into the uterus to prevent implantation. (iv) They act as spermicidal agents to increase their contraceptive effectiveness. |
| A. | (i), (ii) only |
| B. | (i), (iv) only |
| C. | (ii), (iii), only |
| D. | (iii), (iv) only |
| Answer» B. (i), (iv) only | |
| 13156. |
Identify the correct match from the given option. |
| A. | Non Medicated IUDs - Multiload 375. |
| B. | Saheli - Contains a steroidal preparation. |
| C. | Lactational amenorrhea - Presence of menstruation. |
| D. | Diaphragms, cervical caps, vaults ? Cover the cervix after the coitus. |
| Answer» C. Lactational amenorrhea - Presence of menstruation. | |
| 13157. |
Contraceptive oral pills help in birth control by: |
| A. | Killing the sperms in uterus. |
| B. | Forming barriers between sperms and ova. |
| C. | Preventing ovulation. |
| D. | Killing the ova. |
| Answer» D. Killing the ova. | |
| 13158. |
Copper-T is a device that prevents: |
| A. | Implantation of blastocyst |
| B. | Ovulation |
| C. | Fertilisation |
| D. | Egg maturation |
| Answer» B. Ovulation | |
| 13159. |
Which of the following ions plays an effective role in the activity of IUDs? |
| A. | Iron |
| B. | Zinc |
| C. | Copper |
| D. | Ammonium |
| Answer» D. Ammonium | |
| 13160. |
Non-gonococcal urethritis is caused by: |
| A. | Neisseria gonorrhoeae |
| B. | Chlamydia trachomatis |
| C. | Treponema pallidum |
| D. | E.coli |
| Answer» C. Treponema pallidum | |
| 13161. |
Identify the false statement regarding the techniques of contraception. (i) Tubectomy and vasectomy show many side effects. (ii) Purpose of tubectomy is to prevent formation of ova. (iii) The most important component of the oral contraceptive pills is progesterone. (iv) Contraceptive oral pills help in birth control by preventing ovulation. |
| A. | (i), (ii) and (iii) |
| B. | (i) and (ii) |
| C. | (iii), (iv) and (ii) |
| D. | (iv) and (ii) |
| Answer» C. (iii), (iv) and (ii) | |
| 13162. |
Which of the following statement is not correct about syphilis? |
| A. | Primary stage of disease shows the appearance of chancre on genitalia and lips. |
| B. | In quaternary stage of disease, thick pus is discharged from urinogenital organ. |
| C. | Secondary stage of disease shows the appearance of multiple lesions on mucous membrane of lips, mouth and genitalia. |
| D. | Tertiary stage of disease shows the appearance of gumma on the skin. |
| Answer» C. Secondary stage of disease shows the appearance of multiple lesions on mucous membrane of lips, mouth and genitalia. | |
| 13163. |
Which of the following is a method for birth control? |
| A. | ITJDs |
| B. | GIFT |
| C. | HTF |
| D. | IVF-ET |
| Answer» B. GIFT | |
| 13164. |
Which one of the following is tested by the technique of amniocentesis? |
| A. | Biochemical abnormalities in the foetus. |
| B. | Errors of metabolism in the foetus. |
| C. | Chromosomal abnormalities in the foetus. |
| D. | All of the above |
| Answer» D. All of the above | |
| 13165. |
The chemical method of contraception includes: |
| A. | Jellies only |
| B. | Creams and foams only |
| C. | Oral contraceptives only |
| D. | All of the above |
| Answer» E. | |
| 13166. |
Identify the incorrect statements and select the correct option. (i) Birth control pills are likely to cause cardiovascular problems. (ii) A woman who substitutes or takes the place of the real mother to nurse the embryo is called surrogate mother. (iii) Numerous children have been produced by in vitro fertilisation but with some abnormalities. (iv) Woman plays a key role in the continuity of the family and human species. (v) Foetal sex determination test should not be banned. |
| A. | (i) and (ii) |
| B. | (ii) and (iv) |
| C. | (iii) and (v) |
| D. | None of these |
| Answer» D. None of these | |
| 13167. |
Select the correct match of the techniques given in column-I with its feature given in column-II. Column-I Column-II A. IUT I. Copper-T B. Birth control II. Agent to kill spermatozoa C. Spermicides III. VD or RTI D. STD IV. To help infertile couple |
| A. | A-IV; B-III; C-I; D-II |
| B. | A-IV; B-III; C-II; D-I |
| C. | A-II; B-IV; C-I; D-III |
| D. | A-IV; B-I; C-II; D-III |
| Answer» E. | |
| 13168. |
Which of the following statements are correct for an ideal contraceptive? (i) It should be user-friendly. (ii) It should be easily available. (iii) It should be ineffective and reversible with least side effects. (iv) It should be effective and reversible with least side effects. (v) It should interfere with the sexual act of the user. |
