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.
| 701. |
Which of the following is the hardest substance in the human body ? |
| A. | Bone |
| B. | Enamel |
| C. | Dentine |
| D. | Nail |
| Answer» C. Dentine | |
| 702. |
Endoscope is an instrument used to detect the ulcers in the stomach has a long narrow tube (with a small glowing bulb at one end) which is inserted in to the stomach through the mouth contains. |
| A. | small current carrying wire |
| B. | a narrow tube containing water |
| C. | optical fibre |
| D. | a narrow tube containing some chemical solution |
| Answer» D. a narrow tube containing some chemical solution | |
| 703. |
Rickets is the deficiency disease of Vitamin D, in which the affected part is the |
| A. | skin |
| B. | hair |
| C. | bone |
| D. | blood |
| Answer» D. blood | |
| 704. |
To carry out photosynthesis plants require |
| A. | Oxygen |
| B. | Carbon-dioxide |
| C. | Nitrogen |
| D. | Hydrogen |
| Answer» C. Nitrogen | |
| 705. |
Compounds that are needed for enzymes to function properly are |
| A. | Steroids |
| B. | Vitamins |
| C. | Heavy metals |
| D. | Buffers |
| Answer» C. Heavy metals | |
| 706. |
Which of these components of the blood is responsible for clotting ? |
| A. | R.B.C. |
| B. | Lymphocytes |
| C. | Monocytes |
| D. | Platelets |
| Answer» E. | |
| 707. |
Oxyntic cell is meant for the secretion of |
| A. | Pepsin |
| B. | Enterokinase |
| C. | Hydrochloric acid |
| D. | Lactic acid |
| Answer» D. Lactic acid | |
| 708. |
Which vitamin is produced in human body by exposing it to early morning sun rays? |
| A. | Vitamin A |
| B. | Vitamin B |
| C. | Vitamin C |
| D. | Vitamin D |
| Answer» E. | |
| 709. |
Which of these produces energy? |
| A. | Carbohydrates |
| B. | Proteins |
| C. | Vitamins |
| D. | Mineral salts |
| Answer» B. Proteins | |
| 710. |
Phototropic movement is controlled by |
| A. | Auxin |
| B. | Gibberellin |
| C. | Cytokinin |
| D. | Ethylene |
| Answer» B. Gibberellin | |
| 711. |
Darwin finches refers to a group of |
| A. | Fishes |
| B. | Lizards |
| C. | Birds |
| D. | Amphibians |
| Answer» D. Amphibians | |
| 712. |
Which of the following is effective against tuberculosis ? |
| A. | Penicillin |
| B. | Chloromycetin |
| C. | Terramycin |
| D. | Streptomycin |
| Answer» E. | |
| 713. |
The element which is rich in most leafy vegetables is |
| A. | Phosphorous |
| B. | Zinc |
| C. | Iron |
| D. | Calcium |
| Answer» D. Calcium | |
| 714. |
An eardrum is absent in : |
| A. | snakes |
| B. | turtles |
| C. | tuatara |
| D. | toads |
| Answer» B. turtles | |
| 715. |
Haemoglobin contains the metal |
| A. | Copper |
| B. | Molybdenum |
| C. | Iron |
| D. | Magnesium |
| Answer» D. Magnesium | |
| 716. |
Which one of the following is a vestigial organ ? |
| A. | Eye-brow |
| B. | Collar-bone |
| C. | Wisdom-teeth |
| D. | Nails |
| Answer» D. Nails | |
| 717. |
Bone is used as a fertiliser because it contains the plant nutrient |
| A. | Nitrogen |
| B. | Phosphorus |
| C. | Sodium |
| D. | Calcium |
| Answer» C. Sodium | |
| 718. |
The substance used to bring down body temperature in high fever, is |
| A. | Tranquilisers |
| B. | Antipyretics |
| C. | Analgesics |
| D. | Antibiotics |
| Answer» C. Analgesics | |
| 719. |
Lactogenic hormone is secreted by |
| A. | Mammary glands |
| B. | Placenta |
| C. | Ovary |
| D. | Pituitary |
| Answer» E. | |
| 720. |
Camel is a desert animal, that can live without water for many days, because |
| A. | it does not need water |
| B. | water is formed in the body due to oxidation of fat |
| C. | it has the water sac in the walls of the lumen of stomach |
| D. | All of the above |
| Answer» E. | |
| 721. |
Sodium Pump operates in |
| A. | Muscle contraction |
| B. | Heart beat |
| C. | Nerve impulse |
| D. | None of the above |
| Answer» D. None of the above | |
| 722. |
Which of the following has Vitamin C ? |
| A. | Gooseberry (Amla) |
| B. | Apple |
| C. | Banana |
| D. | Papaya |
| Answer» B. Apple | |
| 723. |
Water flows off the wings of birds and insects due- to the presence of |
| A. | Waxes |
| B. | Sugars |
| C. | Proteins |
| D. | Minerals |
| Answer» C. Proteins | |
| 724. |
Comose seeds are seeds with |
| A. | Long hairs |
| B. | Wings |
| C. | Bristles |
| D. | Hooks |
| Answer» B. Wings | |
| 725. |
The first stable product of photosynthesis is |
| A. | Starch |
| B. | Sucrose |
| C. | Phosphoglyceric acid |
| D. | Glucose |
