MCQOPTIONS
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MCQOPTIONS
This section includes 1275 Mcqs, each offering curated multiple-choice questions to sharpen your Biology Mcqs knowledge and support exam preparation. Choose a topic below to get started.
| 351. |
The Science of growing terrestrial plants in an aerated solution is_________? |
| A. | Hydrodynamics |
| B. | Hydroponics |
| C. | Hydrotonics |
| D. | None of them |
| Answer» C. Hydrotonics | |
| 352. |
Various tissue types combine to make up__________? |
| A. | Cells |
| B. | Organs |
| C. | Organ System |
| D. | Organelles |
| Answer» C. Organ System | |
| 353. |
Two or more populations of different species living and interacting in the same area form |
| A. | Biosphere |
| B. | Community |
| C. | Population System |
| D. | Ecosystem |
| E. | Species |
| Answer» C. Population System | |
| 354. |
Oxygen accounts for ____ % of totals human body mass? |
| A. | 65% |
| B. | 18% |
| C. | 10% |
| D. | 3% |
| Answer» B. 18% | |
| 355. |
Which of the following is an example of “molecule”? |
| A. | Chloroplast |
| B. | A Nerve Cell |
| C. | DNA |
| D. | Hydrogen |
| Answer» D. Hydrogen | |
| 356. |
Which one of them is a micro-molecule? |
| A. | Polysaccharide |
| B. | Protein |
| C. | Hemoglobin |
| D. | ATP |
| Answer» E. | |
| 357. |
The branch of Biology which deals with the use of data and techniques of engineering & technology concerning living organisms is: |
| A. | Human Biology |
| B. | Environmental Biology |
| C. | Genetics |
| D. | Bio-technology |
| Answer» E. | |
| 358. |
The atoms of different elements combine with each other through ionic or covalent bonding to produce compounds this stable form is called: |
| A. | An organ |
| B. | A molecule |
| C. | Tissue |
| D. | Both a and c |
| Answer» C. Tissue | |
| 359. |
Those bacteria which are fully dependent upon their host for nutrition are called__________? |
| A. | Heterotrophic bacteria |
| B. | Chemosynthetic bacteria |
| C. | Saprophytic bacteria |
| D. | Parasitic bacteria |
| Answer» E. | |
| 360. |
Which of the following structure is not present in all the bacteria_____________? |
| A. | Cell membrane |
| B. | Chromatin bodies |
| C. | Ribosomes |
| D. | Capsule |
| Answer» E. | |
| 361. |
Approximately _____ species of bacteria are known to cause diseases in humans. |
| A. | 100 |
| B. | 200 |
| C. | 300 |
| D. | 400 |
| Answer» C. 300 | |
| 362. |
Nitrifying bacteria are the examples of___________? |
| A. | Hetrotrophic bacteria |
| B. | Chemosynthetic bacteria |
| C. | Saprophytic bacteria |
| D. | Parasitic bacteria |
| Answer» C. Saprophytic bacteria | |
| 363. |
Ultra Microscopic viruses are the main cause of__________? |
| A. | Malaria |
| B. | Measles |
| C. | Mumps |
| D. | Cholera |
| Answer» D. Cholera | |
| 364. |
All are functions of hypothalamus, but, _________ ? |
| A. | Regulation of body temperature |
| B. | Regulation of anti-diuretic hormones |
| C. | Regulation of sleep and emotions |
| D. | Regulation of blood osmotic pressure |
| Answer» C. Regulation of sleep and emotions | |
| 365. |
Ingestion of bacteria by certain type of cells is termed as ________ ? |
| A. | Acclimatization |
| B. | Agglutination |
| C. | Paralysis |
| D. | Phagocytosis |
| Answer» E. | |
| 366. |
Sessile flowers have _________ ? |
| A. | No scent |
| B. | Irregular shape |
| C. | No pedicles |
| D. | No petals |
| Answer» D. No petals | |
| 367. |
Trisomy 21 is most common in mothers of the ________ age group. |
| A. | 15 to 19 |
| B. | 20 to 34 |
| C. | 35 to 39 |
| D. | 40 to 45 |
| Answer» E. | |
| 368. |
Self pollination is not possible in ________ ? |
| A. | Dioecious plants |
| B. | Pawpaw |
| C. | Flowers |
| D. | both A and B |
| Answer» E. | |
| 369. |
“lub” sound is produced after _________ ? |
| A. | The ventricles are fully contracted |
| B. | The ventricles start to relax |
| C. | The bicuspid and tricuspid valves suddenly close |
| D. | The semilunar valves are closed |
| Answer» D. The semilunar valves are closed | |
| 370. |
More water is reabsorbed in blood due to _________ ? |
| A. | More anti-diuretic hormone |
| B. | Lesser anti-diuretic hormone |
| C. | Active functioning of pancreas |
| D. | Inactivity of pituitary gland |
| Answer» B. Lesser anti-diuretic hormone | |
| 371. |
Examples of Epigeal germination include _________ ? |
| A. | Maize |
| B. | Sword bean seed |
| C. | Broad bean seed |
| D. | Corn |
| Answer» C. Broad bean seed | |
| 372. |
Mild tertian malaria is caused by _______ ? |
| A. | Plasmodium vivax |
| B. | Plasmodium falciparum |
| C. | Plasmodium ovale |
| D. | Plasmodium malariae |
| Answer» B. Plasmodium falciparum | |
| 373. |
Accurate name given to blood is ___________ ? |
| A. | Red fluid |
| B. | Hemoglobin |
| C. | Fluid tissue |
| D. | Plasma |
| Answer» D. Plasma | |
| 374. |
