The OSSSC LSI, Forester, or FG exams and seeking comprehensive preparation in Biology. We’ve compiled a curated list of the top 30 Biology (General Science) multiple-choice questions (MCQs) to aid in your exam readiness. Covering various aspects of biology, these questions delve into fundamental concepts, principles, and terminologies essential for success in your examination. Whether you’re focusing on cell biology, genetics, ecology, or physiology, this collection ensures a well-rounded understanding of the subject matter. With detailed explanations accompanying each answer, you’ll not only assess your knowledge but also enhance your understanding of key biological concepts. So, dive into these MCQs and embark on your journey towards acing the biology section of your OSSSC exams!
Top 30 Biology (General Science) MCQs for OSSSC LSI, Forester, FG
- Which of the following food products are high in protein content?
(a) Tofu and eggs
(b) Grains and legumes
(c) Milk and milk products
(d) All of the above
Sol: (d) All of the above - Which of the following statements is true about complete proteins?
(a) High-protein foods that stabilize body weight
(b) Food that has a balanced amount of fat and protein
(c) Foods that provide all the amino acids that the body needs
(d) All of the above
Sol: (c) Foods that provide all the amino acids that the body needs - Which of the following techniques is used to determine protein structures?
(a) X-ray crystallography
(b) Kryptonics X-ray vision
(c) Magnetic resonance imaging (MRI)
(d) None of the above
Sol: (a) X-ray crystallography - Which of the following disorders is caused by the deficiency of proteins?
(a) Weight loss
(b) Muscle fatigue
(c) Loss in muscle strength
(d) All of the above
Sol: (d) All of the above - Which of the following cell organelles is involved in the process of protein synthesis?
(a) Vesicles
(b) Ribosomes
(c) Synchrotrons
(d) Mitochondria
Sol: (b) Ribosomes - Which of the following is not a function of proteins?
(a) Helps in digesting food
(b) Carries genetic information
(c) Fights against invading pathogens
(d) Helps in transporting oxygen in the blood
Sol: (b) Carries genetic information - What deficiency leads to excessive bleeding during an injury?
(a) Vitamin A
(b) Vitamin B
(c) Vitamin K
(d) Vitamin E
Sol: (c) Vitamin K - Which mineral deficiency is associated with goitre and enlarged thyroid gland?
(a) Iron
(b) Iodine
(c) Calcium
(d) Phosphorus
Sol: (b) Iodine - What type of diseases are Cystic Fibrosis and Haemophilia examples of?
(a) Hereditary diseases
(b) Degenerative diseases
(c) Deficiency diseases
(d) None of the above
Sol: (a) Hereditary diseases - What type of diseases are caused by various pathogenic microorganisms?
(a) Deficiency diseases
(b) Hereditary diseases
(c) Infectious diseases
(d) Degenerative diseases
Sol: (c) Infectious diseases - Which disease is caused by protein deficiency?
(a) Anaemia
(b) Kwashiorkor
(c) Hypothyroidism
(d) All of the above
Sol: (b) Kwashiorkor - What is Entomology?
(a) The study of Birds
(b) The study of Insects
(c) The study of Microbes
(d) The study of Parasitic worms
Sol: (b) The study of Insects. - Which features characterize an Insect?
(a) Pair of antennae
(b) Three pairs of legs
(c) Pair of wings
(d) All of the above
Sol: (b) Three pairs of legs. - Which stage in the insect life cycle is considered resting and inactive?
(a) The Egg stage
(b) The Larva stage
(c) The pupa stage
(d) The Adult stage
Sol: (c) The pupa stage. - What is not a natural predator of BPH (Brown Planthopper)?
(a) Bugs
(b) Red ants
(c) Spiders
(d) All of the above
Sol: (b) Red ants. - What term describes insects that feed on only one type of food?
(a) Polyphagous
(b) Monophagous
(c) Entomophagy
(d) None of the above
Sol: (b) Monophagous. - What system defends our body against disease-causing microbes?
(a) Immune system
(b) Digestive system
(c) Excretory system
(d) Respiratory system
Sol: (a) Immune system. - Which type of immunity is present from birth?
(a) Innate Immunity
(b) Active immunity
(c) Passive immunity
(d) Acquired immunity
Sol: (a) Innate Immunity - Neutrophils, basophils, lymphocytes, eosinophils, and monocytes are examples of ________.
(a) Physical barrier
(b) Cellular barriers
(c) Cytokine barriers
(d) Physiological barriers
Sol: (b) Cellular barriers. - B-cells and T-cells are involved in _______________.
(a) Innate Immunity
(b) Active immunity
(c) Passive immunity
(d) Acquired immunity
Sol: (d) Acquired immunity. - Which of the following are common disorders caused by a poor immune system?
(a) Epidemic Diseases
(b) Deficiency diseases
(c) Autoimmune diseases
(d) None of the above
Sol: (a) Epidemic diseases. - What is true about Passive Immunity?
(a) This immunity causes reactions
(b) This immunity develops immediately
(c) This immunity lasts only for a few weeks or months
(d) All of the above.
Sol: (d) All of the above. - Which river is often referred to as the world’s most polluted river?
(a) Ganga River
(b) Chenab River
(c) Cauvery River
(d) Yamuna River
Sol: (a) Ganga River. - What are the primary causes of water pollution?
(a) Plants
(b) Animals
(c) Human activities
(d) None of these
Sol: (c) Human activities. - Which technique is commonly used for reducing total dissolved solids (TDS) in water?
(a) Osmosis
(b) Ion exchange
(c) Distillation
(d) Both b and c
Sol: (d) Both b and c. - Which of the following statements about Compressed Natural Gas (CNG) is true?
(a) It is a clean fuel
(b) It is a harmful fuel
(c) It is a polluting fuel
(d) All of the above
Sol: (a) It is a clean fuel. - What is the primary salt responsible for the permanent hardness of water?
(a) Magnesium sulphate
(b) Magnesium bicarbonate
(c) Magnesium carbonate
(d) None of the above
Sol: (a) Magnesium sulphate. - Which of the following components are major nutrients in our food?
(a) Carbohydrates
(b) Lipids and Proteins
(c) Vitamins and Minerals
(d) All of the above
Sol: (d) All of the above. - Which of the following food components is required for the growth and maintenance of the human body?
(a) Proteins
(b) Vitamins
(c) Minerals
(d) Both (a) and (b)
Sol: (d) Both (a) and (b) - Which food component provides energy to our body?
(a) Proteins
(b) Vitamins
(c) Minerals
(d) Carbohydrates
Correct answer: (d) Carbohydrates
