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MCQOPTIONS
This section includes 5751 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.
| 1351. |
Sensitivity of leaves in Mimosa, depends on which factor ? |
| A. | Temperature |
| B. | Light |
| C. | Water |
| D. | Touch |
| Answer» E. | |
| 1352. |
What is the type of dormancy in which embryo do not differentiate into various tissue at the time offruit maturation ? |
| A. | Internal dormancy |
| B. | Physiological dormancy |
| C. | External dormancy |
| D. | Mixed dormancy |
| Answer» D. Mixed dormancy | |
| 1353. |
Which type of dormancy, inhibits embryo growth and germination in seed ? |
| A. | Endogenous dormancy |
| B. | Physiological dormancy |
| C. | External dormancy |
| D. | Mixed dormancy |
| Answer» C. External dormancy | |
| 1354. |
Which type of dormancy is found when seed is impermeable to water or gaseous exchange ? |
| A. | Physical dormancy |
| B. | Mechanical dormancy |
| C. | External dormancy |
| D. | Chemical dormancy |
| Answer» C. External dormancy | |
| 1355. |
In which type of dormancy, due to hardness of seed coats or integuments, embryo could not expandduring germination ? |
| A. | Physical dormancy |
| B. | Mechanical dormancy |
| C. | External dormancy |
| D. | Chemical dormancy |
| Answer» C. External dormancy | |
| 1356. |
Avvenge the following intne uterine devices(IUDS) in chronological order, non medical IUDS, copper IUDS and hormonal IUDS. |
| A. | First, Secod, Third |
| B. | Second, First, Third |
| C. | Third, First, Second |
| D. | First, Second, Third |
| Answer» B. Second, First, Third | |
| 1357. |
Which are the permenent methods of family planning ? |
| A. | Vasectomy, Tubectomy |
| B. | Condom for female, condom for male |
| C. | Copper T and pills. |
| D. | Vasectomy, copper T |
| Answer» B. Condom for female, condom for male | |
| 1358. |
During physiological and physical condition some changes observed in seed, is knows as ...... |
| A. | Exogenous dormancy |
| B. | Endogenous dormancy |
| C. | Combinational dormancy |
| D. | Secondary dormancy |
| Answer» D. Secondary dormancy | |
| 1359. |
Which of the following is not a variation of diaphragm ? |
| A. | Conical cap |
| B. | Umbrella cap |
| C. | Vinule cap |
| D. | a and b both |
| Answer» D. a and b both | |
| 1360. |
From which day of menstrual cycle the hormonal contracaptive pills should be started ? |
| A. | 5th day |
| B. | 7th day |
| C. | 1st day |
| D. | 2nd day |
| Answer» B. 7th day | |
| 1361. |
Which is not related with reference to hormonal contraceptive pills ? |
| A. | Prevent ovum to release from the ovary |
| B. | Thicken the cervical mucous. |
| C. | Inhibites sperm penetration. |
| D. | Partial activation of cervical mucous |
| Answer» D. Partial activation of cervical mucous | |
| 1362. |
This hormone induces growth of root but inhibits growth of ....... |
| A. | Apical bud |
| B. | Unfertilized fruit developement |
| C. | Lateral buds |
| D. | Root |
| Answer» D. Root | |
| 1363. |
Which of the following statement about ABA is inappropriate ? |
| A. | Induces ripening of fruit |
| B. | Inhibits seed germination |
| C. | Induces dormancy of bud |
| D. | Closes stomata |
| Answer» B. Inhibits seed germination | |
| 1364. |
From where gibberrelin was isolated for the first time ? |
| A. | Penicillium |
| B. | Asparagus |
| C. | Mucor |
| D. | Gibberella |
| Answer» E. | |
| 1365. |
Which hormone affects the growth of plant in adverse climatic / environmental condition ? |
| A. | Abscisic acid |
| B. | Ethylene |
| C. | NAA |
| D. | 2-4, D |
| Answer» B. Ethylene | |
| 1366. |
Which of the following is responsible for seed dormancy ? |
| A. | Abscissic acid |
| B. | Ethylene |
| C. | Gibberrelin |
| D. | Auxin |
| Answer» B. Ethylene | |
| 1367. |
