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.
| 801. |
Examples of Rhodophytes are___________? |
| A. | Chondrus |
| B. | Polysiphonia |
| C. | Both of these |
| D. | Pinnularia |
| Answer» D. Pinnularia | |
| 802. |
Lime stone deposits are formed from__________? |
| A. | Zooflagellates |
| B. | Foraminferans |
| C. | Aetinopods |
| D. | Apicomplexans |
| Answer» C. Aetinopods | |
| 803. |
The most important group of producers in marine ecosystem is of__________? |
| A. | Diatoms |
| B. | Euglenoids |
| C. | Dinoflagellates |
| D. | Brown algae |
| Answer» B. Euglenoids | |
| 804. |
Complex specialized flagellates living symbiotically in the gut of termites are___________? |
| A. | Trichonymphas |
| B. | Trypanosoma |
| C. | Euglena |
| D. | Radiolarians |
| Answer» B. Trypanosoma | |
| 805. |
The drfinite shape to ciliates is given by____________? |
| A. | Pellicle |
| B. | Penicle |
| C. | Calcium |
| D. | Cell wall |
| Answer» B. Penicle | |
| 806. |
Stentor is a/an____________? |
| A. | Ciliate |
| B. | Foraniniferan |
| C. | Actinopods |
| D. | Apicomplexan |
| Answer» B. Foraniniferan | |
| 807. |
In which of the following pigments major energy reserves and cell wall are like plants? |
| A. | Rhodophyta |
| B. | Chlorophyta |
| C. | Phaeophyta |
| D. | Chrysophyta |
| Answer» C. Phaeophyta | |
| 808. |
Golden algae are also known as___________? |
| A. | Chrysophyta |
| B. | Phaeophyta |
| C. | Pyrrophyta |
| D. | Rhodophyta |
| Answer» B. Phaeophyta | |
| 809. |
Brown algae are also known as___________? |
| A. | Phaeophyta |
| B. | Rhodophyta |
| C. | Pyrrophyta |
| D. | Chrysophyta |
| Answer» B. Rhodophyta | |
| 810. |
Which of the following statement is incorrect regarding germ theory of diseases postulated by Robert Koch_____________? |
| A. | A specific organism can always be found in association with a given disease |
| B. | The organism can be isolated and grown in pure culture in the laboratories |
| C. | The pure culture cannot produce the disease when inoculated into susceptible animal however the causative organism isolated from pure culture can do s |
| D. | It is possible to recover the organism in pure culture from the experimentally infected animals |
| Answer» D. It is possible to recover the organism in pure culture from the experimentally infected animals | |
| 811. |
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. | |
| 812. |
Who discovered the bacteria causing tuberculosis and also developed various techniques of media preparation and maintenance of pure culture_____________? |
| A. | Robert Koch |
| B. | Louis Pasteur |
| C. | Alexander Fleming |
| D. | Leeuwenhoek |
| Answer» E. | |
| 813. |
Which of the following bacteria are thick rigid and spiral______________? |
| A. | Vibrio |
| B. | Spirillum |
| C. | Spirochete |
| D. | Coccus |
| Answer» C. Spirochete | |
| 814. |
In all arthropods,the body is covered with a chittinous cuticle which is secreted by the____________? |
| A. | Endodermis |
| B. | Mesophyll |
| C. | Chitin |
| D. | Epidermis |
| Answer» E. | |
| 815. |
Some bacteria ranging occasionally a size of 500 ?m in length are___________________? |
| A. | Escherichia coli |
| B. | Spirochetes |
| C. | Mycoplasma |
| D. | Epulopiscuim |
| Answer» C. Mycoplasma | |
| 816. |
The first bacterium isolated was_________________? |
| A. | Coccus |
| B. | Bacillus |
| C. | Vibrio |
| D. | Spirochete |
| Answer» C. Vibrio | |
| 817. |
Coccobacillus has a shape similar to________________? |
| A. | Diplobacillus |
| B. | Sarcina |
| C. | Egg |
| D. | None of these |
| Answer» D. None of these | |
| 818. |
A group of 8 cocci is called______________? |
| A. | Diplococci |
| B. | Octococci |
| C. | Tetrad |
| D. | Sarcina |
| Answer» E. | |
| 819. |
Spirochete is an example of___________? |
| A. | Aerobic bacteria |
| B. | Anaerobic bacteria |
| C. | Facultative bacteria |
| D. | Microaerophilic |
| Answer» C. Facultative bacteria | |
| 820. |
Cyanobacteria reproduce by____________? |
| A. | Binary fission |
| B. | Mitosis |
| C. | Meiosis |
| D. | Conjugation |
| Answer» B. Mitosis | |
| 821. |
Chemical substances used on living tissues that inhibit the growth of micro organism are called___________? |
| A. | Antiseptics |
| B. | Disinfectants |
| C. | Antibiotics |
| D. | Vaccines |
| Answer» B. Disinfectants | |
| 822. |
Rapid growth at exponential ration occurs in which phase of bacterial growth: |
| A. | Lag phase |
| B. | Log phase |
| C. | Stationary phase |
| D. | Death / decline phase |
| Answer» C. Stationary phase | |
| 823. |
Sex pill is formed in which of the following processes? |
| A. | Binary fission |
| B. | Mitosis |
| C. | Sexual reproduction |
| D. | Conjugation |
