MCQOPTIONS
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MCQOPTIONS
This section includes 1075 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.
| 351. |
From the bark of which plant is quinine extracted ? |
| A. | Eucalyptus |
| B. | Cinchona |
| C. | Neem |
| D. | Cedar |
| Answer» C. Neem | |
| 352. |
Which of the following organelles is called Atom bombs ? |
| A. | Microtubules |
| B. | Nucleolus |
| C. | Golgi bodies |
| D. | Lysosome |
| Answer» E. | |
| 353. |
The newly hatched tadpole breaths through its |
| A. | Lung |
| B. | External gills |
| C. | Internal gills |
| D. | All of the above |
| Answer» C. Internal gills | |
| 354. |
Which of the following procedure treats spinal stenosis (stricture) ? |
| A. | Laminoplasty |
| B. | Corpectomy |
| C. | Foraminotomy |
| D. | All of the above |
| Answer» E. | |
| 355. |
Teeth and Bones acquire strength and rigidity from |
| A. | Calcium |
| B. | Fluorine |
| C. | Chlorine |
| D. | Sodium |
| Answer» B. Fluorine | |
| 356. |
The sum of genes in a population is called |
| A. | Phenotype |
| B. | Karyotype |
| C. | Genotype |
| D. | Gene pool |
| Answer» E. | |
| 357. |
Dormancy period of animals during winter season is called : |
| A. | Aestivation |
| B. | Hibernation |
| C. | Regeneration |
| D. | Mutation |
| Answer» C. Regeneration | |
| 358. |
Which of the following vertebrates lack exoskeleton ? |
| A. | Amphibia |
| B. | Mammalia |
| C. | Aves |
| D. | Chondrichthyes |
| Answer» E. | |
| 359. |
The average life span of red blood corpuscles is about |
| A. | 100 - 200 days |
| B. | 100 - 120 days |
| C. | 160 - 180 days |
| D. | 150 - 200 days |
| Answer» C. 160 - 180 days | |
| 360. |
Which one of the following is known as the immovable property in the cell? |
| A. | Carbohydrate |
| B. | Fat |
| C. | Protein |
| D. | Nucleic acid |
| Answer» E. | |
| 361. |
The enzyme that coagulates milk into curd is |
| A. | Rennin |
| B. | Pepsin |
| C. | Resin |
| D. | Citrate |
| Answer» B. Pepsin | |
| 362. |
Allosomes are |
| A. | cell organelles |
| B. | plant hormones |
| C. | alleles |
| D. | sex chromosomes |
| Answer» E. | |
| 363. |
Osteocytes are found in |
| A. | Bone |
| B. | Blood |
| C. | Cartilage |
| D. | Lymph |
| Answer» B. Blood | |
| 364. |
The first effective vaccine against polio was prepared by : |
| A. | J.H. Gibbon |
| B. | Jonas E. Salk |
| C. | Robert Edwards |
| D. | James Simpson |
| Answer» C. Robert Edwards | |
| 365. |
Minamata disease was caused by : |
| A. | Mercury |
| B. | Lead |
| C. | Cadmium |
| D. | Zinc |
| Answer» B. Lead | |
| 366. |
IUCN categorized major threatened species under : |
| A. | seven classes |
| B. | five classes |
| C. | six classes |
| D. | four classes |
| E. | None of these |
| Answer» F. | |
| 367. |
The metal ion present in vitamin B |
| A. | cobalt |
| B. | zinc |
| C. | nickel |
| D. | iron |
| Answer» B. zinc | |
| 368. |
The vitamin necessary for coagulation of blood is : |
| A. | Vitamin B |
| B. | Vitamin C |
| C. | Vitamin K |
| D. | Vitamin E |
| Answer» D. Vitamin E | |
| 369. |
Breeding and management of bees is known as : |
| A. | Sericulture |
| B. | Silviculture |
| C. | Pisciculture |
| D. | Apiculture |
| Answer» E. | |
| 370. |
Chocolates can be bad for health because of a high content of |
| A. | cobalt |
| B. | nickel |
| C. | zinc |
| D. | lead |
| Answer» E. | |
| 371. |
Cuscuta is a |
| A. | partial stem parasite |
| B. | complete stem parasite |
| C. | partial root parasite |
| D. | complete root parasite |
| Answer» C. partial root parasite | |
| 372. |
Which virus from the following combinations is contagious for human beings |
| A. | H5N1 |
| B. | H2N3 |
| C. | H4N1 |
| D. | H4N2 |
| Answer» B. H2N3 | |
| 373. |
When a child is born, what happens to its blood circulation ? |
| A. | Its blood flows for the first time |
| B. | Its blood reverses its flow through the heart |
| C. | Its blood ceases to pass from one atrium to the other |
| D. | Its blood carries wastes for the first time |
| Answer» E. | |
| 374. |
Which carbohydrate is used in silvering of mirrors ? |
| A. | Fructose |
| B. | Sucrose |
| C. | Glucose |
| D. | Starch |
| Answer» D. Starch | |
| 375. |
Which one of the following is called the digestive bag in the cell? |
| A. | Golgi body |
| B. | Mitochondrion |
| C. | Ribosome |
| D. | Lysosome |
| Answer» E. | |
| 376. |
Which one of the following organs excretes water, fat and various catabolic wastes ? |
