MCQOPTIONS
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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.
| 301. |
There are _________ hypothesis which may explain opening and closing of stomata? |
| A. | One |
| B. | Two |
| C. | Three |
| D. | Four |
| Answer» C. Three | |
| 302. |
The zygote formed in liverworts is___________? |
| A. | Unicellular |
| B. | Mulicellular |
| C. | Multinucleate |
| D. | None of these |
| Answer» B. Mulicellular | |
| 303. |
The word virus is derived from Latin word venome meaning____________? |
| A. | Sweet fluid |
| B. | Sore Fluid |
| C. | Poisonous Fluid |
| D. | Salty Fluid |
| Answer» D. Salty Fluid | |
| 304. |
The word which E-Chatton suggested for bacteria and blue green algae was_____________? |
| A. | Autotrophs |
| B. | Heterotrophs |
| C. | Pro-cariotique |
| D. | Eu-cariotique |
| Answer» D. Eu-cariotique | |
| 305. |
The word “BIOLOGY” has been derived from_________ word? |
| A. | Latin |
| B. | English |
| C. | Greek |
| D. | French |
| Answer» D. French | |
| 306. |
The word Archaeobacteria (a division of bacteria) derived from Greek means___________? |
| A. | True bacteria |
| B. | False bacteria |
| C. | Recent bacteria |
| D. | Ancient bacteria |
| Answer» E. | |
| 307. |
The windpipe or trachea lies? |
| A. | Dorsal to oesophagus |
| B. | Ventral to oesophagus |
| C. | Lateral to oesophagus |
| D. | None of these |
| Answer» E. | |
| 308. |
The wax present on the body of cockroach is secreted: |
| A. | Mucocytes |
| B. | Leucocytes |
| C. | Oenocytes |
| D. | Granulocytes |
| Answer» D. Granulocytes | |
| 309. |
The vascular plants are termed as____________? |
| A. | tracheophytes |
| B. | bryophytes |
| C. | pteridophytes |
| D. | all of these |
| Answer» B. bryophytes | |
| 310. |
The utilization of the products of digestion is called___________? |
| A. | ingestion |
| B. | absorption |
| C. | assimilation |
| D. | both a and b |
| Answer» D. both a and b | |
| 311. |
The uptake of water in plants involves__________? |
| A. | Active transport |
| B. | Passive transport |
| C. | Both of these |
| D. | None of these |
| Answer» C. Both of these | |
| 312. |
The unicellular organisms ingest large molecules into their cytoplasm from the external environment without previously digesting them. This process is called___________? |
| A. | Diffusion |
| B. | Osmosis |
| C. | Phagocytosis |
| D. | Plasmolysis |
| Answer» D. Plasmolysis | |
| 313. |
The type of plastids which help in pollination is_________? |
| A. | Chromoplasts |
| B. | Leucoplasts |
| C. | Chloroplasts |
| D. | All of these |
| Answer» B. Leucoplasts | |
| 314. |
The type of learning in which there is loss or decrease in response to repeated stimuli? |
| A. | Imprinting |
| B. | Habituation |
| C. | Latent learning |
| D. | Insight learning |
| Answer» C. Latent learning | |
| 315. |
The tumours which are of small size and localized are___________? |
| A. | benign |
| B. | malignant |
| C. | gentle |
| D. | nasty |
| Answer» B. malignant | |
| 316. |
The trioses which are intermediate in respiration and photosynthesis are_______________? |
| A. | Glyceraldehydes |
| B. | Dihydroxy acetone |
| C. | Both of these |
| D. | None of these |
| Answer» D. None of these | |
| 317. |
The terms procariotique and eucariotique were proposed by___________? |
| A. | Whittaker |
| B. | Chatton |
| C. | Haeckel |
| D. | Margulis and Schwartz |
| Answer» C. Haeckel | |
| 318. |
The term biology was introduced in__________ in 1800? |
| A. | Germany |
| B. | Turkey |
| C. | Italy |
| D. | Japan |
| Answer» B. Turkey | |
| 319. |
The system well developed in the acoelomate is___________? |
| A. | Excretory system |
| B. | Nervous system |
| C. | Transport system |
| D. | All of these |
| Answer» E. | |
| 320. |
The survival of an animal depends upon its ability to take some from its environment____________? |
| A. | Chemicals |
| B. | Hydrocarbons |
| C. | Organic molecules |
| D. | Inorganic molecules |
| Answer» D. Inorganic molecules | |
| 321. |
The Study of organisms inhabiting the sea and Ocean and the physical and chemical characteristics of their environment is: |
| A. | Social Biology |
| B. | Marine Biology |
| C. | Environmental Biology |
| D. | Fresh Water Biology |
| Answer» C. Environmental Biology | |
| 322. |
The study of nature is called__________? |
| A. | Science |
| B. | Atom |
| C. | Molecule |
| D. | Element |
| Answer» B. Atom | |
| 323. |
The study of fossils is called__________? |
| A. | Environmental Biology |
| B. | Historical biology |
| C. | Palaeontology |
| D. | Social biology |
| Answer» D. Social biology | |
| 324. |
The study of fossils is called? |
| A. | Environmental Biology |
| B. | Historical biology |
| C. | Palaeontology |
| D. | Social biology |
| Answer» D. Social biology | |
| 325. |
The structure which has been formed or modified from gill pouches in humans is___________? |
| A. | Gills |
| B. | Eustachian tube |
| C. | Middle ear |
| D. | Lungs |
| Answer» C. Middle ear | |
| 326. |
The structure of an enzyme is altered by____________? |
| A. | Irreversible inhibitor |
| B. | Reversible inhibitor |
| C. | Competitive inhibitor |
| D. | Non-competitive inhibitor |