| A. | All of these |
| B. | (i), (ii) and (iii) |
| C. | (i), (ii) and (iv) |
| D. | (i), (ii), (iv) and (v) |
| Answer» D. (i), (ii), (iv) and (v) | |
| 13169. |
Foetal sex can be determined by examining cells from the amniotic fluid by looking |
| A. | Barr bodies |
| B. | Autosomes |
| C. | Chiasmata |
| D. | Kinetochore |
| Answer» B. Autosomes | |
| 13170. |
Intensely lactating mothers do not generally conceive due to the: |
| A. | Suppression of gonadotropins. |
| B. | Hypersecretion of gonadotropins. |
| C. | Suppression of gametic transport. |
| D. | Suppression of fertilization. |
| Answer» B. Hypersecretion of gonadotropins. | |
| 13171. |
Test-tube babies are produced in a process when: |
| A. | Fertilizing egg is removed from the body of the female and fertilized with the husband's sperm outside in vitro culture and then the zygote is transferred back to mother's uterus. |
| B. | External fertilization and development in vitro culture till 32 cell stage before putting the embryo back into mother's uterus. |
| C. | Complete development of a baby take place in vitro. |
| D. | Development upto 32 cell stage of embryo takes place and its transplantation in the uterus of a surrogate mother occurs. |
| Answer» C. Complete development of a baby take place in vitro. | |
| 13172. |
Apomixis in plant means development of a plant: |
| A. | From root cuttings. |
| B. | Without fusion of gametes. |
| C. | From cuttings of stem. |
| D. | From fusion of gametes. |
| Answer» C. From cuttings of stem. | |
| 13173. |
A small portion of cane-sugar stem between the two successive nodes is cut off and sown in the soil normally. New plants will be: |
| A. | formed normally |
| B. | not formed |
| C. | Without juice |
| D. | without nodes |
| Answer» C. Without juice | |
| 13174. |
The formation of gametophyte from the sporophyte (without meiosis) is called: |
| A. | Apospory |
| B. | Apogamy |
| C. | Agamospermy |
| D. | None of these |
| Answer» B. Apogamy | |
| 13175. |
The given figures P (plant Chard) and Q (Earthworm) have label 1, 2, 3 and 4 as their reproductive organs. Select the option which correctly identifies male reproductive organs of the two organisms. |
| A. | 1 and 2 |
| B. | 2 and 3 |
| C. | 1 and 3 |
| D. | 2 and 4 |
| Answer» C. 1 and 3 | |
| 13176. |
Which of the following statements about animals that utilise external fertilisation is incorrect? |
| A. | They are divided equally between terrestrial and aquatic species. |
| B. | Many produce large numbers of gametes to ensure successful reproduction. |
| C. | The behaviours associated with mating are often highly synchronised. |
| D. | The probability of any one egg being fertilized and developing into an adult can be low. |
| Answer» B. Many produce large numbers of gametes to ensure successful reproduction. | |
| 13177. |
Select the incorrect statements. |
| A. | Cucurbits and coconuts are monoecious plants. |
| B. | Papayas and date palms are dioecious plants. |
| C. | Leeches and tapeworms are bisexual animals. |
| D. | Sponges and coelenterates are unisexual animals. |
| Answer» E. | |
| 13178. |
Which of the labelled parts (1 and 2) in the transverse section of pea plant is/are diploid? |
| A. | 1 |
| B. | 2 |
| C. | Both [a] and [b] |
| D. | None of these |
| Answer» D. None of these | |
| 13179. |
Offspring formed by sexual reproduction exhibits more variation than those formed by asexual reproduction because: |
| A. | Sexual reproduction is a lengthy process. |
| B. | Genetic material comes from two parents of different species. |
| C. | Genetic material comes from two parents of same species |
| D. | Greater amount of DNA is involved in sexual reproduction. |
| Answer» D. Greater amount of DNA is involved in sexual reproduction. | |
| 13180. |
Agamospermous embryo sac develops from: |
| A. | Pollen |
| B. | Egg |
| C. | Ovum |
| D. | Megaspore mother cell |
| Answer» E. | |
| 13181. |
Meiocytes is observed in all except: |
| A. | Human egg |
| B. | Blue-green algae |
| C. | Equisetum |
| D. | Dicot plant |
| Answer» C. Equisetum | |
| 13182. |
Some organisms are capable of asexual or sexual reproduction. Under favoura conditions, reproduction proceeds asexually. When conditions become more stressful eproduction switches to a sexual mode. Why? |
