MCQOPTIONS
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MCQOPTIONS
This section includes 1075 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.
| 851. |
The element which is the most abundant in the human body is |
| A. | oxygen |
| B. | carbon |
| C. | iron |
| D. | nitrogen |
| Answer» B. carbon | |
| 852. |
What may be the cause of malfunctioning of thyriod gland ? |
| A. | Iodine deficiency |
| B. | Iron deficiency |
| C. | Calcium deficiency |
| D. | Vitamin C |
| Answer» B. Iron deficiency | |
| 853. |
By which the sex of a child is determined before birth ? |
| A. | Sperms of father |
| B. | Foetus of mother |
| C. | Both (A) and (B) |
| D. | Nutrition of mother |
| Answer» C. Both (A) and (B) | |
| 854. |
What are the basic units from which human spare parts can be created? |
| A. | Nerve cells |
| B. | Stem cells |
| C. | Heart cells |
| D. | Kidney cells |
| Answer» C. Heart cells | |
| 855. |
Fermentation is a process of decomposition of an organic compound by : |
| A. | catalysts |
| B. | enzymes |
| C. | carbanions |
| D. | free radicals |
| Answer» C. carbanions | |
| 856. |
Who discovered sex hormones? |
| A. | Dreser |
| B. | Eugen Steinach |
| C. | Edward Calvin |
| D. | Samuel Cohen |
| Answer» C. Edward Calvin | |
| 857. |
The element which is the most abundant in the human body is: |
| A. | Oxygen |
| B. | Carbon |
| C. | Iron |
| D. | Nitrogen |
| Answer» B. Carbon | |
| 858. |
Sweetex used by the diabetic patients has energy content of : |
| A. | Five calories |
| B. | Ten calories |
| C. | Hundred calories |
| D. | Zero calories |
| Answer» E. | |
| 859. |
Who discovered Cholera germs? |
| A. | Robert Koch |
| B. | Rene Laennec |
| C. | Dreser |
| D. | Hansen |
| Answer» B. Rene Laennec | |
| 860. |
Which of the following blood groups may be present in the children of a couple having blood groups A and B, respectively? |
| A. | A and B only |
| B. | A, B and AB |
| C. | A, B, AB and O |
| D. | AB only |
| Answer» D. AB only | |
| 861. |
Oxygen liberated during photosynthesis is coming from : |
| A. | Carbon dioxide |
| B. | Water |
| C. | Bresk down of chlorophy II |
| D. | Atmosphere |
| Answer» C. Bresk down of chlorophy II | |
| 862. |
All the progeny obtained from a single plant by vegetative propagation are called |
| A. | Clones |
| B. | Pure line |
| C. | Ind-red line |
| D. | Pedigree line |
| Answer» B. Pure line | |
| 863. |
Clove, the commonly used spice, is obtained from the : |
| A. | root |
| B. | stem |
| C. | flower bud |
| D. | fruit |
| Answer» D. fruit | |
| 864. |
Why excessive heating and repeated use of cooking oil is most undesirable? |
| A. | The oil vapours can cause indoor pollution |
| B. | Carcinogenic substances like benzpyrene are produced |
| C. | Nutrient value of food is lost |
| D. | Loss and wastage of oil |
| Answer» C. Nutrient value of food is lost | |
| 865. |
ELISA test is employed to diagnose : |
| A. | Polio virus |
| B. | AIDS antibodies |
| C. | Tuberculosis bacterium |
| D. | Cancer |
| Answer» D. Cancer | |
| 866. |
Green House Effect means |
| A. | cultivation of crops in green house to conserve heat |
| B. | trapping of solar energy due to carbon dioxide gases |
| C. | trapping of solar energy by earth upper surface |
| D. | increase of heat due to atmospheric pollution |
| Answer» C. trapping of solar energy by earth upper surface | |
| 867. |
Potassium meta-bisulphite is used as a food preservative for |
| A. | Squash |
| B. | Tomato Ketchup |
| C. | Fruit Juices |
| D. | Pickles |
| Answer» D. Pickles | |
| 868. |
ELISA test is employed to diagnose |
| A. | Polio virus |
| B. | AIDS antibodies |
| C. | Tuberculosis bacterium |
| D. | Cancer |
| Answer» C. Tuberculosis bacterium | |
| 869. |
The presence of pollutants in the environment is usually expressed in ppm, where ppm stands for: |
| A. | particles per mole |
| B. | purity per microgram |
| C. | pollutant prevent measures |
| D. | parts per million |
| Answer» E. | |
| 870. |
Universal donors are people with the blood group |
| A. | A |
| B. | B |
| C. | O |
| D. | AB |
| Answer» D. AB | |
| 871. |
Reserpine is used to : |
| A. | reduce high blood pressure |
| B. | increase blood pressure when it is low |
| C. | alleviate pain |
| D. | cure arthritis |
| Answer» B. increase blood pressure when it is low | |
| 872. |
Odontology is the branch of science which deals with the study of |
| A. | Teeth |
| B. | Ontogeny |
| C. | Bone |
| D. | Ageing |
| Answer» B. Ontogeny | |
| 873. |
Where does the cabbage store food ? |
| A. | Leaves |
| B. | Stem |
| C. | Fruit |
| D. | Root |
| Answer» B. Stem | |
| 874. |
Table sugar is which type of sugar ? |
