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MCQOPTIONS
This section includes 2103 Mcqs, each offering curated multiple-choice questions to sharpen your Current Affairs knowledge and support exam preparation. Choose a topic below to get started.
| 201. |
Genetic information is carried by long chains of molecules. What are these molecules called? |
| A. | Phosphates |
| B. | Nitrogenous Bases |
| C. | RNA |
| D. | Nucleotides |
| Answer» E. | |
| 202. |
In which of the following groups of animals, the heart pumps only deoxygenated blood? |
| A. | Fish |
| B. | Mammals |
| C. | Reptile |
| D. | Snake |
| Answer» B. Mammals | |
| 203. |
Corpus callosum connects |
| A. | Two cerebral hemispheres |
| B. | Diencephalon and mid brain |
| C. | Pons and medulla |
| D. | Medulla and spinal cord |
| Answer» B. Diencephalon and mid brain | |
| 204. |
_______ is a branch of horticulture as it deals with the cultivation of flowers and ornamental crops from the time of planting to the time of harvesting. |
| A. | Sericulture |
| B. | Floriculture |
| C. | Apiculture |
| D. | Mariculture |
| Answer» C. Apiculture | |
| 205. |
Ascanoid canal system found in |
| A. | Grantia |
| B. | Scypha |
| C. | Leucosolenia |
| D. | Spongilla |
| Answer» D. Spongilla | |
| 206. |
Holoblastic cleavage is not found in |
| A. | Amphioxus |
| B. | Frog |
| C. | Chick |
| D. | Chick and Amphioxus |
| Answer» D. Chick and Amphioxus | |
| 207. |
Name the longest cell in humans. |
| A. | Nerve cell |
| B. | Muscle cell |
| C. | Hair cell |
| D. | Mycoplasma |
| Answer» B. Muscle cell | |
| 208. |
_____ is the most abundant molecule in cells, accounting for 70% or more of total cell mass. |
| A. | Lipids |
| B. | Proteins |
| C. | Water |
| D. | Nucleic acid |
| Answer» D. Nucleic acid | |
| 209. |
Chromosomes are located in the: |
| A. | Golgi bodies |
| B. | Nucleus |
| C. | Vacuoles |
| D. | Plastids |
| Answer» C. Vacuoles | |
| 210. |
Match List-I with List-II and select the correct answer using the code given below the Lists: List I(Molecule) List II(Product of digestion)A.Proteins1.Nitrogenous bases and pentose sugarsB.Carbohydrates2.Fatty acids and glycerolC.Nucleic acids3.MonosaccharidesD.Lipids4.Amino acids |
| A. | A – 2, B – 3, C – 1, D - 4 |
| B. | A – 2, B – 1, C – 3, D - 4 |
| C. | A – 4, B – 1, C – 3, D - 2 |
| D. | A – 4, B – 3, C – 1, D - 2 |
| Answer» E. | |
| 211. |
If a person is addicted to alcohol, the liver gets damaged because it |
| A. | has to detoxify the alcohol. |
| B. | stores excess of glycol |
| C. | is over stimulated to secrete more bile |
| D. | accumulates excess of fats |
| Answer» D. accumulates excess of fats | |
| 212. |
Genetic disorders are: |
| A. | Communicable diseases |
| B. | Non-communicable diseases |
| C. | Life-style diseases |
| D. | Toxicity diseases |
| Answer» C. Life-style diseases | |
| 213. |
______ is caused by severe protein deficiency. |
| A. | Xerophthalmia |
| B. | Goitre |
| C. | Rickets |
| D. | Kwashiorkor |
| Answer» E. | |
| 214. |
Number of chambers in the heart of cockroach is? |
| A. | 5 |
| B. | 13 |
| C. | 16 |
| D. | 9 |
| Answer» C. 16 | |
| 215. |
In which year did scientists discover the virus that causes AIDS? |
| A. | 1989 |
| B. | 1992 |
| C. | 1965 |
| D. | 1983 |
| Answer» E. | |
| 216. |
Permanent tissues with various cells in plants is called |
| A. | Simple tissue |
| B. | Complex tissue |
| C. | Cambium |
| D. | Inter calary meristem |
| Answer» C. Cambium | |
| 217. |
Insulin activates in ________. |
| A. | Pancreas |
| B. | Parathyroid |
| C. | Thymus |
| D. | Pituitary |
| Answer» B. Parathyroid | |
| 218. |
BCG vaccination is used for the prevention of ____? |
| A. | Tuberculosis |
| B. | Plague |
| C. | Dengue |
| D. | Typhoid |
| Answer» B. Plague | |
| 219. |