| Answer» D. Glucose | |
| 726. |
Where is the Pineal Gland situated? |
| A. | in the Liver |
| B. | in the Brain |
| C. | in the Kidneys |
| D. | in the Uterus |
| Answer» C. in the Kidneys | |
| 727. |
The metal present in insulin is |
| A. | Copper |
| B. | Iron |
| C. | Zinc |
| D. | Magnesium |
| Answer» D. Magnesium | |
| 728. |
A test tube baby means : |
| A. | a baby grown in a test tube. |
| B. | embryo fertilised in uterus and developed in test tube. |
| C. | embryo fertilised and developed in uterus. |
| D. | fertilisation in vitro and then transplantation in the uterus. |
| Answer» E. | |
| 729. |
Which one of the following is commonly known as Pond Silk ? |
| A. | Spirogyra |
| B. | Rhizopus |
| C. | Yeast |
| D. | Ulothrix |
| Answer» B. Rhizopus | |
| 730. |
Insects responsible for transmitting diseases are called |
| A. | Vector |
| B. | Transmitter |
| C. | Drones |
| D. | Conductor |
| Answer» B. Transmitter | |
| 731. |
At very high altitude, the Red Blood Corpuscles in the human body will : |
| A. | increase in size |
| B. | decrease in size |
| C. | increase in number |
| D. | decrease in number |
| Answer» B. decrease in size | |
| 732. |
The Vitamin which helps in clotting of blood is : |
| A. | A |
| B. | D |
| C. | B |
| D. | K |
| Answer» E. | |
| 733. |
The percentage of water content in the human blood plasma normally varies from |
| A. | 60-64 |
| B. | 70-75 |
| C. | 80-82 |
| D. | 91-92 |
| Answer» E. | |
| 734. |
Out of the following glands which is referred to as the master gland? |
| A. | Thyroid |
| B. | Adrenal gland |
| C. | Pituitary |
| D. | Pancreas |
| Answer» D. Pancreas | |
| 735. |
Which one of the following cells produces antibodies ? |
| A. | Eosinophil |
| B. | Monocyte |
| C. | Basophil |
| D. | Lymphocytes |
| Answer» E. | |
| 736. |
Xerophthalmia is a deficiency disease caused by lack of |
| A. | Vitamin A |
| B. | Vitamin B |
| C. | Vitamin C |
| D. | Vitamin D |
| Answer» B. Vitamin B | |
| 737. |
What is the number of chromosomes in a normal human body cell ? |
| A. | 43 |
| B. | 44 |
| C. | 45 |
| D. | 46 |
| Answer» E. | |
| 738. |
The sugar present in DNA is |
| A. | Pentose |
| B. | Xylulose |
| C. | Hexose |
| D. | Heptulose |
| Answer» B. Xylulose | |
| 739. |
Plants release energy during |
| A. | Photosynthesis |
| B. | Respiration |
| C. | Transpiration |
| D. | Germination |
| Answer» C. Transpiration | |
| 740. |
Blood cancer is commonly known as |
| A. | Leucoderma |
| B. | Leukaemia |
| C. | Haemophilia |
| D. | Sickle-cell anaemia |
| Answer» C. Haemophilia | |
| 741. |
Male mosquitoes |
| A. | Suck blood |
| B. | Feed on plant juices |
| C. | Spread encephalitis |
| D. | Spread malaria |
| Answer» C. Spread encephalitis | |
| 742. |
Full form of the infectious disease SARS is |
| A. | Syndrome Associated with Respiratory Symptoms |
| B. | Severe Acute Respiratory Syndrome |
| C. | |
| D. | Severe Asthmatic Respiratory Syndrome |
| E. | Syndrome Alarm on Respiratory System |
| Answer» C. | |
| 743. |
In the human body, which of the following organs is responsible for water balance ? |
| A. | Heart |
| B. | Liver |
| C. | Kidneys |
| D. | Lungs |
| Answer» D. Lungs | |
| 744. |
Which is the sensory receptor involved in detecting blood pressure? |
| A. | Chemo receptor |
| B. | Mechano receptor |
| C. | Photo receptor |
| D. | Magneto receptor |
| Answer» C. Photo receptor | |
| 745. |
Besides ear ossicles, the cavity of the middle ear in humans contains |
| A. | air |
| B. | endolymph |
| C. | perilymph |
| D. | otoconia |
| Answer» B. endolymph | |
| 746. |
In male sharks, Claspers are found attached to |
| A. | Anal fin |
| B. | Pectoral fin |
| C. | Pelvic fin |
| D. | Ventral fin |
| Answer» D. Ventral fin | |
| 747. |
EEG is used to detect the functioning of |
| A. | Heart |
| B. | Lung |
| C. | Kidney |
| D. | Brain |
| Answer» B. Lung | |
| 748. |
Excretory products of mammalian embryo are eliminated out by |
| A. | Placenta |
| B. | Amniotic fluid |
| C. | Allantois |
| D. | Ureter |
| Answer» B. Amniotic fluid | |
| 749. |
Locked jaw disorder is the other name of the disease |
| A. | Tetanus |
| B. | Muscular disorder |
| C. | Typhoid |
| D. | Filariasis |
| Answer» B. Muscular disorder | |
| 750. |
Which is the organ that excretes water, fat and various catabolic wastes ? |
| A. | Kidney |
| B. | Skin |
| C. | Spleen |
| D. | Salivary glands |
| Answer» B. Skin | |