Which is the specific use of synthetic auxin in higher concentration ? |
| A. | Weedicide |
| B. | Inhibits growth of lateral buds |
| C. | Inhibits initial process of root formation |
| D. | Regulates cell elongation |
| Answer» B. Inhibits growth of lateral buds | |
| 1368. |
Which of the following statement is true for abscisic acid ? |
| A. | Inhibits transcription of gene |
| B. | Opens stomata |
| C. | Reduces senescence |
| D. | Acts as weedicide |
| Answer» B. Opens stomata | |
| 1369. |
What is indicated by any of the developing plant if it increase / hyperactivity in lateral buds ? |
| A. | It obtains more light |
| B. | Cytokinin decreases |
| C. | It stores more food |
| D. | Auxin decreases |
| Answer» E. | |
| 1370. |
Which hormone inhibits formation of new cells ? |
| A. | Abscisic acid |
| B. | Kinetin |
| C. | Gibberrelic acid |
| D. | Indol-butaric acid |
| Answer» B. Kinetin | |
| 1371. |
Name the hormone responsible for activity of chlorophyll in leaves. |
| A. | Cytokinin |
| B. | Ethylene |
| C. | Gibberrelin |
| D. | ABA |
| Answer» B. Ethylene | |
| 1372. |
Which of the following is mismatched statement for effect of auxin ? |
| A. | It inhibits lateral growth |
| B. | It induces stem elongation in plant |
| C. | It induces cell division |
| D. | It helps in further elongation of some regions |
| Answer» E. | |
| 1373. |
Which hormore is essential for initial growth of root ? |
| A. | IBA |
| B. | GA |
| C. | ABA |
| D. | Kinetin |
| Answer» B. GA | |
| 1374. |
By which physiological process water enters into seed coats of seed ? |
| A. | Endosmosi |
| B. | Diffusion |
| C. | Plasmolysis |
| D. | Imbibition |
| Answer» E. | |
| 1375. |
Which of the following is simple, volatile hormone ? |
| A. | Ethylene |
| B. | ABA |
| C. | IAA |
| D. | Cytokinin |
| Answer» B. ABA | |
| 1376. |
Which hormone inhibits senescence of vegetative parts and plants ? |
| A. | Auxin |
| B. | Cytokinin |
| C. | Gibberrelin |
| D. | Abscisic acid |
| Answer» C. Gibberrelin | |
| 1377. |
Drooping of fruit, after fruit maturation (ripening) shows ........ . |
| A. | Increase in amount of auxin |
| B. | Decreases in amount of auxin |
| C. | Reduces in amount of ABA |
| D. | Increase gibberrelic acid |
| Answer» C. Reduces in amount of ABA | |
| 1378. |
Which hormone is absent in dormnant seed ? |
| A. | ABA |
| B. | Auxin |
| C. | GA |
| D. | Ethylene |
| Answer» D. Ethylene | |
| 1379. |
Which is required to inhibit germination of food storing part of potato ? |
| A. | ABA |
| B. | IAA |
| C. | IBA |
| D. | GA |
| Answer» B. IAA | |
| 1380. |
Which of the following organic chemical is synthetic ? |
| A. | 2-4-D |
| B. | IAA |
| C. | GA |
| D. | IBA |
| Answer» B. IAA | |
| 1381. |
Garland of green leaves remain green, by treatment of which organic chemical ? |
| A. | Cytokinin |
| B. | Auxin |
| C. | Ethylene |
| D. | Gibberrelin |
| Answer» B. Auxin | |
| 1382. |
From the following sentences which one is appropriate for pneumoia ? |
| A. | P,Q,R,S all are improper |
| B. | P,Q,R,S proper & S is improper |
| C. | P,Q are proper & R & S are improper |
| D. | P,Q,R,S all are proper |
| Answer» E. | |
| 1383. |
Which of the following hormone is responsible for cell division ? |
| A. | GA |
| B. | IAA |
| C. | Cytokinin |
| D. | Abscisic acid |
| Answer» D. Abscisic acid | |
| 1384. |
Which is incorrect option for cytokinin ? |
| A. | Retards senescence |
| B. | Secreted in the region of active cell division |
| C. | Increases dominance of apical bud |
| D. | Stimulates cell division |
| Answer» D. Stimulates cell division | |
| 1385. |
Which of the following effect of gibberrelin is observed in plant ? |
| A. | Long plant shorten |
| B. | Dwarf plant grows in longitudinal axis |
| C. | Induces formation of root system |
| D. | Yellowing of young leaves |