Consider the following two statements:a. Our stomach produces hydrochloric acid. It helps in digestion of food. During indigestion, the stomach produces too much acid causing pain and irritation.b. Magnesium hydroxide (milk of magnesia) is often used in the above condition which is an analgesic.Which is a completely correct statement? |
| A. | Only a |
| B. | Only b |
| C. | Both a and b |
| D. | Neither a nor b |
| Answer» B. Only b | |
| 220. |
Bone is connected to a muscle by a ________. |
| A. | tendon |
| B. | nerve |
| C. | joint |
| D. | ligament |
| Answer» B. nerve | |
| 221. |
Identify i, ii, iii and iv in the given classification of permanent tissues. |
| A. | i. Parenchyma ii. Complex iii. Sclerenchyma iv. Phloem |
| B. | i. Complex ii. Parenchyma iii. Sclerenchyma iv. Phloem |
| C. | i. Complex ii. Phloem iii. Sclerenchyma iv. Parenchyma |
| D. | i. Complex ii. Aerenchyma iii. Sclerenchyma iv. Phloem |
| Answer» C. i. Complex ii. Phloem iii. Sclerenchyma iv. Parenchyma | |
| 222. |
Histone octamer does not include |
| A. | H1 |
| B. | H2B |
| C. | H3 |
| D. | H4 |
| Answer» B. H2B | |
| 223. |
Find out the wrong pair. |
| A. | Intestine – involuntary |
| B. | Hand muscles – voluntary |
| C. | Neck muscles – voluntary |
| D. | Air passage – voluntary |
| Answer» E. | |
| 224. |
Match the following:Type of Muscle tissue LocationI. Striated 1. HeartII.Smooth2. LimbsIII.Cardiac 3. Iris of the eye, in ureters and in bronchi of lungs |
| A. | I – 2, II – 3, III – 1 |
| B. | I – 1, II – 3, III – 2 |
| C. | I – 1, II – 2, III – 3 |
| D. | I – 3, II – 1, III – 2 |
| Answer» B. I – 1, II – 3, III – 2 | |
| 225. |
Give the other term for red blood cells. |
| A. | Erythrocytes |
| B. | Leucocytes |
| C. | Chondrocytes |
| D. | Osteocytes |
| Answer» B. Leucocytes | |
| 226. |
Consider the following animals:1. Sea cow2. Sea horse3. Sea lionWhich of the above is/are mammal/mammals? |
| A. | 1 only |
| B. | 1 and 3 only |
| C. | 2 and 3 only |
| D. | 1, 2 and 3 |
| Answer» C. 2 and 3 only | |
| 227. |
Identify the correct pair of enzyme and its function: |
| A. | E. coli restriction endonuclease-II - cuts DNA at specific places. |
| B. | Acrosin - cortical granules of ovum secrete it to prevent polyspermic fertilisation. |
| C. | Succinic dehydrogenase - Lysosomal marker enzyme, hydrolyses metabolites. |
| D. | Acid phosphatase - Mitochondrial marker enzymes related to oxidative functions. |
| Answer» B. Acrosin - cortical granules of ovum secrete it to prevent polyspermic fertilisation. | |
| 228. |
Mon 863 is a variety of maize. It was in the news for the following reason |
| A. | It is a genetically modified dwarf variety which is resistant to drought |
| B. | It is a genetically modified variety which is pest resistant |
| C. | It is a genetically modified variety with ten times higher protein content than regular maize crop |
| D. | It is a genetically modified variety used exclusively for bio-fuel pro-duction |
| Answer» C. It is a genetically modified variety with ten times higher protein content than regular maize crop | |
| 229. |
Among the following respiration is which type of process? |
| A. | Exothermic process only |
| B. | Endothermic process only |
| C. | Both exothermic and endothermic |
| D. | Neither exothermic Nor endothermic |
| Answer» B. Endothermic process only | |
| 230. |
Gregor Mendel is often referred to as the father of genetics, since he fist enunciated the principles of heredity. His experimental material was |
| A. | Fruit fly |
| B. | Bread mould |
| C. | Pea plant |
| D. | Rhesus monkey |
| Answer» D. Rhesus monkey | |
| 231. |
Fibers are absent in: |
| A. | Liver |
| B. | Heart |
| C. | Kidney |
| D. | Blood |
| Answer» E. | |
| 232. |
Plants that do NOT have a well-differentiated body design fall in the ____ group. |
| A. | Gymnosperms |
| B. | Pteridophyta |
| C. | Thallophyta |
| D. | Bryophyta |
| Answer» D. Bryophyta | |
| 233. |
Heart is not myogenic in |