| Answer» B. Reversible inhibitor | |
| 327. |
The stent energy in the form of ADP is regenerated by mitochondria into__________? |
| A. | AMP |
| B. | ADP |
| C. | ATP |
| D. | All of these |
| Answer» D. All of these | |
| 328. |
The sponges in which sperms develop first are included in the category of__________? |
| A. | Peritandrous |
| B. | Pertandrous |
| C. | Protendrous |
| D. | Protandrous |
| Answer» E. | |
| 329. |
The space between the overtopped dichotomous branches was occupies by a sheet of _________ cells during evolution of megaphyllas? |
| A. | Sclerenchyma |
| B. | Chlorenchyma |
| C. | Parenchyma |
| D. | Collenchyma |
| Answer» C. Parenchyma | |
| 330. |
The skeleton of the sponges is in the form of variously shaped needle like structures called___________? |
| A. | Stripules |
| B. | Spicules |
| C. | Brails |
| D. | Spines |
| Answer» C. Brails | |
| 331. |
The skeleton of sponges is made up of___________? |
| A. | Calcium |
| B. | Silica |
| C. | Both of these |
| D. | None of these |
| Answer» D. None of these | |
| 332. |
The size of Spirochete is_____________? |
| A. | 0.1 -600 um |
| B. | 100-200 nm |
| C. | 500 um |
| D. | 0.75-1.25 um |
| Answer» D. 0.75-1.25 um | |
| 333. |
The size of smallest virus is______________? |
| A. | 10 nm |
| B. | 20 nm |
| C. | 30 nm |
| D. | 40 nm |
| Answer» C. 30 nm | |
| 334. |
The site/s where most of the uptake of water and minerals take place is/are__________? |
| A. | Root hairs |
| B. | Root cells |
| C. | Underground stem |
| D. | All of these |
| Answer» B. Root cells | |
| 335. |
The single healthy megaspore retained within the megasporangium germinates to form an egg containing female gaemtophyte called______________? |
| A. | Ovule |
| B. | Seed |
| C. | Fruit |
| D. | Embroyo sac |
| Answer» E. | |
| 336. |
The single main opening of the sponge cavity is____________? |
| A. | Osculum |
| B. | Ostia |
| C. | Spongocoel |
| D. | None of these |
| Answer» B. Ostia | |
| 337. |
The simplest of oxygen producting photosynthetic organisms are____________? |
| A. | Algae |
| B. | Bacteria |
| C. | Cyanobacteria |
| D. | Chlamydomonas |
| Answer» D. Chlamydomonas | |
| 338. |
The simplest of all bryophytes are___________? |
| A. | Thallophytes |
| B. | Embryophytes |
| C. | Mosses |
| D. | Liverworts |
| Answer» E. | |
| 339. |
The simplest amino acid is_________? |
| A. | alanine |
| B. | glycine |
| C. | valine |
| D. | phenylalanine |
| Answer» C. valine | |
| 340. |
The sequence of 3 bases on tRNA which is complementary to condon of mRNA is called____________? |
| A. | Gene |
| B. | Anticodon |
| C. | Code |
| D. | Codon |
| Answer» C. Code | |
| 341. |
The scientific study of livings is called? |
| A. | Anatomy |
| B. | Biology |
| C. | Geology |
| D. | Zoology |
| Answer» C. Geology | |
| 342. |
The Science of growing terrestrial plants in an aerated solution is_________? |
| A. | Hydrodynamics |
| B. | Hydroponics |
| C. | Hydrotonics |
| D. | None of them |
| Answer» C. Hydrotonics | |
| 343. |
The respiratory problem most common in smokers is_________? |
| A. | tuberculosis |
| B. | emphysema |
| C. | asthma |
| D. | cancer |
| Answer» C. asthma | |
| 344. |
The resolving power of electric microscope is____________? |
| A. | 0.2 mm |
| B. | 0.2 nm |
| C. | 0.2 m |
| D. | none of these |
| Answer» C. 0.2 m | |
| 345. |
The red green color blindness is sex linked recessive condition in man. A father with normal vision and a color blind mother world expect to produce. |
| A. | Color blind sons and daughter with normal vision |
| B. | Sons with normal vision and color blind daughters |
| C. | Color blind sons colour blind daughters and daughters with normal vision |
| D. | Sons with normal vision colour blind daughter and daughters with normal vision |
| Answer» B. Sons with normal vision and color blind daughters | |
| 346. |
The rate of reaction is directly proportional to the concentration of an enzyme which statement is incorrect in this respect_________________? |
| A. | Increase in enzyme molecule increases the available active sites |
| B. | This relation is for unlimited time period with unlimited enzyme concentration |
| C. | If the concentration is doubled the rate will become two fold. |
| D. | None of these |
| Answer» C. If the concentration is doubled the rate will become two fold. | |
| 347. |
The radial symmetry is found in the animals of___________? |
| A. | Protozoa |
| B. | Porifera |
| C. | Cnidaria |
| D. | All of these |
| Answer» D. All of these | |
| 348. |
The property of water due to which it works as a temperature stabilizer and hence protect living organisms from sudden thermal changes is_______________? |
| A. | High specific heat of vaporization |
| B. | High specific heat capacity |
| C. | Its Dipole nature |
| D. | Its liquid state |
| Answer» C. Its Dipole nature | |
| 349. |
The productivity of aquatic ecosystem is basically determined by light and____________? |
| A. | CO2 |
| B. | O2 |
| C. | Water |
| D. | Nutrients |
| Answer» E. | |
| 350. |
The process involved in inflammation of liver___________? |
| A. | apoptosis |
| B. | Necrosis |
| C. | Both a & b |
| D. | Non disjunction |
| Answer» C. Both a & b | |