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.
| 1001. |
Complex specialized flagellates living symbiotically in the gut of termites are___________? |
| A. | Trichonymphas |
| B. | Trypanosoma |
| C. | Euglena |
| D. | Radiolarians |
| Answer» B. Trypanosoma | |
| 1002. |
Complete breakdown of glucose molecule takes place in which of the following? |
| A. | Alcoholic fermentation |
| B. | Lactic acid fermentation |
| C. | Aerobic respiration |
| D. | All of these |
| Answer» D. All of these | |
| 1003. |
Competition between species will be greatest if they attempt to occupy the same___________? |
| A. | Ecosystem |
| B. | Community |
| C. | Habitat |
| D. | Niche |
| Answer» E. | |
| 1004. |
Communities are ________ collection of organisms? |
| A. | Static |
| B. | Dynamic |
| C. | May be static or dynamic |
| D. | None of these |
| Answer» C. May be static or dynamic | |
| 1005. |
Commonly in other plants than tall ones the speed of upward movement of water is____________? |
| A. | 8mh-1 |
| B. | 1 mh-1 |
| C. | 7 mh-1 |
| D. | 4 mh-1 |
| Answer» C. 7 mh-1 | |
| 1006. |
Collagen fibers of bone are hardened by deposition of_____________? |
| A. | Ca & PO4 |
| B. | CaCO3 |
| C. | CaSO4 |
| D. | SiO2 |
| Answer» B. CaCO3 | |
| 1007. |
Coenocytic hyphae are also known as______________? |
| A. | Septate |
| B. | Perforated hyphae |
| C. | Aseptate |
| D. | Uninucleate hyphae |
| Answer» D. Uninucleate hyphae | |
| 1008. |
Coelom that develops from the archenteron as outpouching is__________? |
| A. | Pseudocoelom |
| B. | Enterocoelom |
| C. | Schizocoelom |
| D. | None of these |
| Answer» C. Schizocoelom | |
| 1009. |
Coelom is lined by__________? |
| A. | Parietal mesoderm |
| B. | Visceral mesoderm |
| C. | Mesoderm |
| D. | Both A & B |
| Answer» E. | |
| 1010. |
Coelom is divided into septa in case of:__________? |
| A. | Molluscs |
| B. | Annelids |
| C. | Sponges |
| D. | Cniderians |
| Answer» C. Sponges | |
| 1011. |
Coccobacillus has a shape similar to________________? |
| A. | Diplobacillus |
| B. | Sarcina |
| C. | Egg |
| D. | None of these |
| Answer» D. None of these | |
| 1012. |
Co-ordination results in_____________? |
| A. | Regulation of body functions |
| B. | Organization of body functions |
| C. | Integration of body functions |
| D. | All of these |
| Answer» E. | |
| 1013. |
Co-ordination in man is brought about by___________? |
| A. | Nervous system |
| B. | Endocrine system |
| C. | Both of these |
| D. | none of these |
| Answer» D. none of these | |
| 1014. |
Co-enzyme is often formed from ? |
| A. | lipid |
| B. | protein |
| C. | inorganic ion |
| D. | vitamin |
| Answer» E. | |
| 1015. |
Cn(H2O)n. is a general formula of_____________? |
| A. | Monosaccharides |
| B. | Oligosaccharides |
| C. | Ploysacharides |
| D. | Carbohydrates |
| Answer» E. | |
| 1016. |
Circulatory system is open type in all of the following except:___________? |
| A. | Arthropoda |
| B. | Gastropoda |
| C. | Pelecypoda |
| D. | Cephalopoda |
| Answer» E. | |
| 1017. |
Circular disc shaped structure with a round hole is ___________ ? |
| A. | Iris |
| B. | Pupil |
| C. | Horoid coat |
| D. | Ciliary body |
| Answer» B. Pupil | |
| 1018. |
Chlorosis, i.e., yellowish hue on the leaves results from_____________? |
| A. | Accumulation of toxic waste products in leaves |
| B. | Deficiency of chlorophyll |
| C. | Short supplies of mineral nutrients in the soil |
| D. | All of these |
| Answer» E. | |
| 1019. |
Chlorophylls mainly absorb _________ wavelengths? |
| A. | Orange – blue |
| B. | Violet – red |
| C. | Yellow – orange |
| D. | Orange – red |
| Answer» E. | |
| 1020. |
Chlorophylls are found embedded in the __________ membranes? |
| A. | Stroma |
| B. | Grana |
| C. | Thylakoid |
| D. | Intergrana |
| Answer» D. Intergrana | |
| 1021. |
Chlorophyll molecule contrains __________ as central metal ion. |
| A. | Fe2+ |
| B. | Mg2+ |
| C. | Zn2+ |
| D. | Cu2+ |
| Answer» C. Zn2+ | |
| 1022. |
Chlorophyll is a/an _____ molecule? |
| A. | Inorganic |
| B. | Cationic |
| C. | Anionic |
| D. | Organic |
| Answer» E. | |
| 1023. |
Chlorophyll is insoluble in_____________? |
| A. | Carbon tetrachloride |
| B. | Alcohol |
| C. | Organic solvents |
| D. | Water |
| Answer» E. | |
| 1024. |
Chitin in cockroach is absent in____________? |
| A. | Epicuticle |
| B. | Exocuticle |
| C. | Endocuticle |
| D. | All of these |
| Answer» B. Exocuticle | |
| 1025. |
Chemically auxins are____________? |
