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.
| 951. |
Each human kidney receives _______% of total cardiac out put? |
| A. | 10% |
| B. | 20% |
| C. | 30% |
| D. | 40% |
| Answer» C. 30% | |
| 952. |
Each ach nephridium of earthworm opens to the exterior by__________? |
| A. | Nephrostome |
| B. | Nephridiopore |
| C. | Flame cell |
| D. | Anus |
| Answer» C. Flame cell | |
| 953. |
E. coli and example of____________? |
| A. | Aerobic bacteria |
| B. | Anaerobic bacteria |
| C. | Facultative bacteria |
| D. | Microaerophilic |
| Answer» D. Microaerophilic | |
| 954. |
E. coli and example of entrobacteriace is important for causing diarrheal diseases its size is____________? |
| A. | 0.1-600 um |
| B. | 100-200 nm |
| C. | 1.1-1.5 um (width) 2.0-6.0 um (length) |
| D. | 0.75-1.25 um |
| Answer» D. 0.75-1.25 um | |
| 955. |
During the process of cell division which of the following divides first? |
| A. | cytodplasm |
| B. | vacuoles |
| C. | mitochondria |
| D. | nucleus |
| Answer» E. | |
| 956. |
During rest the breathing occurs rhythmically at the frequency of _________ times per minute in human? |
| A. | 16-30 |
| B. | 15-20 |
| C. | 5?10 |
| D. | 6?12 |
| Answer» C. 5?10 | |
| 957. |
During digesting the phagocytosed food particles vesicles formed from fusion of phagocytic vacuole with the enzymes secreted by Golgi apparantus are called_______? |
| A. | Lysosomes |
| B. | Primary lysosomes |
| C. | Secondary lysosomes |
| D. | Food vacuole |
| Answer» D. Food vacuole | |
| 958. |
Due to which property of Adiantum and example of Filicinae is called Maidenhairfern________________? |
| A. | Its short thick branched horizontally growing rhizome |
| B. | Fibrous adventituous roots arise from the lower side of rhizome |
| C. | Shows heteromorphic alternation of generation |
| D. | Stipe (stalk) and rachis of leaf have black smooth and shiny hair like structures |
| Answer» E. | |
| 959. |
Double fertilization occurs in_________? |
| A. | All plants |
| B. | All seed plants |
| C. | Gymnosperms |
| D. | Angiosperms |
| Answer» E. | |
| 960. |
Double fertilization is feature of____________? |
| A. | Ferns |
| B. | Whisk ferns |
| C. | Gymnosperms |
| D. | Angiosperms |
| Answer» E. | |
| 961. |
Dorsal root of spinal nerves contain only __________ ? |
| A. | Effectors neurons |
| B. | Receptor neurons |
| C. | Stimulators |
| D. | Detector neurons |
| Answer» C. Stimulators | |
| 962. |
Dolly, the sheep was a highly successful clone from a somatic cell, reported back in________? |
| A. | 1993 |
| B. | 1994 |
| C. | 1995 |
| D. | 1996 |
| Answer» E. | |
| 963. |
DNA or RNA of viruses is enclosed in _______________ coat? |
| A. | Protein |
| B. | Carbohydrate |
| C. | Lipid |
| D. | DNA |
| Answer» B. Carbohydrate | |
| 964. |
Division of nucleus is termed as___________ ? |
| A. | Karyokinesis |
| B. | Cytokinesis |
| C. | Anaphase |
| D. | Meiosis |
| Answer» B. Cytokinesis | |
| 965. |
Disease which transferred from animal to Human is_________? |
| A. | Sporadic |
| B. | Epidemic |
| C. | Endemic |
| D. | Zoonosis |
| Answer» E. | |
| 966. |
Dipeptides into amino acids are are converted through_____________? |
| A. | Amino peptidase |
| B. | Erypsin |
| C. | Pepsin |
| D. | Trypsin |
| Answer» C. Pepsin | |
| 967. |
Different species of plants and animals living in the same habitat is called ___________? |
| A. | Population |
| B. | Community |
| C. | Biome |
| D. | Habitat |
| Answer» C. Biome | |
| 968. |
Different species of plants and animals living in the same habitat is called? |
| A. | Population |
| B. | Community |
| C. | Biome |
| D. | Habitat |
| Answer» C. Biome | |
| 969. |
Diatoms belong to___________? |
| A. | Chrysophyta |
| B. | Bacillariophyceae |
| C. | Xanthophyceae |
| D. | Both A. and B. |
| Answer» E. | |
| 970. |
Diatoms stay afloat due to___________? |
| A. | Flagella |
| B. | Stored lpids |
| C. | Pseudopodia |
| D. | All of these |
| Answer» C. Pseudopodia | |
| 971. |
Diatoms are found in__________? |
| A. | Phytoplanktonic population |
| B. | Freshwater lakes and ponds |
| C. | Marine environment |
| D. | All of the above |
| Answer» E. | |
| 972. |
Diatomaceous earth is used for making __________? |
| A. | Fertilizers |
| B. | Weedicides |
| C. | Insecticides |
| D. | Fire proof bricks |
| Answer» E. | |
| 973. |
Diatom frustule/ shell is made of_____________? |
| A. | Silica |
| B. | Calcium carbonate |
| C. | Manesium carbonate |
| D. | Both B. and C. |
| Answer» B. Calcium carbonate | |
| 974. |
Diameter of thick filament is____________? |
| A. | 7 nm |
| B. | 8 nm |
| C. | 16nm |
| D. | 10-100 nm |
| Answer» D. 10-100 nm | |
| 975. |
Detachment of myosin head and actin in rigor mortis occurs due to__________? |
