MCQOPTIONS
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MCQOPTIONS
This section includes 45 Mcqs, each offering curated multiple-choice questions to sharpen your Biology Mcqs knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Stomata open due to _________ of K+ into the guard cells from the surrounding epidermis |
| A. | Diffusion |
| B. | Active transport |
| C. | Osmosis |
| D. | All of these |
| Answer» C. Osmosis | |
| 2. |
Smallest disease causing agents in plants are ? |
| A. | virion |
| B. | mycoplasma |
| C. | viroids |
| D. | prions |
| Answer» D. prions | |
| 3. |
Sperms released in water are carried to the mesenchyme in sponges by__________? |
| A. | Amoeboid cell |
| B. | Stipules |
| C. | Spicules |
| D. | Spines |
| Answer» B. Stipules | |
| 4. |
Sleep movements are a type of___________? |
| A. | Turgor movements |
| B. | Growth movements |
| C. | Tactic movements |
| D. | Paratonic movments |
| Answer» B. Growth movements | |
| 5. |
Test cross is used to find_____________? |
| A. | Trait |
| B. | Phenotype |
| C. | Genotype |
| D. | Ratios |
| Answer» D. Ratios | |
| 6. |
Density gradient centrifugation separates the materials on the basis of__________? |
| A. | Size alone |
| B. | Density alone |
| C. | Both a & b |
| D. | Velocity of movement |
| Answer» D. Velocity of movement | |
| 7. |
Immunization by vaccination was ?rst introduced by? |
| A. | Fleming in 1945 |
| B. | Florey & Chain in 1975 |
| C. | Flore & Chain in 1795 |
| D. | Edward Jenner in 1795 |
| Answer» E. | |
| 8. |
Some bacteria ranging occasionally a size of 500 ?m in length are___________________? |
| A. | Escherichia coli |
| B. | Spirochetes |
| C. | Mycoplasma |
| D. | Epulopiscuim |
| Answer» C. Mycoplasma | |
| 9. |
_____________ supported theory of special creation? |
| A. | Linnaeus |
| B. | Aristotle |
| C. | Mendel |
| D. | Lamarck |
| Answer» B. Aristotle | |
| 10. |
Starch is converted into maltose by? |
| A. | diastase |
| B. | invertase |
| C. | maltase |
| D. | amylase |
| Answer» B. invertase | |
| 11. |
Simple tissues and complex tissues are two groups of_________tissues. |
| A. | Meristematic |
| B. | Permanent |
| C. | Epidermal |
| D. | Supporting |
| Answer» C. Epidermal | |
| 12. |
Sythetic insulin from pork was formed by which technique? |
| A. | Biotechnology |
| B. | Social biological techniques |
| C. | Parasitology |
| D. | Both a and c |
| Answer» B. Social biological techniques | |
| 13. |
Spores in sporangia are produced by process? |
| A. | Sexual |
| B. | Asexual |
| C. | Both of these |
| D. | None of these |
| Answer» C. Both of these | |
| 14. |
Stunted growth of roots is due to the deficiency of____________in plants? |
| A. | Potassium |
| B. | Magnesium |
| C. | Phosphorus |
| D. | Iron. |
| Answer» D. Iron. | |
| 15. |
Spirochete is an example of___________? |
| A. | Aerobic bacteria |
| B. | Anaerobic bacteria |
| C. | Facultative bacteria |
| D. | Microaerophilic |
| Answer» C. Facultative bacteria | |
| 16. |
Shell of egg is leathery in appearance in___________? |
| A. | Amphibians |
| B. | Reptiles |
| C. | Birds |
| D. | Prototherians |
| Answer» C. Birds | |
| 17. |
Specialized protective coverings around megasporangium which vary in number are called_________________? |
| A. | Sporangium |
| B. | Integuments |
| C. | Ovule |
| D. | Pericarp |
| Answer» C. Ovule | |
| 18. |
So far over _____________ number of species of animals are known? |
| A. | million |
| B. | 1 million |
| C. | 1 |
| D. | 2 million |
| Answer» D. 2 million | |
| 19. |
Starch cellulose and glaycogen yield ___________ on complete hydrolysis? |
| A. | Maltose |
| B. | Sucrose |
| C. | Fructose |
| D. | Glucose |
| Answer» E. | |
| 20. |
Stomatal transpiration is __________ of total transpiration |
| A. | 90% |
| B. | 91% |
| C. | 93% |
| D. | 95% |
| Answer» B. 91% | |
| 21. |
Sperms of liverworts, mosses, ferns move towards archegonia, in response to uncleic acid released by the ovum. This is an example of ____________? |
| A. | Chemotropic movement |
| B. | Chemotactic movement |
| C. | Chemosastic movement |
| D. | Haptonastic movement |
| Answer» C. Chemosastic movement | |
| 22. |
Solanum tuberosum is a scientific name of___________? |
| A. | Onion |
| B. | Amaltas |
| C. | Potato |
| D. | Tomato |
| Answer» D. Tomato | |
| 23. |
Single circuit heart is found in_________? |
