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.
| 201. |
Which one of the following hormone is called Emergency Hormone ? |
| A. | Adrenaline |
| B. | Thyroxine |
| C. | Vasopressin |
| D. | Insulin |
| Answer» B. Thyroxine | |
| 202. |
What do you call the study of fungi? |
| A. | Mycology |
| B. | Parasitology |
| C. | Bacteriology |
| D. | Ecology |
| Answer» B. Parasitology | |
| 203. |
Proteins are digested by |
| A. | Proteases |
| B. | Amylases |
| C. | Lipases |
| D. | Nucleases |
| Answer» B. Amylases | |
| 204. |
Which part of human body is affected by the ALZHEIMER S disease? |
| A. | Heart |
| B. | Kidney |
| C. | Immune System |
| D. | Brain |
| Answer» E. | |
| 205. |
DNA shows hyperchromicity on: |
| A. | heating |
| B. | cooling |
| C. | crystallizing |
| D. | replication |
| Answer» B. cooling | |
| 206. |
The primary producer in an ecosystem are; |
| A. | Women |
| B. | Men |
| C. | Plants |
| D. | Bacteria |
| Answer» D. Bacteria | |
| 207. |
. Kelp is |
| A. | Sulphide mineral of iron |
| B. | Partially decomposed vegetation |
| C. | Sea weed rich in iodine content |
| D. | An aluminium silicate mineral |
| Answer» D. An aluminium silicate mineral | |
| 208. |
Which of the following range of Air Pollutant Index is considered as hazardous ? |
| A. | 301-500 |
| B. | 201-300 |
| C. | 101-200 |
| D. | 401-500 |
| Answer» B. 201-300 | |
| 209. |
Wings of birds and insects are |
| A. | Xenologous |
| B. | Homologous |
| C. | Paralogous |
| D. | Analogous |
| Answer» E. | |
| 210. |
An example of protein which acts as a hormone is : |
| A. | Trypsin |
| B. | Oxytocin |
| C. | Keratin |
| D. | Casein |
| Answer» C. Keratin | |
| 211. |
Approximate life span of parrot is |
| A. | 20 years |
| B. | 40 years |
| C. | 70 years |
| D. | 140 years |
| Answer» B. 40 years | |
| 212. |
Foramen Magnum is an aperture found in the |
| A. | Ear |
| B. | Lung |
| C. | Girdle |
| D. | Skull |
| Answer» E. | |
| 213. |
The name of the longest muscle in human body is |
| A. | Sartorius muscle |
| B. | Massete muscle |
| C. | Stapedius muscle |
| D. | Gluteus Maximus muscle |
| Answer» B. Massete muscle | |
| 214. |
With which one of the following Jacobsons organ is related to ? |
| A. | Vision |
| B. | Chewing |
| C. | Smelling |
| D. | Hearing |
| Answer» D. Hearing | |
| 215. |
Tendons and ligaments are |
| A. | Connective tissue |
| B. | |
| C. | Muscular tissue |
| D. | Epithelial tissue |
| E. | Skeletal tissue |
| Answer» B. | |
| 216. |
A plant with 30 cm or more circumference from human chest height is identified as |
| A. | Herb |
| B. | Shrub |
| C. | Medicinal herbs |
| D. | Tree |
| Answer» D. Tree | |
| 217. |
Which one of the following is also called as milk sugar? |
| A. | Glucose |
| B. | Fructose |
| C. | Maltose |
| D. | Lactose |
| Answer» E. | |
| 218. |
Insectivorous plants grow in soil which is deficient in |
| A. | Nitrogen |
| B. | Sodium |
| C. | Calcium |
| D. | Magnesium |
| Answer» B. Sodium | |
| 219. |
The biggest single-celled organism is |
| A. | Yeast |
| B. | Acetabularia |
| C. | Acetobacter |
| D. | Amoeba |
| Answer» E. | |
| 220. |
Thinner particles responsible for deteriorating the air-quality resulting in the damage of vital body organs are referred as PM: |
| A. | 15.5 |
| B. | 10.5 |
| C. | 2.5 |
| D. | 20.5 |
| Answer» D. 20.5 | |
| 221. |
The skin biting mosquito has legs as locomotory organ which are |
| A. | Four pairs |
| B. | |
| C. | Three pairs |
| D. | Two pairs |
| E. | One pair |
| Answer» C. Three pairs | |
| 222. |
Hind limbs thumping on ground by a rabbit is a behaviour related to |
| A. | Courtship |
| B. | Preparation for a duet |
| C. | Warning signal to members |
| D. | Surrender ot a stronger opponent |
| Answer» D. Surrender ot a stronger opponent | |
| 223. |
Metals can be ____ at room temperature. |
| A. | Liquid only |
| B. | Solid only |
| C. | Solid or liquid |
| D. | Solid, liquid or gas |
| Answer» D. Solid, liquid or gas | |
| 224. |
The plant from which cocoa and chocolate are obtained is a |
| A. | herb |
| B. | shrub |
| C. | small tree |
| D. | very big tree |
| Answer» D. very big tree | |
| 225. |
The ambient air quaility standard (24 hours average) for lead in industrial area is |
| A. | 0.65 g/m3 |
| B. | 0.75 g/m3 |
| C. | 1.0 g/m3 |
| D. | 1.5 g/m3 |
| Answer» E. | |
| 226. |
Rate of cooling depends on the |
| A. | Temperature difference between the body and the surroundings |
| B. | Nature of the radiating surface |
