Biology MCQs – Set 2: High-Level Questions for UPSC/PSC/SSC CGL Prep

Which organ is affected by Hepatitis?
(A) Heart
(B) Liver
(C) Lungs
(D) Kidney
Answer: (B)
Which part of the body is affected by bronchitis?
(A) Liver
(B) Lungs
(C) Intestine
(D) Kidney
Answer: (B)
Which organ purifies the blood in the human body?
(A) Heart
(B) Lungs
(C) Liver
(D) Kidneys
Answer: (D)
The main function of the large intestine is –
(A) Absorption of food
(B) Absorption of water
(C) Digestion of fat
(D) Digestion of protein
Answer: (B)
Which protein is responsible for oxygen transport in blood?
(A) Hemoglobin
(B) Myosin
(C) Albumin
(D) Collagen
Answer: (A)
Which of the following carries oxygenated blood?
(A) Pulmonary artery
(B) Pulmonary vein
(C) Vena cava
(D) Right auricle
Answer: (B)
Which of the following is responsible for transpiration in plants?
(A) Roots
(B) Leaves
(C) Stem
(D) Flowers
Answer: (B)
The process of cell division in somatic cells is –
(A) Meiosis
(B) Mitosis
(C) Fission
(D) Fusion
Answer: (B)
The function of white blood cells is –
(A) Clotting
(B) Oxygen transport
(C) Immunity
(D) Energy production
Answer: (C)
Which vitamin helps in calcium absorption?
(A) Vitamin A
(B) Vitamin C
(C) Vitamin D
(D) Vitamin K
Answer: (C)
Which is the structural and functional unit of the kidney?
(A) Nephron
(B) Glomerulus
(C) Tubule
(D) Bowman’s capsule
Answer: (A)
Which disease is caused by deficiency of iodine?
(A) Anemia
(B) Goitre
(C) Rickets
(D) Scurvy
Answer: (B)
Which hormone helps regulate blood sugar levels?
(A) Adrenaline
(B) Thyroxine
(C) Insulin
(D) Estrogen
Answer: (C)
Night blindness is caused due to deficiency of –
(A) Vitamin B1
(B) Vitamin C
(C) Vitamin A
(D) Vitamin D
Answer: (C)
The pH of human blood is –
(A) 6.4
(B) 7.4
(C) 8.4
(D) 9.4
Answer: (B)
Which part of the plant conducts food?
(A) Xylem
(B) Phloem
(C) Cambium
(D) Cortex
Answer: (B)
A virus is made up of –
(A) DNA and lipids
(B) DNA/RNA and protein
(C) Only protein
(D) Only nucleic acid
Answer: (B)
Which part of the brain controls balance and coordination?
(A) Cerebrum
(B) Cerebellum
(C) Medulla
(D) Hypothalamus
Answer: (B)
Which disease is caused by a protozoan?
(A) Typhoid
(B) Malaria
(C) Tuberculosis
(D) Cholera
Answer: (B)
Which part of the human body is affected by cataract?
(A) Ear
(B) Nose
(C) Skin
(D) Eye
Answer: (D)
The human heart has how many chambers?
(A) 2
(B) 3
(C) 4
(D) 5
Answer: (C)
Which organ produces bile?
(A) Pancreas
(B) Kidney
(C) Liver
(D) Gallbladder
Answer: (C)
Which of these is not a component of the circulatory system?
(A) Heart
(B) Blood
(C) Lungs
(D) Blood vessels
Answer: (C)
The universal recipient blood group is –
(A) A
(B) B
(C) AB
(D) O
Answer: (C)
Enzymes are –
(A) Carbohydrates
(B) Fats
(C) Proteins
(D) Vitamins
Answer: (C)
Blood platelets help in –
(A) Transporting oxygen
(B) Clotting of blood
(C) Fighting infection
(D) Digestion
Answer: (B)
The largest part of the human brain is –
(A) Cerebellum
(B) Medulla
(C) Cerebrum
(D) Pons
Answer: (C)
An organism that carries disease-causing germs is called –
(A) Host
(B) Carrier
(C) Vector
(D) Parasite
Answer: (C)
Which disease is caused by Plasmodium?
(A) Dengue
(B) Typhoid
(C) Malaria
(D) Cholera
Answer: (C)
Which part of the plant cell is absent in animal cells?
(A) Mitochondria
(B) Ribosome
(C) Chloroplast
(D) Nucleus
Answer: (C)
Which of the following is a genetic disorder?
(A) Asthma
(B) Diabetes
(C) Hemophilia
(D) Malaria
Answer: (C)
Which pigment gives red color to RBCs?
(A) Melanin
(B) Hemoglobin
(C) Chlorophyll
(D) Myoglobin
Answer: (B)
Which of the following glands is both endocrine and exocrine?
(A) Thyroid
(B) Pancreas
(C) Pituitary
(D) Adrenal
Answer: (B)
Which vitamin helps in healing of wounds?
(A) Vitamin A
(B) Vitamin C
(C) Vitamin D
(D) Vitamin E
Answer: (B)
Which part of the ear helps in maintaining balance?
(A) Cochlea
(B) Tympanic membrane
(C) Semicircular canals
(D) Auditory nerve
Answer: (C)
In which form is glucose stored in liver?
(A) Sucrose
(B) Glycogen
(C) Cellulose
(D) Fructose
Answer: (B)
Which is the largest cell in the human body?
(A) Nerve cell
(B) Red blood cell
(C) Egg cell
(D) Muscle cell
Answer: (C)
Which virus causes AIDS?
(A) HIV
(B) HSV
(C) H1N1
(D) SARS-CoV
Answer: (A)
The human skeleton is made up of how many bones?
(A) 200
(B) 202
(C) 206
(D) 210
Answer: (C)
The fluid part of blood is –
(A) Platelets
(B) Plasma
(C) WBC
(D) Hemoglobin
Answer: (B)
The respiratory pigment in human blood is –
(A) Hemoglobin
(B) Myoglobin
(C) Chlorophyll
(D) None
Answer: (A)
Which disease is prevented by BCG vaccine?
(A) Tetanus
(B) Diphtheria
(C) Polio
(D) Tuberculosis
Answer: (D)
Who discovered the circulation of blood?
(A) William Harvey
(B) Hippocrates
(C) Galen
(D) Aristotle
Answer: (A)
Which organ secretes growth hormone?
(A) Thyroid
(B) Pituitary
(C) Pancreas
(D) Adrenal
Answer: (B)
Which organ produces urea?
(A) Kidney
(B) Liver
(C) Pancreas
(D) Heart
Answer: (B)
Which mineral is required for blood clotting?
(A) Iron
(B) Calcium
(C) Sodium
(D) Potassium
Answer: (B)
Which blood group is known as universal donor?
(A) A
(B) B
(C) AB
(D) O
Answer: (D)
Which blood group is known as universal recipient?
(A) A
(B) B
(C) AB
(D) O
Answer: (C)
Which part of the brain regulates breathing?
(A) Cerebellum
(B) Cerebrum
(C) Medulla
(D) Hypothalamus
Answer: (C)
Which protein is present in hair and nails?
(A) Collagen
(B) Keratin
(C) Albumin
(D) Myosin
Answer: (B)

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