MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 1212 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.
| 401. |
The major cell infected by the HIV is lymphocyte ? |
| A. | helper-T |
| B. | B |
| C. | both T and B |
| D. | none of these |
| Answer» B. B | |
| 402. |
The main types of plastids are___________? |
| A. | Chloroplasts |
| B. | Chromoplasts |
| C. | Leucoplasts |
| D. | All of these |
| Answer» E. | |
| 403. |
The main nitrogenous waste formed in the body of earthworm is/are___________? |
| A. | Ammonia |
| B. | Urea |
| C. | Uric acid |
| D. | Trimethylamine oxide |
| Answer» C. Uric acid | |
| 404. |
The liquid that escapes during defrosting frozen meat contains _____ bacteria? |
| A. | Campylobacter |
| B. | Nitrobacter |
| C. | Azobacter |
| D. | Salmonella |
| Answer» E. | |
| 405. |
The light microscope can make the object_________times bigger? |
| A. | 10 times |
| B. | 100 times |
| C. | 1000 times |
| D. | 10000 times |
| Answer» D. 10000 times | |
| 406. |
The life and activities of a cell is controlled by__________? |
| A. | cytoplasm |
| B. | nucleus |
| C. | vacuole |
| D. | mitochondria |
| Answer» C. vacuole | |
| 407. |
The leaf is bilobed with midrib between them. The plant is____________? |
| A. | Saraccnia |
| B. | Dionaea |
| C. | Pitcher plant |
| D. | None of these |
| Answer» C. Pitcher plant | |
| 408. |
The Kingdom of recyclers is known as kingdom_____________? |
| A. | Algae |
| B. | Bacteria |
| C. | Fungi |
| D. | Embryophata |
| Answer» D. Embryophata | |
| 409. |
The internal buds are known as__________? |
| A. | Spicules |
| B. | Choanocytes |
| C. | Gemmules |
| D. | None of these |
| Answer» D. None of these | |
| 410. |
The innate tendency of offspring to resemble their parents is called________? |
| A. | heridity |
| B. | heridisk |
| C. | varaition |
| D. | none |
| Answer» B. heridisk | |
| 411. |
The increase in pH of blood has ________ effect on the oxygen carrying capacity of haemogolobin? |
| A. | plus ve |
| B. | – ve |
| C. | No |
| D. | All of these |
| Answer» B. – ve | |
| 412. |
The human naked eye can differentiate between two points which are __________ apart? |
| A. | 1.0 mm |
| B. | 0.1 mm |
| C. | 1.0 cm |
| D. | 1.0 dm |
| Answer» B. 0.1 mm | |
| 413. |
The hormone that helps in Parthenocarpy? |
| A. | Abscisic acid |
| B. | Cytokinin |
| C. | Ethylene |
| D. | Gibberellin |
| Answer» E. | |
| 414. |
The higher animals have special organs for exchange of gases as their skin is ___________ ? |
| A. | Thin |
| B. | Thick |
| C. | Soft |
| D. | Hard |
| Answer» C. Soft | |
| 415. |
The heart is enclosed in a membrane called________? |
| A. | pleura |
| B. | pericardium |
| C. | peritoneum |
| D. | epithelium |
| Answer» C. peritoneum | |
| 416. |
The greatest diversity of animals in the lake is found in which one of the following zones? |
| A. | Limmnetic zone |
| B. | Littoral zone |
| C. | Profundal zone |
| D. | None of these |
| Answer» C. Profundal zone | |
| 417. |
The glycolate produced diffuses into the membrane bounded organelles called____________? |
| A. | Glyoxisomes |
| B. | Peroxisomes |
| C. | Lysosomes |
| D. | Mitochondria |
| Answer» C. Lysosomes | |
| 418. |
The function of coelom is__________? |
| A. | To increase the size of the animals |
| B. | To help in the functioning of reproductive system |
| C. | To provide space for the development of organs and systems |
| D. | None of these |
| Answer» D. None of these | |
| 419. |
The food of hydra consists of___________? |
| A. | Humus |
| B. | Detritus |
| C. | Dead microscopic animals |
| D. | Small crustaceans |
| Answer» E. | |
| 420. |
The following vegetable have 90% of water? |
| A. | Cabbage |
| B. | Lady finger(okra) |
| C. | Cassava |
| D. | Non of these |
| Answer» C. Cassava | |
| 421. |
The foetus is protected from the mechanical damage by the__________? |
| A. | cervix |
| B. | vagina |
| C. | uterus |
| D. | amniotic fluid |
| Answer» E. | |
| 422. |
The flow of lymph is maintained by__________? |
| A. | Movement of viscera |
| B. | Breathing movements |
| C. | Valves |
| D. | All of these |
| Answer» E. | |
| 423. |
The first stage of development in which a cavity appears is the__________? |
| A. | Neurula |
| B. | Morula |
| C. | Gastrula |
| D. | Balastula |
| Answer» E. | |
| 424. |
The first organism of whose genome was completely discovered was____________? |
| A. | Human beings |
| B. | Influenza Virus |
| C. | Hemophilus Influenza |
| D. | None of these |
| Answer» D. None of these | |
| 425. |
The first layer of cell wall which is formed is___________? |
| A. | Primary wall |
| B. | Secondary wall |
| C. | Middle lamella |
| D. | All of these |
| Answer» B. Secondary wall | |
| 426. |
The first ever vascular plants are_________? |
| A. | Cooksonia |
| B. | Selaginella |
| C. | Adiantum |