| A. | Fructose |
| B. | Galactose |
| C. | Glucose |
| D. | Sucrose |
| Answer» E. | |
| 875. |
Saprophytes are the organisms which depend for food on |
| A. | living plants |
| B. | living animals |
| C. | |
| D. | dead and decaying material |
| E. | inorganic chemical compounds |
| Answer» D. dead and decaying material | |
| 876. |
The largest cell in the human body is : |
| A. | Nerve cell |
| B. | Muscle cell |
| C. | |
| D. | Liver cell |
| E. | Kidney cell |
| Answer» B. Muscle cell | |
| 877. |
Aquatic animal with the most developed intelligence is |
| A. | Shark |
| B. | Whale |
| C. | Flying fish |
| D. | Sea horse |
| Answer» B. Whale | |
| 878. |
Which one of the following is an autotroph? |
| A. | Butterfly |
| B. | Algae |
| C. | Grasshopper |
| D. | Mushroom |
| Answer» C. Grasshopper | |
| 879. |
Quantity of fresh air required for a man is |
| A. | 1000 cubic feet of air for every 20 minutes |
| B. | 1000 cubic feet of air for every 20 seconds |
| C. | 1000 cubic feet of air for every 10 minutes |
| D. | 1000 cubic feet of air for every 10 seconds |
| Answer» B. 1000 cubic feet of air for every 20 seconds | |
| 880. |
Who coined the term gene ? |
| A. | Mendel |
| B. | Johannsen |
| C. | Watson |
| D. | Beadle |
| Answer» C. Watson | |
| 881. |
Deficiency of iron causes : |
| A. | Goitre |
| B. | Polio |
| C. | Rickets |
| D. | Scurvy |
| E. | None of these |
| Answer» F. | |
| 882. |
An invertebrate does not have |
| A. | Notochord |
| B. | Body cavity |
| C. | Haemocoel |
| D. | Gills |
| Answer» B. Body cavity | |
| 883. |
An organism that transmits disease from one individual to another is called |
| A. | Hybrid |
| B. | Fragment |
| C. | Vector |
| D. | Clone |
| Answer» D. Clone | |
| 884. |
The tusk of elephant is an enormously enlarged : |
| A. | upper incisor |
| B. | upper canine |
| C. | lower canine |
| D. | lower incisor |
| Answer» B. upper canine | |
| 885. |
Iodine solution is used to test the presence of |
| A. | Sugar |
| B. | Proteins |
| C. | Starch |
| D. | Fats |
| Answer» D. Fats | |
| 886. |
Which of the following fuels causes minimum environmental pollution ? |
| A. | Diesel |
| B. | Kerosene |
| C. | Hydrogen |
| D. | Coal |
| Answer» D. Coal | |
| 887. |
An edible underground stem is |
| A. | Ginger |
| B. | Sweet-potato |
| C. | Sugarcane |
| D. | Radish |
| Answer» B. Sweet-potato | |
| 888. |
Which of the following is known an body builder ? |
| A. | Protein |
| B. | Carbohydrates |
| C. | Vitamins |
| D. | Fats |
| Answer» B. Carbohydrates | |
| 889. |
Soilless agriculture refers to |
| A. | Hydroponics |
| B. | Hygroponics |
| C. | Sericulture |
| D. | Inter cropping |
| Answer» B. Hygroponics | |
| 890. |
The blood vessel which carries oxygenated blood to the liver is |
| A. | Coronary Artery |
| B. | Pulmonary Artery |
| C. | Carotid Artery |
| D. | Hepatic Artery |
| Answer» E. | |
| 891. |
A rare and endangered animal in Silent Valley is : |
| A. | Musk deer |
| B. | Tiger |
| C. | Lion-tailed macaque |
| D. | Rhinosores |
| Answer» D. Rhinosores | |
| 892. |
Which of the following agricultural practices have been primarily responsible for pollution of our water resources ? |
| A. | B and C |
| B. | A, C and D |
| C. | A and B |
| D. | A, B and D |
| Answer» B. A, C and D | |
| 893. |
Stamens are fused with each other by their anthers and also with the petals in : |
| A. | Leguminosae |
| B. | Liliaceae |
| C. | Compositae |
| D. | Euphorbiaceae |
| Answer» D. Euphorbiaceae | |
| 894. |
Which are the largest fixator of solar energy ? |
| A. | Bacteria |
| B. | Protozoa |
| C. | Fungi |
| D. | Green plants |
| Answer» E. | |
| 895. |
Wisdom teeth is the : |
| A. | 1st molar teeth |
| B. | 2nd molar teeth |
| C. | 3rd molar teeth |
| D. | 4th molar teeth |
| Answer» D. 4th molar teeth | |
| 896. |
Hydroponics is a method of culture of plants without using |
| A. | water |
| B. | light |
| C. | sand |
| D. | soil |
| Answer» E. | |
| 897. |
Which of the following tests helps in diagnosis of cancer ? |
| A. | Urine test |
| B. | Blood test |
| C. | Biopsy |
| D. | X-Ray |
| Answer» D. X-Ray | |
| 898. |
Fruits of this plant are found underground : |
| A. | Potato |
| B. | Carrot |
| C. | Groundnut |
| D. | Onion |
| Answer» D. Onion | |
| 899. |
Coupling and repulsion are the two states of : |
| A. | linkage |
| B. | chiasma |
| C. | mutation |
| D. | crossing over |
| Answer» B. chiasma | |
| 900. |
Which of the following weeds has been found useful to check water pollution caused by industrial effluents ? |
| A. | Parthenium |
| B. | Elephant grass |
| C. | Water hyacinth |
| D. | Both (A) and (B) |
| Answer» E. | |