| Answer» C. Induces formation of root system | |
| 1386. |
Which is natural growth inhibitor or senescence inducing hormone ? |
| A. | IAA |
| B. | ABA |
| C. | NAA |
| D. | GA |
| Answer» C. NAA | |
| 1387. |
Which of the following phenomenon is regulated by abscisic acid ? |
| A. | Shoot elongation |
| B. | Origin of cell wall and cell elongation |
| C. | Opening and closing of stomata |
| D. | Abscission of leaf and dormancy |
| Answer» D. Abscission of leaf and dormancy | |
| 1388. |
Give the location for storage of erythrocytes |
| A. | Pancrea |
| B. | Spleen |
| C. | Liver |
| D. | Stomach |
| Answer» C. Liver | |
| 1389. |
_________ is an unclear byproduct of heroine ? |
| A. | Smack |
| B. | Delta-9-THC |
| C. | LSD |
| D. | Cannabinoids |
| Answer» B. Delta-9-THC | |
| 1390. |
What is called disease according to Oxford english dictionary ? |
| A. | The bad performance of body or body parts with some particular symptom. |
| B. | Body or body's parts that obstructs the functioning of them |
| C. | Any physical or actional change from normal condition |
| D. | Disease spread from one person to another |
| Answer» C. Any physical or actional change from normal condition | |
| 1391. |
What is formed during Innate immunity ? |
| A. | Body prepare Antibodies against antigen |
| B. | Antibodies are present in body from birth |
| C. | Prepare antibodies are introduced into body. |
| D. | All of the given. |
| Answer» C. Prepare antibodies are introduced into body. | |
| 1392. |
Which one is matched with LSD ? |
| A. | Fungi |
| B. | Bacteria |
| C. | Virus |
| D. | Protozon |
| Answer» B. Bacteria | |
| 1393. |
Which is the hereditary material in retro virus ? |
| A. | DNA |
| B. | RNA |
| C. | Lipoprotein |
| D. | Vitamin |
| Answer» C. Lipoprotein | |
| 1394. |
F2 generation is produced as a result of |
| A. | Crossing F1 individuals with dominant parent |
| B. | Crossing F1 individuals with recessive parent |
| C. | Crossing one of the parental individual with dominant individual. |
| D. | Crossing F1 individuals amongst them selves. |
| E. | cessive |
| Answer» E. cessive | |
| 1395. |
Which statement is incorrect about linkage ? |
| A. | It helps in maintaining the valuable traits of new varieties. |
| B. | It helps in forming new recombinants. |
| C. | Knowledge of linkage helps the breeder to combine all desirable traits in a single variety. |
| D. | It helps in locating genes on chromosome. |
| E. | cessive |
| Answer» D. It helps in locating genes on chromosome. | |
| 1396. |
what is called pleiotropism ? |
| A. | Phenomenon of multiple effect of a simple gene |
| B. | Phenomenon of multiple effect of multiple genes |
| C. | Phenomenon of multiple effect of multiple alleles |
| D. | all of the above |
| E. | cessive |
| Answer» B. Phenomenon of multiple effect of multiple genes | |
| 1397. |
Muliple alleles are present |
| A. | in different chromosomes |
| B. | at different loci on chromosomes |
| C. | at the same locus on homologous chromosome |
| D. | at the non homologous chromosome |
| E. | cessive |
| Answer» D. at the non homologous chromosome | |
| 1398. |
Crossing over during meiosis occurs between |
| A. | sister chromatids |
| B. | Non sister chromatids |
| C. | Centromeres |
| D. | Non homologous chromosomes |
| E. | cessive |
| Answer» C. Centromeres | |
| 1399. |
Genetic balance theory for sex determination in Drosophila was proposed by |
| A. | Prof. R. P. Roy |
| B. | H. E. Warmbe |
| C. | C.B. Bridges |
| D. | Mc. Chang |
| E. | cessive |
| Answer» E. cessive | |
| 1400. |
Incomplete linkage in Drosophila produces off springs with parental and non-parental combinations.State the percentage of non parental combination of Drosophila. |
| A. | 83% |
| B. | 17 % |
| C. | 15 % |
| D. | 85 % |
| E. | cessive |
| Answer» C. 15 % | |