| D. | Dryopteris |
| Answer» B. Selaginella | |
| 427. |
The first eukarotes appeared about __________ years ago? |
| A. | 1.5 billion |
| B. | 2.5 billion |
| C. | 3.5 billion |
| D. | 4.5 billion |
| Answer» B. 2.5 billion | |
| 428. |
The first cloned animal was____________? |
| A. | Goat |
| B. | Cow |
| C. | Rat |
| D. | Sheep |
| Answer» E. | |
| 429. |
The first cell of the sporophyte generation is______________? |
| A. | Oospore |
| B. | Spore mother cell |
| C. | Spore |
| D. | Gamete |
| Answer» B. Spore mother cell | |
| 430. |
The first bacterium isolated was_________________? |
| A. | Coccus |
| B. | Bacillus |
| C. | Vibrio |
| D. | Spirochete |
| Answer» C. Vibrio | |
| 431. |
The first action spectrum was obtained by___________? |
| A. | T.W.Englemam |
| B. | Malleus |
| C. | T.W.Inws |
| D. | W.Stapes |
| Answer» B. Malleus | |
| 432. |
The fate of each blastomere is foretold. The cleavage will be as____________? |
| A. | Spiral and indeterminate |
| B. | Radial and indeterminate |
| C. | Radial and indeterminate |
| D. | Spiral and determinate |
| Answer» E. | |
| 433. |
The experiments on DNA molecules in chromosomes for knowing the basis of inherited diseases are conducted by ? |
| A. | Molecular biologists |
| B. | Microbiologists |
| C. | Freshwater biologists |
| D. | Social biologist |
| Answer» B. Microbiologists | |
| 434. |
The experiments on DNA molecules in chromosomes for knowing the basis of inherited diseases are conducted by________? |
| A. | Molecular biologists |
| B. | Microbiologists |
| C. | Freshwater biologists |
| D. | Social biologist |
| Answer» B. Microbiologists | |
| 435. |
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. | |
| 436. |
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 | |
| 437. |
The evaporative cooling in the respiratory tract of dogs is called? |
| A. | Vasodilation |
| B. | Vasoconstriction |
| C. | Panting |
| D. | All of these |
| Answer» D. All of these | |
| 438. |
The element in basic structure of proteins which differentiate them from carbohydrates________? |
| A. | C |
| B. | S |
| C. | H |
| D. | N |
| Answer» C. H | |
| 439. |
The drfinite shape to ciliates is given by____________? |
| A. | Pellicle |
| B. | Penicle |
| C. | Calcium |
| D. | Cell wall |
| Answer» B. Penicle | |
| 440. |
The distal blind end of the malpighian tubules bathes freely in____________? |
| A. | Digestive tract |
| B. | Intestines |
| C. | Haemocoel |
| D. | Coelom |
| Answer» D. Coelom | |
| 441. |
The discease in which transmembrane carrier for the chloride ion is not produced is__________? |
| A. | Hyperchloesterolemia |
| B. | Cystic fibrosis |
| C. | Severe combined immunodeficiency syndrome |
| D. | AIDS |
| Answer» C. Severe combined immunodeficiency syndrome | |
| 442. |
The diffusion of ions along with water also takes place by mass flow system along the ________ path? |
| A. | Tonoplast |
| B. | Apoplast |
| C. | Symplast |
| D. | Vacuolar |
| Answer» C. Symplast | |
| 443. |
The dichotomously branching system has shape similar to________________? |
| A. | U |
| B. | R |
| C. | Y |
| D. | Fork |
| Answer» D. Fork | |
| 444. |
The dense fluid filled region in the chloroplast is____________? |
| A. | Grana |
| B. | Stroma |
| C. | Thylakoid |
| D. | None of these |
| Answer» C. Thylakoid | |
| 445. |
The covalent bond between two monosaccharide subunits is called________________? |
| A. | Phosphodiester bond |
| B. | Peptide bond |
| C. | Glycosidic Bond |
| D. | Ionic bond |
| Answer» D. Ionic bond | |
| 446. |
The contraction of which of the following muscle fibers, is controlled by hormones? |
| A. | A smooth muscle |
| B. | A cardiac muscle |
| C. | A skeletal muscle |
| D. | All of these |
| Answer» B. A cardiac muscle | |
| 447. |
The concept that various organisms dominated this planet during various geological time period and thus placing organisms in a time squence came from the studies by________? |
| A. | Environmental biologist |
| B. | Paleontologist |
| C. | Marine biologist |
| D. | Social biologist |
| Answer» C. Marine biologist | |
| 448. |
The concept that various organisms dominated this planet during various geological time period and thus placing organisms in a time squence came from the studies by ? |
| A. | Environmental biologist |
| B. | Paleontologist |
| C. | Marine biologist |
| D. | Social biologist |
| Answer» C. Marine biologist | |
| 449. |
The common waste material in bacteria is____________? |
| A. | Glycogen |
| B. | Lactic acid |
| C. | Ammonia |
| D. | Urea |
| Answer» C. Ammonia | |
| 450. |
The chloroplasts of diatoms and chrysophycean algae do not possess____________? |
| A. | Chloryphyllpigments |
| B. | Enzymes for photolysis |
| C. | Defined grana and stroma |
| D. | Carotenes with chlorophylls |
| Answer» D. Carotenes with chlorophylls | |