| A. | Fishes |
| B. | Amphibians |
| C. | Reptiles |
| D. | Mammals |
| Answer» B. Amphibians | |
| 24. |
Stentor is a/an____________? |
| A. | Ciliate |
| B. | Foraniniferan |
| C. | Actinopods |
| D. | Apicomplexan |
| Answer» B. Foraniniferan | |
| 25. |
On the basis of collected facts and ?gures, a scientist formulates a factitive statement called: |
| A. | Observation |
| B. | Research work |
| C. | Hypothesis |
| D. | Inductive Reasoning |
| Answer» D. Inductive Reasoning | |
| 26. |
Sporangia of which of the following tracheopytes develop singly on the upper side of sporophylls which may or may not be arranged to form strobili_____________? |
| A. | Psilopsida |
| B. | Lycopsida |
| C. | Sphenopsida |
| D. | Prteropsida |
| Answer» C. Sphenopsida | |
| 27. |
Taking in liquid material into the cells is known as_________? |
| A. | Phagocytosis |
| B. | Pinocytosis |
| C. | Exocytosis |
| D. | Both a and b |
| Answer» C. Exocytosis | |
| 28. |
Stem of Psilophyton an example of psilogsida is differentiated into an underground rhizome and an aerial part both of which are _________ branched |
| A. | Isotomous |
| B. | Dichotomously |
| C. | Trichotomously |
| D. | Multichotomously |
| Answer» C. Trichotomously | |
| 29. |
Sickle cell anemia is an example of_________________? |
| A. | Chromosomal aberration |
| B. | Insertion of gene |
| C. | Deletion of gene |
| D. | Point mutation |
| Answer» E. | |
| 30. |
Sub- phylum vertebrate is also known as__________? |
| A. | Pisces |
| B. | Craniata |
| C. | Aves |
| D. | Amphibia |
| Answer» C. Aves | |
| 31. |
Specific heat of vaporization of water is_______________? |
| A. | 574 Kcal/kg |
| B. | 674 Kcal/kg |
| C. | 774 Kcal/kg |
| D. | 874 Kcal/kg |
| Answer» B. 674 Kcal/kg | |
| 32. |
Stomata cover only ______________ of leaf surface? |
| A. | 10% |
| B. | 1-2 % |
| C. | 50% |
| Answer» D. | |
| 33. |
Sperms are _________ in origin. |
| A. | Ectodermal |
| B. | Mesodermal |
| C. | Endodermal |
| D. | None of these |
| Answer» C. Endodermal | |
| 34. |
Strong chlorosis is due to the deficiency of _____________ in plants? |
| A. | Magnesium |
| B. | Nitrogen |
| C. | Potassium |
| D. | Phosphorus |
| Answer» C. Potassium | |
| 35. |
Temperate phage may exist as_____________? |
| A. | Prophage |
| B. | Capsid |
| C. | Viron |
| D. | Retrovirus |
| Answer» B. Capsid | |
| 36. |
Spores produced by slime molds are__________? |
| A. | Haploid |
| B. | Diploid |
| C. | Triploid |
| D. | None of these |
| Answer» B. Diploid | |
| 37. |
According to modern system of taxonomy, living organisms have been classi?ed into? |
| A. | Three Kingdoms |
| B. | Five Kingdoms |
| C. | Two Kingdoms |
| D. | Six Kingdoms |
| Answer» C. Two Kingdoms | |
| 38. |
Sythetic insulin from pork was formed by which technique__________? |
| A. | Parasitology |
| B. | Social biological techniques |
| C. | Biotechnology |
| D. | Both a and c |
| Answer» D. Both a and c | |
| 39. |
Terrestrial animals like kangaroo rat survive even without drinking water since__________? |
| A. | They can retain excessive water in their body during raining season. |
| B. | They feed on carbohydrate rich seeds which can provide them with metabolic water |
| C. | They are anhydrobiotic organisms |
| Answer» E. | |
| 40. |
Symbionts which help plants in uptake of phosphorous and trace metals such as zinc and copper. |
| A. | Bacteria |
| B. | Viruses |
| C. | Fungi |
| D. | Cyanobacteria |
| Answer» D. Cyanobacteria | |
| 41. |
Sex pill is formed in which of the following processes? |
| A. | Binary fission |
| B. | Mitosis |
| C. | Sexual reproduction |
| D. | Conjugation |
| Answer» E. | |
| 42. |
Simple breaking of mycelium resulting in formation of a new mycelium from each broken segments is called__________? |
| A. | Sporing |
| B. | Conidiation |
| C. | Budding |
| D. | Fragmentation |
| Answer» E. | |
| 43. |
Sporophyte is____________? |
| A. | Monoploid |
| B. | Haploid |
| C. | Diploid |
| D. | Polyploidy |
| Answer» D. Polyploidy | |
| 44. |
The ?rst antibiotic to be discovered was_____________? |
| A. | Penicillin |
| B. | Cephalosporin |
| C. | Amino glycosides |
| D. | Erythromycin |
| Answer» B. Cephalosporin | |
| 45. |
Snails belong to__________? |
| A. | Cephalopodsxc |
| B. | Gastropods |
| C. | Bivalves |
| D. | Athropods |
| Answer» C. Bivalves | |