The expected number of RBCs in a single drop, or microliter, of blood is _________ million in Men. |
| A. | 4.5 to 6.2 million |
| B. | 3.4 to 6.8 million |
| C. | 3.2 to 7.2 million |
| D. | 4.0 to 5.2 million |
| Answer» B. 3.4 to 6.8 million | |
| 375. |
The normal range of the number of white blood cells in a microliter of blood is between _________ ? |
| A. | 2,500 and 09,300 |
| B. | 4,500 and 10,000 |
| C. | 4,900 and 12,000 |
| D. | None of these |
| Answer» C. 4,900 and 12,000 | |
| 376. |
Under unfavourable conditions, the Amoeba reproduces by ________ ? |
| A. | Binary fission |
| B. | Conjugation |
| C. | Encystment |
| D. | Endomixis |
| Answer» D. Endomixis | |
| 377. |
The expected number of RBCs in a single drop, or microliter, of blood is _________ million in Women. |
| A. | 4.5 to 6.2 million |
| B. | 3.4 to 6.8 million |
| C. | 3.2 to 7.2 million |
| D. | 4.0 to 5.2 million |
| Answer» E. | |
| 378. |
Fuel used by cells in cellular respiration to get energy is ________ ? |
| A. | polysaccharides |
| B. | Polypeptides |
| C. | Glucose |
| D. | Sugar |
| Answer» D. Sugar | |
| 379. |
Sporogony of malaria parasite occurs in _______ ? |
| A. | Liver of man |
| B. | RBC of man |
| C. | Stomach wall of mosquito |
| D. | Salivary glands of mosquito |
| Answer» D. Salivary glands of mosquito | |
| 380. |
The part of the brain that connects the two hemispheres of the brain is called____________? |
| A. | Corpus callosum |
| B. | Medulla oblongata |
| C. | Cerebral cortex |
| D. | Cerebellum |
| Answer» B. Medulla oblongata | |
| 381. |
Flagella are composed of________? |
| A. | micro tubules |
| B. | micro filaments |
| C. | intermediate filaments |
| D. | glycoproteins |
| Answer» B. micro filaments | |
| 382. |
Blood does not coagulate inside the body due to the presence of___________? |
| A. | Haemoglobin |
| B. | Fibrin |
| C. | Heparin |
| D. | Plasma |
| Answer» D. Plasma | |
| 383. |
Which of the following ” Tikka disease” is related with the crop? |
| A. | Musturd |
| B. | Paddy |
| C. | Ground nut |
| D. | None of these |
| Answer» D. None of these | |
| 384. |
The plant dye Henna imparts orangered colour to skin and hairs due to its reaction with which of the following? |
| A. | Lipids |
| B. | Carbohydrates |
| C. | Amino acids |
| D. | Protein and amino acids |
| Answer» E. | |
| 385. |
Which among the following is an Autotroph _________ ? |
| A. | Butterfly |
| B. | Mushroom |
| C. | Fish |
| D. | Algae |
| Answer» E. | |
| 386. |
Many bacteria in our digestive system synthesize vitamins for example vitamin_________? |
| A. | B1 |
| B. | B2 |
| C. | B12 |
| D. | B6 |
| Answer» D. B6 | |
| 387. |
The hormone that helps in Parthenocarpy? |
| A. | Abscisic acid |
| B. | Cytokinin |
| C. | Ethylene |
| D. | Gibberellin |
| Answer» E. | |
| 388. |
Liver fluke is parasite in the liver of__________? |
| A. | cattle |
| B. | sheep |
| C. | goat |
| D. | all of these |
| Answer» E. | |
| 389. |
Disease which transferred from animal to Human is_________? |
| A. | Sporadic |
| B. | Epidemic |
| C. | Endemic |
| D. | Zoonosis |
| Answer» E. | |
| 390. |
Which of the following is the less important organ in human body? |
| A. | Hair |
| B. | Appendix |
| C. | Hip bone |
| D. | Navel |
| Answer» C. Hip bone | |
| 391. |
Which is not a vertebrate ? |
| A. | Reptiles |
| B. | Fish |
| C. | Insect |
| D. | None of these |
| Answer» D. None of these | |
| 392. |
Sickle cell anemia was discovered by_________? |
| A. | Vernon Ingram |
| B. | Sanger |
| C. | Miescher |
| D. | none of these |
| Answer» B. Sanger | |
| 393. |
Tobacco mosaic virus was crystallized by__________? |
| A. | Pasteur |
| B. | Chamberland |
| C. | Stanely |
| D. | Ivanowski |
| Answer» D. Ivanowski | |
| 394. |
In human beings influenza is caused by_________? |
| A. | bacteria |
| B. | protist |
| C. | virus |
| D. | fungi |
| Answer» D. fungi | |
| 395. |
Gram +ve bacteria on treatment with crystal violet dye give _________colour? |
| A. | red |
| B. | green |
| C. | purple |
| D. | pink |
| Answer» D. pink | |
| 396. |
Snails belong to_________? |
| A. | gastropods |
| B. | bivalves |
| C. | arthropods |
| D. | platyhelminthes |
| Answer» B. bivalves | |
| 397. |
The life and activities of a cell is controlled by__________? |
| A. | cytoplasm |
| B. | nucleus |
| C. | vacuole |
| D. | mitochondria |
| Answer» C. vacuole | |
| 398. |
Amoeba moves in water with the help of locomotory organs called_________? |
| A. | tube feet |
| B. | cilia |
| C. | pseudopodia |
| D. | flagella |
| Answer» D. flagella | |
| 399. |
Non-enveloped naked viruses are known as___________? |
| A. | prions |
| B. | bacteriophages |
| C. | oncoviruses |
| D. | virions |
| Answer» E. | |
| 400. |
which of the following is called protein synthesizing machine? |
| A. | mitochondria |
| B. | nucleus |
| C. | chromosomes |
| D. | ribosomes |
| Answer» E. | |