MCQOPTIONS
Saved Bookmarks
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.
| 901. |
Which from the following diseases usually spreads through milk? |
| A. | Tuberculosis |
| B. | Jaundice |
| C. | Diphtheria |
| D. | Cholera |
| Answer» B. Jaundice | |
| 902. |
In coriander, the useful parts are |
| A. | roots & leaves |
| B. | leaves & flowers |
| C. | leaves & dried fruits |
| D. | flowers & dried fruits |
| Answer» D. flowers & dried fruits | |
| 903. |
The method not used as a Biological control is : |
| A. | Use of predators of a pest. |
| B. | Pheromone traps |
| C. | Use of pesticides |
| D. | Use of neem extracts |
| Answer» D. Use of neem extracts | |
| 904. |
Transfer of genetic information from one generation to the next generation is by |
| A. | RNA |
| B. | Codon |
| C. | DNA |
| D. | messenger RNA |
| Answer» D. messenger RNA | |
| 905. |
During dehydration what is the substance that is usually lost by the body ? |
| A. | Sugar |
| B. | Sodium chloride |
| C. | Calcium phosphate |
| D. | Potassium chloride |
| Answer» C. Calcium phosphate | |
| 906. |
In India, Dugong (sea cow) is found in the bioreserve site of: |
| A. | Gulf of Mannar |
| B. | Nokrek |
| C. | Manas |
| D. | Sundarban |
| Answer» B. Nokrek | |
| 907. |
Kidney disease in man is caused by the pollutant : |
| A. | Cadmium |
| B. | Iron |
| C. | Cobalt |
| D. | Carbon |
| Answer» B. Iron | |
| 908. |
RBCs do not perform aerobic respiration because these do not contain |
| A. | Mitochondria |
| B. | Nucleus |
| C. | Endoplasmic Reticulum |
| D. | Lysosomes |
| Answer» B. Nucleus | |
| 909. |
The plants, which grow under water stress conditions of deserts are : |
| A. | Epiphytes |
| B. | Xerophytes |
| C. | Heliophytes |
| D. | Sciophytes |
| Answer» C. Heliophytes | |
| 910. |
Which plant is called Herbal Indian Doctor ? |
| A. | Amla |
| B. | Mango |
| C. | Neem |
| D. | Tulsi |
| Answer» B. Mango | |
| 911. |
An insect - catching plant is : |
| A. | Australian Acacia |
| B. | Smilax |
| C. | Nepenthes |
| D. | Nerium |
| Answer» D. Nerium | |
| 912. |
Which of the following is a true fish ? |
| A. | Silver fish |
| B. | Star fish |
| C. | Dog fish |
| D. | Shell fish |
| Answer» D. Shell fish | |
| 913. |
The animal which uses sounds as its eyes is |
| A. | Dog |
| B. | Cat |
| C. | Snake |
| D. | Bat |
| Answer» E. | |
| 914. |
The type of fruit obtained from a multicarpillary, apocarpous gynoecium is: |
| A. | composite |
| B. | aggregate |
| C. | simple |
| D. | multiple |
| Answer» C. simple | |
| 915. |
The largest invertebrate is a/an |
| A. | Sponge |
| B. | Mollusc |
| C. | Arthropod |
| D. | Echinoderm |
| Answer» C. Arthropod | |
| 916. |
The pH of human blood is |
| A. | 7.2 |
| B. | 7.8 |
| C. | 6.6 |
| D. | |
| E. | 7.4 |
| Answer» E. 7.4 | |
| 917. |
Pregnant women usually become deficient in |
| A. | Sodium and Calcium |
| B. | Iron and Sodium |
| C. | Calcium and Iron |
| D. | Magnesium and Iron |
| Answer» D. Magnesium and Iron | |
| 918. |
Mycobacterium leprae is a |
| A. | Bacillus |
| B. | Coccus |
| C. | Spiral |
| D. | Spore |
| Answer» B. Coccus | |
| 919. |
The age of trees is determined by its : |
| A. | girth |
| B. | height |
| C. | growth rings |
| D. | general appearance |
| Answer» D. general appearance | |
| 920. |
Life originated by chemosynthesis was proved in the laboratory by : |
| A. | Sanger |
| B. | Pasteur |
| C. | Miller |
| D. | Aristotle |
| Answer» D. Aristotle | |
| 921. |
Which of the following structures present in mammalian skin directly helps in keeping the body warm ? |
| A. | Pigmented cells |
| B. | Sweat glands |
| C. | Lymph vessels |
| D. | Blood capillaries |
| Answer» D. Blood capillaries | |
| 922. |
Which of the following is true with reference to blood platelets? |
| A. | They have prominent nuclei. |
| B. | |
| C. | They are involved in phagocytosis |
| D. | They have a pigment called haemoglobin |
| E. | They are also called thrombocytes. |
| Answer» E. They are also called thrombocytes. | |
| 923. |
Clitellum is found in |
| A. | Leech |
| B. | Snail |
| C. | Nereis |
| D. | Earthworm |
| Answer» E. | |
| 924. |
The non-green heterotrophic plants of plant kingdom are |
| A. | mosses |
| B. | ferns |
| C. | algae |
| D. | fungi |
| Answer» E. | |
| 925. |
Which amongst the following is largest endocrine gland in the body ? |
| A. | Thyroid |
| B. | Parathyroid |
| C. | Adrenal |
| D. | Pituitary |
