Which of the following blood cells are involved in clotting?
(A) Erythrocytes
(B) Leukocytes
(C) Platelets
(D) Monocytes
Answer: (C)

The structural and functional unit of life is –
(A) Tissue
(B) Cell
(C) Organ
(D) Organ system
Answer: (B)

Which part of the neuron receives signals?
(A) Axon
(B) Myelin sheath
(C) Dendrite
(D) Synapse
Answer: (C)

Which vitamin is also known as ascorbic acid?
(A) Vitamin A
(B) Vitamin B1
(C) Vitamin C
(D) Vitamin D
Answer: (C)

What is the main function of hemoglobin?
(A) Clotting
(B) Immunity
(C) Transport of oxygen
(D) Blood sugar regulation
Answer: (C)

Which part of the brain controls heart rate and breathing?
(A) Cerebrum
(B) Cerebellum
(C) Medulla oblongata
(D) Hypothalamus
Answer: (C)

Which is the largest internal organ in the human body?
(A) Kidney
(B) Liver
(C) Stomach
(D) Intestine
Answer: (B)

What is the process by which plants prepare their food?
(A) Transpiration
(B) Germination
(C) Photosynthesis
(D) Respiration
Answer: (C)

The process of cell division that results in two identical daughter cells is –
(A) Mitosis
(B) Meiosis
(C) Fusion
(D) Fission
Answer: (A)

Which connective tissue connects bones to bones?
(A) Ligament
(B) Tendon
(C) Cartilage
(D) Fascia
Answer: (A)

Which blood vessel supplies oxygenated blood to the heart muscle itself?
(A) Aorta
(B) Pulmonary artery
(C) Coronary artery
(D) Carotid artery
Answer: (C)

Which part of the eye is responsible for sharp central vision?
(A) Cornea
(B) Retina
(C) Macula
(D) Iris
Answer: (C)

Which enzyme breaks down fats into fatty acids and glycerol?
(A) Pepsin
(B) Amylase
(C) Lipase
(D) Trypsin
Answer: (C)

Which element is present in hemoglobin?
(A) Copper
(B) Zinc
(C) Iron
(D) Iodine
Answer: (C)

Which gland secretes the hormone melatonin?
(A) Pituitary
(B) Thyroid
(C) Pineal
(D) Adrenal
Answer: (C)

Which of the following is not a function of the liver?
(A) Bile secretion
(B) Urea production
(C) Detoxification
(D) Oxygen transport
Answer: (D)

The breakdown of glucose in the absence of oxygen is called –
(A) Aerobic respiration
(B) Photosynthesis
(C) Anaerobic respiration
(D) Transpiration
Answer: (C)

The major site for absorption of nutrients is –
(A) Stomach
(B) Large intestine
(C) Small intestine
(D) Esophagus
Answer: (C)

Which vitamin helps in calcium absorption?
(A) Vitamin A
(B) Vitamin B
(C) Vitamin C
(D) Vitamin D
Answer: (D)

Which hormone increases blood sugar levels?
(A) Insulin
(B) Glucagon
(C) Estrogen
(D) Oxytocin
Answer: (B)

Which organ excretes bile pigments?
(A) Kidney
(B) Skin
(C) Liver
(D) Lungs
Answer: (C)

Which organelle is responsible for ATP production?
(A) Ribosome
(B) Nucleus
(C) Mitochondria
(D) Golgi apparatus
Answer: (C)

Which of the following is a genetic disorder?
(A) Malaria
(B) Down syndrome
(C) Dengue
(D) Typhoid
Answer: (B)

What is the outermost layer of the kidney called?
(A) Cortex
(B) Medulla
(C) Capsule
(D) Nephron
Answer: (C)

Which part of the respiratory system is a common passage for food and air?
(A) Larynx
(B) Trachea
(C) Pharynx
(D) Bronchus
Answer: (C)

Which vitamin deficiency causes bleeding gums?
(A) Vitamin A
(B) Vitamin B
(C) Vitamin C
(D) Vitamin D
Answer: (C)

Which pigment gives red color to muscles?
(A) Hemoglobin
(B) Myoglobin
(C) Melanin
(D) Xanthophyll
Answer: (B)

The longest nerve in the human body is –
(A) Sciatic nerve
(B) Optic nerve
(C) Vagus nerve
(D) Facial nerve
Answer: (A)

Which blood cells are responsible for immunity?
(A) Red blood cells
(B) White blood cells
(C) Platelets
(D) Plasma
Answer: (B)

The transparent part of the eye that covers the iris and pupil is –
(A) Retina
(B) Lens
(C) Cornea
(D) Iris
Answer: (C)

Which organ is involved in filtering blood and forming urine?
(A) Liver
(B) Kidney
(C) Pancreas
(D) Spleen
Answer: (B)

Which hormone regulates metabolism?
(A) Insulin
(B) Thyroxine
(C) Adrenaline
(D) Testosterone
Answer: (B)

The tube that carries urine from bladder to outside is –
(A) Ureter
(B) Urethra
(C) Nephron
(D) Vas deferens
Answer: (B)

Which element is essential for thyroid function?
(A) Iron
(B) Calcium
(C) Iodine
(D) Magnesium
Answer: (C)

Which part of the brain is concerned with intelligence and memory?
(A) Medulla
(B) Cerebellum
(C) Cerebrum
(D) Pons
Answer: (C)

Which cells in plants are responsible for photosynthesis?
(A) Xylem cells
(B) Phloem cells
(C) Parenchyma cells
(D) Collenchyma cells
Answer: (C)

Which mineral is essential for blood clotting?
(A) Sodium
(B) Calcium
(C) Potassium
(D) Phosphorus
Answer: (B)

Which disease is caused by Vitamin B1 deficiency?
(A) Rickets
(B) Pellagra
(C) Beriberi
(D) Night blindness
Answer: (C)

The main function of mitochondria is –
(A) Protein synthesis
(B) DNA replication
(C) Energy production
(D) Lipid metabolism
Answer: (C)

Which part of the brain controls voluntary actions?
(A) Medulla
(B) Cerebellum
(C) Cerebrum
(D) Spinal cord
Answer: (C)

Which organ is responsible for reabsorption of water in the excretory system?
(A) Liver
(B) Ureter
(C) Kidney
(D) Urinary bladder
Answer: (C)

What is the liquid component of cytoplasm called?
(A) Protoplasm
(B) Nucleoplasm
(C) Cytosol
(D) Organelle
Answer: (C)

Which connective tissue stores fat in the body?
(A) Cartilage
(B) Bone
(C) Areolar
(D) Adipose
Answer: (D)

The number of cranial nerves in humans is –
(A) 10
(B) 12
(C) 14
(D) 16
Answer: (B)

Which hormone is responsible for secondary sexual characters in females?
(A) Estrogen
(B) Testosterone
(C) Progesterone
(D) Oxytocin
Answer: (A)

Which of these is the primary site of protein synthesis?
(A) Nucleus
(B) Ribosome
(C) Golgi body
(D) Lysosome
Answer: (B)

Which system is responsible for detecting stimuli?
(A) Circulatory system
(B) Digestive system
(C) Nervous system
(D) Endocrine system
Answer: (C)

Which of the following is a male reproductive hormone?
(A) Estrogen
(B) Progesterone
(C) Testosterone
(D) LH
Answer: (C)

Which of the following parts of the plant is not involved in reproduction?
(A) Ovule
(B) Leaf
(C) Anther
(D) Stigma
Answer: (B)

Which part of the human brain regulates thirst and hunger?
(A) Medulla
(B) Cerebrum
(C) Hypothalamus
(D) Cerebellum
Answer: (C)