| A. | stored ATP in body |
| B. | hypercalcemia |
| C. | autolysis in body |
| D. | hyperactivity of mitochondria |
| Answer» E. | |
| 976. |
Destruction of all life forms is called___________? |
| A. | Sterilization |
| B. | Disinfection |
| C. | Antisepsis |
| D. | Preservation |
| Answer» B. Disinfection | |
| 977. |
Deoxygenated blood first enters in _________ part in fishes? |
| A. | Sinus venosus |
| B. | Right atrium |
| C. | Left atrium |
| D. | Conus arteriosus |
| Answer» B. Right atrium | |
| 978. |
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 | |
| 979. |
Deficiency of which of the following causes chlorosis__________________? |
| A. | Nitrogen |
| B. | Magnesium |
| C. | Iron |
| D. | Both A and B |
| Answer» E. | |
| 980. |
Deficiency of vitamin C will cause:__________? |
| A. | Beri-Beri |
| B. | Architis |
| C. | Scurvy |
| D. | Night-blindness |
| Answer» D. Night-blindness | |
| 981. |
Deficiency of K+ causes_____________? |
| A. | Stunted growth & strong chlorosis |
| B. | No electron transport chains |
| C. | Premature death of leaves |
| D. | Stunted growth of roots |
| Answer» D. Stunted growth of roots | |
| 982. |
Deficiency of ___________ causes yellowing in plants? |
| A. | Magnesium |
| B. | Iron |
| C. | Chlorine |
| D. | Oxygen |
| Answer» B. Iron | |
| 983. |
Death cap/death angel (Amanita) and Jack O Latern mushroom are examples of__________? |
| A. | Edible mushrooms |
| B. | Poisonous mushrooms |
| C. | Both of these |
| D. | None of these |
| Answer» C. Both of these | |
| 984. |
Cytoskeleton involved in assembly and disassembly of the spindle during mitosis is of_________? |
| A. | Microtubules |
| B. | Microfilaments |
| C. | Intermediate filaments |
| D. | None of these |
| Answer» B. Microfilaments | |
| 985. |
Cytoplasmic strands that extend through pores in adjacent cell walls are known as___________? |
| A. | Pseudopods |
| B. | Symplasts |
| C. | Plasmodesmata |
| D. | Pili |
| Answer» D. Pili | |
| 986. |
Cyanobacteria reproduce by____________? |
| A. | Binary fission |
| B. | Mitosis |
| C. | Meiosis |
| D. | Conjugation |
| Answer» B. Mitosis | |
| 987. |
Cyanobacteria have ________ cell wall? |
| A. | Gram +ve. |
| B. | Gram – ve. |
| C. | Acid fast |
| D. | Cellulose rich |
| Answer» C. Acid fast | |
| 988. |
Cuticular transpiration is _________ of total transpiration? |
| A. | 6-8% |
| B. | 5-7% |
| C. | 7-9% |
| D. | 4-6% |
| Answer» C. 7-9% | |
| 989. |
Cuticular transpiration is _____________ of total transpiration? |
| A. | 1-2% |
| B. | 3-4% |
| C. | 5-7% |
| D. | 90% |
| Answer» D. 90% | |
| 990. |
Crysanthemum is propagated by___________? |
| A. | Suckers |
| B. | corms |
| C. | corals |
| D. | None |
| Answer» B. corms | |
| 991. |
Crop rotation helps in______________? |
| A. | Growth of pathogens |
| B. | Soil Infertility |
| C. | Slowing of crops growth |
| D. | Eradication of disease |
| Answer» E. | |
| 992. |
Corolla and calyx collectively termed as___________? |
| A. | Prienth |
| B. | Hermaphrodite |
| C. | Complete flower |
| D. | Sexual whorls |
| Answer» C. Complete flower | |
| 993. |
Cooley’s anemia is another name used for___________? |
| A. | Leucemia |
| B. | Thalassaemia |
| C. | Sickle cell anemia |
| D. | None of these |
| Answer» C. Sickle cell anemia | |
| 994. |
Conversion of ammonia or ammonium ion into nitrites during nitrogen cycle occurs due_____________? |
| A. | Rhizobium |
| B. | Nitrosomonas |
| C. | Nitrobacter |
| D. | Pseudomonas |
| Answer» C. Nitrobacter | |
| 995. |
Control of organisms by using living organisms is called_______? |
| A. | Bioremediation |
| B. | Integrated disease management |
| C. | Antisepsis |
| D. | Biological control |
| Answer» E. | |
| 996. |
_____________________ contains the green chemical called chlorophyll. |
| A. | Cytoplasm |
| B. | Cell membrane |
| C. | Chloroplasts |
| D. | Vacuole |
| Answer» D. Vacuole | |
| 997. |
Constricting ring around nematode is formed by_____________? |
| A. | Arthrobotrys |
| B. | Pleurotus ostreatus |
| C. | Mildews |
| D. | All of these |
| Answer» B. Pleurotus ostreatus | |
| 998. |
Conclusion of Mendels work latter became a_____________? |
| A. | Scientific hypothesis |
| B. | Theory |
| C. | Scientific law |
| D. | Productive theory |
| Answer» D. Productive theory | |
| 999. |
___________ component of cell wall has grreat affinity with water? |
| A. | Lignin |
| B. | Cellulose |
| C. | Pectin |
| D. | All of these |
| Answer» E. | |
| 1000. |
Complex symptoms like severe pneumonia vascular tumor sudden weight loss swollen lymph nodes and immune deficiency are features of: |
| A. | Polio |
| B. | Hepatitis |
| C. | AIDS |
| D. | HIV |
| Answer» D. HIV | |