| A. | Sexual reproduction is simple and more rapid allowing larger numbers of off springs to be produced. |
| B. | Sexual reproduction requires two separate individuals, who can mutually provide nutrient support during stress. |
| C. | Sexual reproduction produces individuals with new combinations of recombined chromosomes increasing diversity. |
| D. | Asexual reproduction requires more energy. |
| Answer» D. Asexual reproduction requires more energy. | |
| 13183. |
If cotyledons are brought above the soil, the germination is: |
| A. | Hypogeal |
| B. | Epigeal |
| C. | Vivipary |
| D. | None of these |
| Answer» C. Vivipary | |
| 13184. |
During spermatogenesis, a single male germ cell produces ___ sperm cell(s). |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» E. | |
| 13185. |
Which of the following definitions about oviparity is false? |
| A. | Only birds and reptiles are oviparous. |
| B. | The large amount of yolk provides the nutrients for the developing embryo. |
| C. | The shell protects the egg from dehydration. |
| D. | Both oxygen and carbon dioxide can diffuse through the shell. |
| Answer» B. The large amount of yolk provides the nutrients for the developing embryo. | |
| 13186. |
Which is the most common method of reproduction in majority of fungi and bacteria? |
| A. | Binary fission |
| B. | Multiple fission |
| C. | Budding |
| D. | Spore formation |
| Answer» E. | |
| 13187. |
Match the following columns and choose the correct option. Column-I Column-II A. Clone I. Agamospermy B. Plant apomixes II. Scion C. Grafting III. Callus D. Tissue culture IV. Flower E. In florescence V. Ramet |
| A. | A-V; B- I; C-II; D-III; E-IV |
| B. | A-IV; B-I; C-III; D-II; E-IV |
| C. | A-I; B-II; C-III; D-IV; E-V |
| D. | A-V; B-II; C-III; D-IV; E-I |
| Answer» B. A-IV; B-I; C-III; D-II; E-IV | |
| 13188. |
Artificial induction of roots on stems before it is separated from the parent plant for propagation is called: |
| A. | Root-stem joint |
| B. | Plant tissue culture |
| C. | Grafting |
| D. | Layering |
| Answer» E. | |
| 13189. |
Vegetative reproduction in Cycas occurs by: |
| A. | Sporophyll |
| B. | Bulbils |
| C. | Scaly leaves |
| D. | Fragmentation |
| Answer» C. Scaly leaves | |
| 13190. |
Which one of the following is a nut fruit? |
| A. | Betel nut |
| B. | Groundnut |
| C. | Cashew nut |
| D. | Walnut |
| Answer» D. Walnut | |
| 13191. |
In Onion, the edible swollen portion is: |
| A. | Aerial stem |
| B. | Underground stem |
| C. | Internodes |
| D. | Leaf bases |
| Answer» E. | |
| 13192. |
Sweet potato is a modification of: |
| A. | Stem |
| B. | Adventitious root |
| C. | Hypocotyl |
| D. | Flowering axis |
| Answer» C. Hypocotyl | |
| 13193. |
In some species parthenogenesis may alternate with sexual reproduction this process is called |
| A. | Complete parthenogenesis |
| B. | Incomplete or cyclic parthenogenesis |
| C. | Both the above |
| D. | None of the above |
| Answer» C. Both the above | |
| 13194. |
The asexual process replaced by the sexual method is known as [CPMT 1982] |
| A. | Semigamy |
| B. | Amphimixis |
| C. | Apospory |
| D. | Apomixis |
| Answer» E. | |
| 13195. |
Gemmule formation in sponges is helpful in [AIIMS 2001] |
| A. | Parthenogenesis |
| B. | Sexual reproduction |
| C. | Only dissemination |
| D. | Asexual reproduction |
| Answer» E. | |
| 13196. |
Placenta produced which hormone [Haryana PMT 2005] |
| A. | ACTH |
| B. | Progesterone |
| C. | GH |
| D. | Gastrin |
| Answer» C. GH | |
| 13197. |
The extra structure that provides nutrition to the embryo is [BHU 2005] |
| A. | Umbilicus |
| B. | Amnion |
| C. | Chorion |
| D. | Placenta |
| Answer» E. | |
| 13198. |
Which of the following structure is lacking from the placenta |
| A. | Arteries |
| B. | Veins |
| C. | Smooth muscles |
| D. | Nerves |
| Answer» E. | |
| 13199. |
The animals in which complete embryo develops in the mother's body through placenta are |
| A. | Oviparous |
| B. | Viviparous |
| C. | Ovo-viviparous |
| D. | Herbivorous |
| Answer» C. Ovo-viviparous | |
| 13200. |
In mammals growing oocytes are surrounded by special nutritive cells called |
| A. | Follicle cells |
| B. | Nurse cells |
| C. | [a] and [b] both |
| D. | None of the above |
| Answer» B. Nurse cells | |