| A. | Kidney |
| B. | Skin |
| C. | Spleen |
| D. | Salivary glands |
| Answer» B. Skin | |
| 377. |
Which of the following cytoplasmic organelles are treated as prokaryotic cells within the eukaryotic cells ? |
| A. | Mitochondria |
| B. | Golgi bodies |
| C. | Lysosomes |
| D. | Glyoxysomes |
| Answer» B. Golgi bodies | |
| 378. |
Which of the following relieves pain ? |
| A. | Antibiotics |
| B. | Analgesic |
| C. | Antipyretic |
| D. | Disinfectant |
| Answer» C. Antipyretic | |
| 379. |
The disease that is caused by virus is : |
| A. | Typhoid |
| B. | Cholera |
| C. | Common cold |
| D. | Malaria |
| Answer» D. Malaria | |
| 380. |
.Stomatal opening is based on |
| A. | Exosmosis |
| B. | Endosmosis |
| C. | Plasmolysis in guard cells |
| D. | Decrease in concentration of cell sap |
| Answer» C. Plasmolysis in guard cells | |
| 381. |
Kyoto Protocol , an agreement signed by various countries, is associated with |
| A. | Clean Environment and Climate Change |
| B. | |
| C. | Building common food stock to save human beings from any natural disaster |
| D. | International Trade |
| E. | Deep Sea Oil and Mineral Exploration |
| Answer» B. | |
| 382. |
The type of tail found in Shark is |
| A. | Protocercal |
| B. | Homocercal |
| C. | Heterocercal |
| D. | Diphycercal |
| Answer» D. Diphycercal | |
| 383. |
The largest mixed gland of human body is : |
| A. | Thymus |
| B. | Liver |
| C. | Pancreas |
| D. | Spleen |
| Answer» D. Spleen | |
| 384. |
Which of the following is known as the graveyard of RBC ? |
| A. | Liver |
| B. | Spleen |
| C. | Brain |
| D. | Heart |
| Answer» C. Brain | |
| 385. |
A person having AB-group of blood can donate blood to a person having |
| A. | A-group |
| B. | B-group |
| C. | |
| D. | AB-group |
| E. | O-group |
| Answer» D. AB-group | |
| 386. |
What vessel carries the venous blood to the lungs for oxygenation? |
| A. | Pulmonary arteries |
| B. | Pulmonary veins |
| C. | Pulmonary arterio-venous shunt |
| D. | Right ventricle |
| Answer» B. Pulmonary veins | |
| 387. |
Most fish do not sink in water because of the presence of |
| A. | air sinuses |
| B. | buoyant scales on the body |
| C. | swim bladder |
| D. | swimmerets |
| Answer» D. swimmerets | |
| 388. |
Quinine, the commonly used drug to treat malaria, is obtained from a plant. What part of the plant yields the drug ? |
| A. | Leaves |
| B. | Fruits |
| C. | Root |
| D. | Stem bark |
| Answer» E. | |
| 389. |
Which of the following metals is present in chlorophyll? |
| A. | Beryllium |
| B. | Magnesium |
| C. | Calcium |
| D. | Barium |
| Answer» C. Calcium | |
| 390. |
Microbial degradation of nitrates in to atmospheric nitrogen is known as : |
| A. | Ammonification |
| B. | Nitrification |
| C. | Denitrification |
| D. | Putrefaction |
| Answer» D. Putrefaction | |
| 391. |
Total number of muscles present in our body is : |
| A. | 565 |
| B. | 656 |
| C. | 665 |
| D. | 556 |
| Answer» C. 665 | |
| 392. |
Dumb-bell shaped guard cells are present in |
| A. | Groundnut |
| B. | Gram |
| C. | Wheat |
| D. | Mango |
| Answer» D. Mango | |
| 393. |
What does enamel cover ? |
| A. | Crown of the tooth |
| B. | Dentin on all sides |
| C. | Cementum |
| D. | Cementum and partly dentin |
| Answer» B. Dentin on all sides | |
| 394. |
The Sigmoid Colon is part of |
| A. | Small Intestine |
| B. | Anal Canal |
| C. | Large Intestine |
| D. | Ileum |
| Answer» D. Ileum | |
| 395. |
Which of the following atmospheric gases constitute greenhouse gases? |
| A. | a, c and d |
| B. | a and d |
| C. | a and c |
| D. | a, b and d |
| Answer» B. a and d | |
| 396. |
The best milch breed in the word is : |
| A. | Chittagong |
| B. | Sindhi |
| C. | Deoni |
| D. | Holstein Friesian |
| Answer» E. | |
| 397. |
Presticides are used to destroy |
| A. | micro-organisms |
| B. | poisonous substances in soil |
| C. | poisonous plants |
| D. | insects |
| Answer» E. | |
| 398. |
The pigment involved in photosynthetic activity is- |
| A. | anthocyanin |
| B. | fucxanthin |
| C. | carotenoid |
| D. | chlorophyll |
| Answer» E. | |
| 399. |
Free-living nitrogen fixing microorganisms are |
| A. | Rhizobia |
| B. | Soil fungi |
| C. | Vesicular arbuscular mycorrhiza |
| D. | Blue green algae |
| Answer» B. Soil fungi | |
| 400. |
Which of the plant products is used in leather industry ? |
| A. | Resin |
| B. | Mucilage |
| C. | Latex |
| D. | Tannin |
| Answer» E. | |