| A. | Indole propionic acid |
| B. | Indole carboxylic acid |
| C. | Indole acetaldehyde |
| D. | Indole acetic acid |
| Answer» E. | |
| 1026. |
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 | |
| 1027. |
Chemical component/s less in eukaryotic cell as compared to prokaryotic cell is / are (i) lipids (ii) carbodydrates (iii) proteins (iv) DNA_________________? |
| A. | i & ii |
| B. | iii & iv |
| C. | i ii iii & iv |
| D. | iv only |
| Answer» E. | |
| 1028. |
Chalk is gradually formed of dead______________? |
| A. | Actinopods |
| B. | Foraminiferans |
| C. | Apicomplexans |
| D. | Radiolarians |
| Answer» C. Apicomplexans | |
| 1029. |
Certain types of whales are also __________ feeder? |
| A. | Fluid |
| B. | Macrophagous |
| C. | Filter |
| D. | None of these |
| Answer» D. None of these | |
| 1030. |
Centrioles are composed of ________ triplets of microtubules. |
| A. | 3 |
| B. | 9 |
| C. | 10 |
| D. | 15 |
| Answer» C. 10 | |
| 1031. |
Centric discoid form of diatoms is__________? |
| A. | Diplaneis |
| B. | Coscinodiscus |
| C. | Camphyloneiscus |
| D. | Stephanodis |
| Answer» C. Camphyloneiscus | |
| 1032. |
Central nervous system of man consists of______________? |
| A. | Brain |
| B. | Spinal cord |
| C. | Both of these |
| D. | none of these |
| Answer» D. none of these | |
| 1033. |
Cellulose is the major component of__________? |
| A. | Primary wall |
| B. | Secondary wall |
| C. | Middle lamella |
| D. | all of the above |
| Answer» B. Secondary wall | |
| 1034. |
Cellular respiration is essentially a/an _____________ process? |
| A. | Oxidation |
| B. | Reduction |
| C. | Redox |
| D. | None of the above |
| Answer» B. Reduction | |
| 1035. |
Cellular organelles related with H2O2 are___________? |
| A. | Glyoxisomes |
| B. | Lysosomes |
| C. | Peroxisomes |
| D. | Ribosomes |
| Answer» D. Ribosomes | |
| 1036. |
Cellular digestion is associated with which organelle__________? |
| A. | Mitochondria |
| B. | Golgi bodies |
| C. | Plastids |
| D. | Lysosomes |
| Answer» E. | |
| 1037. |
_________________ cells of phloem are directly involved in transport of organic solutes? |
| A. | Parenchyma |
| B. | Companion cell |
| C. | Tracheid |
| D. | Sieve element |
| Answer» E. | |
| 1038. |
Cell wass of Archaeobacteria does not contain_____________________? |
| A. | Peptidoglycan |
| B. | Proteins |
| C. | Glycoproteins |
| D. | Polysaccharides |
| Answer» B. Proteins | |
| 1039. |
cells are of__________types? |
| A. | 4 |
| B. | 3 |
| C. | 2 |
| D. | 1 |
| Answer» D. 1 | |
| 1040. |
Cell wall is richly impregnated with silica in__________? |
| A. | Rhodophyta |
| B. | Phaeophyta |
| C. | Baciliariophyta |
| D. | Euglenophyta |
| Answer» D. Euglenophyta | |
| 1041. |
Cell wall is extremely well preserved in fossil specimens in__________? |
| A. | Diatoms |
| B. | Dinoflagellates |
| C. | Slime moulds |
| D. | None of these |
| Answer» B. Dinoflagellates | |
| 1042. |
Cell wall is absent in___________? |
| A. | Cocci |
| B. | Bacilli |
| C. | Mycobacterium |
| D. | Mycoplasma |
| Answer» E. | |
| 1043. |
Cell wall is the non living , outermost boundary of__________cell? |
| A. | plant |
| B. | bacterial |
| C. | fungal |
| D. | all the above |
| Answer» E. | |
| 1044. |
Cell membrane under resting conditions is impermeable to all the ions except_____________? |
| A. | Na+ |
| B. | K+ |
| C. | Cl- |
| D. | PO4-2 |
| Answer» C. Cl- | |
| 1045. |
Carotenoids perform protective function in_____________? |
| A. | Animals |
| B. | Plants |
| C. | Both of these |
| D. | None of these |
| Answer» D. None of these | |
| 1046. |
Carbon commonly combines with______________? |
| A. | H |
| B. | N & O |
| C. | P & S |
| D. | All of these |
| Answer» E. | |
| 1047. |
Carbon atom is_____________? |
| A. | Monovalent |
| B. | Divalent |
| C. | Trivalent |
| D. | Tetravalent |
| Answer» E. | |
| 1048. |
Carbohydrates, fats & proteins are essential for_______________? |
| A. | Metabolic processes of an organism |
| B. | Providing energy |
| C. | Formation of sturctures |
| D. | All of these |
| Answer» E. | |
| 1049. |
Capillaries are the example of_________? |
| A. | Organ System |
| B. | Cell |
| C. | Organ |
| D. | Tissue |
| Answer» B. Cell | |
| 1050. |
C6H12O6 + 6O2 ? 6CO2 + 6H20 + ENERGY represents:____________? |
| A. | Photosynthesis |
| B. | Aerobic respiration |
| C. | Anaerobic respiration |
| D. | Respiration |
| Answer» C. Anaerobic respiration | |