| Answer» E. | |
| 824. |
Cyanobacteria have ________ cell wall? |
| A. | Gram +ve. |
| B. | Gram – ve. |
| C. | Acid fast |
| D. | Cellulose rich |
| Answer» C. Acid fast | |
| 825. |
E. coli and example of____________? |
| A. | Aerobic bacteria |
| B. | Anaerobic bacteria |
| C. | Facultative bacteria |
| D. | Microaerophilic |
| Answer» D. Microaerophilic | |
| 826. |
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 | |
| 827. |
Which of the following organ is responsible for body metabolism? |
| A. | Kidney |
| B. | Liver |
| C. | Lungs |
| D. | Heart |
| Answer» C. Lungs | |
| 828. |
Which of the following bacteria do not have flagella commonly__________? |
| A. | Cocci |
| B. | Bacilli |
| C. | Streptobacilli |
| D. | Vibrio |
| Answer» B. Bacilli | |
| 829. |
A bacterium with tuft of flagella at both poles is called_____________? |
| A. | Lophotrichus |
| B. | Monotrichous |
| C. | Peritrichous |
| D. | Amphitrichous |
| Answer» E. | |
| 830. |
All of the following are coelomates except:____________? |
| A. | Deuterosomes |
| B. | Proterosomes |
| C. | Hemichordates |
| D. | Aschelminthes |
| Answer» E. | |
| 831. |
Which of the following structure provides greater pathogenicity to the bacteria__________? |
| A. | Capsule |
| B. | Slime |
| C. | Cell Wall |
| D. | Cell membrane |
| Answer» C. Cell Wall | |
| 832. |
Protonema is___________? |
| A. | Thallus like |
| B. | Algae like |
| C. | Fungus like |
| D. | Plant like |
| Answer» C. Fungus like | |
| 833. |
The radial symmetry is found in the animals of___________? |
| A. | Protozoa |
| B. | Porifera |
| C. | Cnidaria |
| D. | All of these |
| Answer» D. All of these | |
| 834. |
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. | |
| 835. |
Of the following which one is not the characteristic of triploblasts? |
| A. | All of them have blood vascular system |
| B. | They may be coelomate pseudocoelomate or acoelomate |
| C. | They are included in grade bilaterian |
| D. | All of them have digestive system |
| Answer» B. They may be coelomate pseudocoelomate or acoelomate | |
| 836. |
Aschelminthes is also known as____________? |
| A. | Protozoans |
| B. | Eumatazoa |
| C. | Nematodes |
| D. | Protoctist ancestors |
| Answer» D. Protoctist ancestors | |
| 837. |
The animals in which coelom is formed due to splitting of mesocerm are known as____________? |
| A. | Pseudocoelous |
| B. | Schizocoelous |
| C. | Enterocoelous |
| D. | Emphicoelous |
| Answer» C. Enterocoelous | |
| 838. |
Shell of egg is leathery in appearance in___________? |
| A. | Amphibians |
| B. | Reptiles |
| C. | Birds |
| D. | Prototherians |
| Answer» C. Birds | |
| 839. |
All the animals of the grade radiata are____________? |
| A. | Diploblastic |
| B. | Triploblastic |
| C. | Both |
| D. | Unicellular |
| Answer» B. Triploblastic | |
| 840. |
The name animal is derived from the word__________? |
| A. | Anima |
| B. | Anemia |
| C. | Aname |
| D. | All of these |
| Answer» B. Anemia | |
| 841. |
Of the following which one is not included in Proterostomes? |
| A. | Arthropods |
| B. | Hemichordates |
| C. | Annelids |
| D. | Molluses |
| Answer» C. Annelids | |
| 842. |
Of the following which one is not found in series proterostomia? |
| A. | Annelida |
| B. | Arthropoda |
| C. | Mollusea |
| D. | Echinodermata |
| Answer» E. | |
| 843. |
The single main opening of the sponge cavity is____________? |
| A. | Osculum |
| B. | Ostia |
| C. | Spongocoel |
| D. | None of these |
| Answer» B. Ostia | |
| 844. |
Body is globular in_________? |
| A. | Cake urchin |
| B. | Sea Urchin |
| C. | Sea cucumber |
| D. | Brittle star |
| Answer» C. Sea cucumber | |
| 845. |
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 | |
| 846. |
In sponges fertilization takes place in____________? |
| A. | Ectoderm |
| B. | Mesenchyme |
| C. | Endoderm |
| D. | Uterus |
| Answer» C. Endoderm | |
| 847. |
Sperms released in water are carried to the mesenchyme in sponges by__________? |
| A. | Amoeboid cell |
| B. | Stipules |
| C. | Spicules |
| D. | Spines |
| Answer» B. Stipules | |
| 848. |
_______ are the first group of invertebrates which have developed a closed circulatory system. |
| A. | Nematods |
| B. | Annelids |
| C. | Arthropods |
| D. | Molluscs |
| Answer» C. Arthropods | |
| 849. |
80% of the food of sponges consists of__________? |
| A. | Detrital organic particles |
| B. | Zooplankton and small animals |
| C. | Phytoplanktons |
| D. | all of these |
| Answer» B. Zooplankton and small animals | |
| 850. |
Which of the following are motile zooids in cnidarians? |
| A. | Polyps |
| B. | Medusae |
| C. | Both of these |
| D. | None of these |
| Answer» C. Both of these | |