| A. | Annelida |
| B. | Mollusca |
| C. | Pisces |
| D. | Amphibia |
| Answer» B. Mollusca | |
| 234. |
Autecology means the study of: |
| A. | Effect of soil on plant |
| B. | Effect of temperature on plant |
| C. | Effect of transpiration on plant |
| D. | Relationship of species with their environment |
| Answer» E. | |
| 235. |
Diabetes is a condition in which the level of _______ in an individual's blood becomes too high. |
| A. | sucrose |
| B. | glucose |
| C. | galactose |
| D. | maltose |
| Answer» C. galactose | |
| 236. |
Primary growth in plants occurs by:A. Vertical meristemB. Lateral meristemC. Intercalary meristemD. Apical meristem |
| A. | A. B, C and D |
| B. | B. C and D |
| C. | C and D |
| D. | A. B and D |
| Answer» D. A. B and D | |
| 237. |
Fore limbs of whale, bat, tiger and man are examples of |
| A. | Homologous organs |
| B. | Analogons organs |
| C. | Vestigral organs |
| D. | Homoplastic organs |
| Answer» B. Analogons organs | |
| 238. |
Deficiency of vitamin 'X' causes bleeding of gums. This vitamin is essential for absorption of mineral 'Y' and 'X' is found in food 'Z'. Identify X, Y and Z. |
| A. | X-vitamin B, Y-calcium, Z-green leafy vegetables |
| B. | X-vitamin A, Y-phosphorus, Z-poultry products |
| C. | X-vitamin D, Y- calcium, Z-milk product |
| D. | X-vitamin C, Y-iron, Z-citrus fruits |
| Answer» D. X-vitamin C, Y-iron, Z-citrus fruits | |
| 239. |
_____ tissue is the only plant tissue that produces new cells by cell division. |
| A. | Parenchyma |
| B. | Xylem |
| C. | Collenchyma |
| D. | Meristematic |
| Answer» E. | |
| 240. |
In which of the following is sex determined by environment? |
| A. | Maize |
| B. | Papaya |
| C. | Bonnelia |
| D. | Honeybee |
| Answer» D. Honeybee | |
| 241. |
As one moves from the polar region towards equator the diversity of plant and animal species _________. |
| A. | increases |
| B. | decreases |
| C. | no changes |
| D. | no option is correct. |
| Answer» B. decreases | |
| 242. |
_______ are tiny openings or pores on the surface of the plant leaves that allow gas exchange. |
| A. | Stomata |
| B. | Pores |
| C. | Veins |
| D. | Chloroplast |
| Answer» B. Pores | |
| 243. |
Heterotrophic organisms, chiefly bacteria and fungi that breakdown the complex compounds of dead protoplasm and release simple usable substances for other organisms are: |
| A. | Autotrophs |
| B. | Decomposers |
| C. | Consumers |
| D. | Omnivorous |
| Answer» C. Consumers | |
| 244. |
In which part of the cinchona plant quinine occurs naturally? |
| A. | Root |
| B. | Fruit |
| C. | Seed |
| D. | Bark |
| Answer» E. | |
| 245. |
A true fruit develops from the |
| A. | Carpel |
| B. | Ovule |
| C. | Anther |
| D. | Ovary |
| Answer» E. | |
| 246. |
A short day plant has a critical day length of 14 hours. It will flower when the day length is |
| A. | 15 hours |
| B. | 18 hours |
| C. | 12 hours |
| D. | 16 hours |
| Answer» D. 16 hours | |
| 247. |
During exhalation, the ribs ________. |
| A. | move outwards |
| B. | move downwards |
| C. | move upwards |
| D. | do not move at all |
| Answer» C. move upwards | |
| 248. |
Match List - I with List-II and select the correct answer from the codes given below the lists:List - I(Hormone)List – II(Function)A. Aldosterone1. Maintains female secondary sex characteristicsB. Oestrogen2. Controls circadian rhythmC. Melatonin3. Salt-retaining hormoneD. Progesterone4. Sustains the pregnancy |
| A. | A-4, B-2, C-1, D-3 |
| B. | A-4, B-1, C-2, D-3 |
| C. | A-3, B-2, C-1, D-4 |
| D. | A-3, B-1, C-2, D-4 |
| Answer» E. | |
| 249. |
Plants receive nutrients from |
| A. | atmosphere |
| B. | chlorophyll |
| C. | soil |
| D. | light |
| Answer» D. light | |
| 250. |
________ give evidence of evolutionary relationships. |
| A. | Rocks |
| B. | Ocean beds |
| C. | River beds |
| D. | Fossils |
| Answer» B. Ocean beds | |