| Answer» B. Parathyroid | |
| 926. |
The basic structural and functional unit of living organisms is |
| A. | Cell |
| B. | Tissue |
| C. | Organ |
| D. | Systems |
| Answer» B. Tissue | |
| 927. |
Which of the following cells secrete insulin? |
| A. | Alpha cells |
| B. | Delta cells |
| C. | Nerve cells |
| D. | Beta cells |
| Answer» E. | |
| 928. |
A plant which reproduces by means of spores |
| A. | Mustard |
| B. | Coriander |
| C. | Ferns |
| D. | Petunia |
| Answer» D. Petunia | |
| 929. |
Which components of light are absorbed by chlorophyll ? |
| A. | Violet and red |
| B. | Indigo and orange |
| C. | Blue and red |
| D. | Violet and yellow |
| Answer» B. Indigo and orange | |
| 930. |
Lactose is present in |
| A. | grapes |
| B. | milk |
| C. | lime |
| D. | vinegar |
| Answer» C. lime | |
| 931. |
Damping off of seedlings is caused by |
| A. | Peronospola parasitica |
| B. | Albugo Candida |
| C. | Phytophthora infestans |
| D. | Pythium debaryanum |
| Answer» E. | |
| 932. |
People with Down s syndrome invariably affected by: |
| A. | Huntington s disease |
| B. | Alzheimer s disease |
| C. | Meningitis |
| D. | Brain haemorrhage |
| Answer» C. Meningitis | |
| 933. |
Excretion in Hemichordates takes place by |
| A. | Glomerulus |
| B. | Pronephron |
| C. | Mesonephron |
| D. | Metanephron |
| Answer» B. Pronephron | |
| 934. |
In the case of test tube babies |
| A. | egg is fertilized in the uterus. |
| B. | embryo completes its development in a test tube. |
| C. | embryo is placed in uterusafter 2 months. |
| D. | egg is fertilized outside mother s body. |
| Answer» D. egg is fertilized outside mother s body. | |
| 935. |
The most abundant enzyme in the living world is |
| A. | Rubisco |
| B. | Invertase |
| C. | DNAse |
| D. | Zymase |
| Answer» B. Invertase | |
| 936. |
Which of the following is commonly used in preparing custard powder ? |
| A. | raagi |
| B. | wheat |
| C. | maize |
| D. | rice |
| Answer» D. rice | |
| 937. |
The disease which has been eradicated : |
| A. | Mumps |
| B. | Measles |
| C. | Small pox |
| D. | Chicken pox |
| Answer» D. Chicken pox | |
| 938. |
Natural system of classification was proposed by ______ botanists. |
| A. | Indian |
| B. | German |
| C. | Swedish |
| D. | British |
| Answer» E. | |
| 939. |
Maximum oxygen is available from : |
| A. | Deserts |
| B. | Green forests |
| C. | Grass lands |
| D. | Phytoplanktons |
| Answer» E. | |
| 940. |
Which of the following is correlated with blood pressure ? |
| A. | Liver |
| B. | Testis |
| C. | Pancreas |
| D. | Adrenal |
| Answer» E. | |
| 941. |
The use of heat treatment of ore that includes smelting and roasting is termed as : |
| A. | Electrometallurgy |
| B. | Hydrometallurgy |
| C. | Pyrometallurgy |
| D. | Cryometallurgy |
| Answer» D. Cryometallurgy | |
| 942. |
The deficiency of vitamin A causes |
| A. | night blindness |
| B. | beri-beri |
| C. | |
| D. | rickets |
| E. | pellagra |
| Answer» B. beri-beri | |
| 943. |
Match List I with List II and choose the correct response : |
| A. | a-l, b-2, c-3, d-4 |
| B. | a-2, b-3. c-4, d-l |
| C. | a-3, b-4, c-l, d-2 |
| D. | a-4, b-1, c-2, d-3 |
| Answer» D. a-4, b-1, c-2, d-3 | |
| 944. |
In any spreadsheet, the address of the first cell is |
| A. | 0A |
| B. | 1A |
| C. | A0 |
| D. | Al |
| Answer» E. | |
| 945. |
Which of the following is not a stem modification ? |
| A. | Bulb of Onion |
| B. | Corm of Arvi |
| C. | Tuber of Sweet-potato |
| D. | Tuber of Potato |
| Answer» D. Tuber of Potato | |
| 946. |
The old and worn-out red blood corpuscles are destroyed in |
| A. | Liver |
| B. | Stomach |
| C. | Bone marrow |
| D. | Spleen |
| Answer» E. | |
| 947. |
Plant genetic material in Gene- Bank is preserved at 196 C in liquid nitrogen as. |
| A. | seedling and meristem |
| B. | mature seed (dry) |
| C. | premature seed (high moisture) |
| D. | ripe fruit |
| Answer» C. premature seed (high moisture) | |
| 948. |
Insulin : |
| A. | increases blood sugar |
| B. | decreases blood sugar |
| C. | constricts blood vessels |
| D. | stimulates lactation |
| Answer» C. constricts blood vessels | |
| 949. |
Which amongst the following is the largest mammal ? |
| A. | Elephant |
| B. | Whale |
| C. | Dinosaur |
| D. | Rhinoceros |
| Answer» C. Dinosaur | |
| 950. |
The following sugar gives energy most readily |
| A. | Lactose |
| B. | Cellulose |
| C. | Maltose |
| D. | Glucose |
| Answer» E. | |