| C. | Area of the radiating surface |
| D. | All of these |
| Answer» E. | |
| 227. |
Copper is associated with ____ mitochondrial enzymes. |
| A. | Cytochrome oxidase |
| B. | Succinic dehydrogenase |
| C. | Catalase |
| D. | Acid phosphatase |
| Answer» B. Succinic dehydrogenase | |
| 228. |
Time required for the organism to eliminate 50% the total body burden or tissue concentration of chemical is referred as |
| A. | Threshold limit time |
| B. | Half-time life |
| C. | Residual period |
| D. | Half-life period |
| Answer» E. | |
| 229. |
Which is the largest blood vessel in human body? |
| A. | Aorta |
| B. | Anatomises |
| C. | Tunica Intima |
| D. | Atrium |
| Answer» C. Tunica Intima | |
| 230. |
Protein part of enzyme is know as |
| A. | Isoenzyme |
| B. | Holoenzyme |
| C. | Apoenzyme |
| D. | All the above |
| Answer» D. All the above | |
| 231. |
Which base in place of thymine is present in RNA ? |
| A. | Adenine |
| B. | Guanine |
| C. | Uracil |
| D. | Cytosine |
| Answer» D. Cytosine | |
| 232. |
Which of the following human genetic disorders is sex-linked ? |
| A. | Haemophilia |
| B. | Cystic fibrosis |
| C. | Albinism |
| D. | PKU |
| Answer» B. Cystic fibrosis | |
| 233. |
A molecule in plants comparable to haemoglobin in animals is |
| A. | Cytochrome |
| B. | Cellulose |
| C. | Chlorophyll |
| D. | Carotene |
| Answer» D. Carotene | |
| 234. |
.What is farming along with animal husbandry called ? |
| A. | Mixed farming |
| B. | Mixed agriculture |
| C. | Dairy farming |
| D. | Truck farming |
| Answer» B. Mixed agriculture | |
| 235. |
Smut of wheat is coused by |
| A. | Ustilago maydis |
| B. | Puccinia graminis |
| C. | Ustilago tritici |
| D. | Colletotrichum falcatum |
| Answer» D. Colletotrichum falcatum | |
| 236. |
A group of genes whose activity is coordinated by a DNA site is called: |
| A. | operon |
| B. | cistron |
| C. | polysome |
| D. | polypeptide |
| Answer» B. cistron | |
| 237. |
Which one of the following animals belongs to mollusca? |
| A. | Haliotis |
| B. | Hare |
| C. | Hydra |
| D. | Hyla |
| Answer» C. Hydra | |
| 238. |
One of the following excretes uric acid as its excretory product : |
| A. | Amoeba |
| B. | Tilapia |
| C. | Sparrow |
| D. | Camel |
| Answer» D. Camel | |
| 239. |
_____ percent of Delhites are suffering from Asthma and Rhinitis. |
| A. | 13% |
| B. | 10% |
| C. | 11% |
| D. | 12% |
| Answer» D. 12% | |
| 240. |
Who among the following have venous heart? |
| A. | Mammals |
| B. | Reptilians |
| C. | Fishes |
| D. | Amphibians |
| Answer» D. Amphibians | |
| 241. |
Animal protein is called first class protein because it is |
| A. | easily digestible |
| B. | delicious in taste |
| C. | cheaper in the market |
| D. | rich in essential amino acids |
| Answer» E. | |
| 242. |
Slipper animalcule is the common name for: |
| A. | Paramecium |
| B. | Trypanosoma |
| C. | Monocystis |
| D. | Plasmodium |
| Answer» B. Trypanosoma | |
| 243. |
Potential of air pollution increases when the ventilation coefficient is |
| A. | > 11,000 m2/s |
| B. | > 7,600 m2/s |
| C. | < 3,600 m2/s |
| D. | < 6,000 m2/s |
| Answer» E. | |
| 244. |
Seed dormancy is regulatedby |
| A. | Abscisic acid |
| B. | Gibberellic acid |
| C. | Indole acetic acid |
| D. | Ethylene |
| Answer» B. Gibberellic acid | |
| 245. |
What accumulates in the muscles after continuous strenuous physical exercise as a result of temporary anaerobic respiration that causes muscular fatigue ? |
| A. | ATP |
| B. | Lactic acid |
| C. | Ethyl alcohol |
| D. | Carbon dioxide |
| Answer» C. Ethyl alcohol | |
| 246. |
Leech is an ectoparasite on cattle, which is |
| A. | Carnivorous |
| B. | Omnivorous |
| C. | Sanguivorous |
| D. | Herbivorous |
| Answer» E. | |
| 247. |
Hydrogen peroxide is an effective sterilizing agent. Which one of the following product results when it readily loses active oxygen? |
| A. | Nascent Hydrogen |
| B. | Water |
| C. | Hydrogen |
| D. | Ozone |
| Answer» C. Hydrogen | |
| 248. |
Which of the following is an insectivorous plant ? |
| A. | Balanophora |
| B. | Rafflesia |
| C. | Orobanche |
| D. | Drosera |
| Answer» E. | |
| 249. |
How many chambers does a mammalian heart have ? |
| A. | 4 |
| B. | 1 |
| C. | 2 |
| D. | 3 |
| Answer» B. 1 | |
| 250. |
Xenobiotics which are inherently resistant to microbial attack are called as: |
| A. | Biodegradable |
| B. | Persistent |
| C. | All of the given options |
| D. | Recalcitrant |
| Answer» E. | |