Which part of the human ear helps in maintaining balance?
(A) Cochlea
(B) Pinna
(C) Semicircular canals
(D) Tympanic membrane
Answer: (C)

The hormone secreted by the pancreas to decrease blood sugar level is –
(A) Glucagon
(B) Insulin
(C) Thyroxine
(D) Adrenaline
Answer: (B)

Which type of joint is found in the knee?
(A) Ball and socket joint
(B) Hinge joint
(C) Pivot joint
(D) Gliding joint
Answer: (B)

Which blood cells are also called erythrocytes?
(A) Platelets
(B) White blood cells
(C) Red blood cells
(D) Plasma cells
Answer: (C)

Which pigment is responsible for the yellow color in plants?
(A) Chlorophyll
(B) Xanthophyll
(C) Carotene
(D) Anthocyanin
Answer: (B)

Which part of the brain is known as the “master controller”?
(A) Cerebrum
(B) Hypothalamus
(C) Cerebellum
(D) Medulla
Answer: (B)

Which structure stores urine temporarily?
(A) Ureter
(B) Urethra
(C) Kidney
(D) Bladder
Answer: (D)

Which one of the following is responsible for oxygen transport in blood?
(A) Platelets
(B) Hemoglobin
(C) Plasma
(D) WBC
Answer: (B)

Which of the following is a communicable disease?
(A) Asthma
(B) Diabetes
(C) Tuberculosis
(D) Scurvy
Answer: (C)

Which is the smallest bone in the human body?
(A) Femur
(B) Tibia
(C) Stapes
(D) Ulna
Answer: (C)

Which blood vessel carries blood from the heart to the lungs?
(A) Aorta
(B) Pulmonary artery
(C) Pulmonary vein
(D) Vena cava
Answer: (B)

What is the fluid part of blood called?
(A) Platelet
(B) Plasma
(C) RBC
(D) Lymph
Answer: (B)

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

Which of the following organs is part of the excretory system?
(A) Pancreas
(B) Kidney
(C) Spleen
(D) Gallbladder
Answer: (B)

Which cell organelle is responsible for digestion inside the cell?
(A) Ribosome
(B) Golgi body
(C) Lysosome
(D) Nucleus
Answer: (C)

Which plant part plays the major role in photosynthesis?
(A) Root
(B) Stem
(C) Leaf
(D) Flower
Answer: (C)

Which one of these is a function of the circulatory system?
(A) Control hormones
(B) Produce enzymes
(C) Transport nutrients
(D) Break down food
Answer: (C)

The disease caused by deficiency of protein in children is –
(A) Rickets
(B) Scurvy
(C) Marasmus
(D) Kwashiorkor
Answer: (D)

The pigment melanin is produced by –
(A) Hepatocytes
(B) Keratinocytes
(C) Melanocytes
(D) Osteocytes
Answer: (C)

Which of the following is a hereditary disease?
(A) Hemophilia
(B) Goitre
(C) Diabetes Type 2
(D) Malaria
Answer: (A)

The blood vessel that carries blood from digestive organs to liver is –
(A) Hepatic vein
(B) Renal artery
(C) Hepatic portal vein
(D) Pulmonary vein
Answer: (C)

What is the function of alveoli in the lungs?
(A) Produce sound
(B) Filter dust
(C) Exchange gases
(D) Moisturize air
Answer: (C)

Which layer of the skin contains sweat glands?
(A) Epidermis
(B) Dermis
(C) Hypodermis
(D) Stratum corneum
Answer: (B)

What type of blood do veins usually carry?
(A) Oxygenated
(B) Deoxygenated
(C) Nutrient-rich
(D) Hormone-free
Answer: (B)

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

Which plant hormone causes wilting of leaves?
(A) Auxin
(B) Gibberellin
(C) Cytokinin
(D) Abscisic acid
Answer: (D)

Which organ produces urea as a waste product?
(A) Liver
(B) Kidney
(C) Pancreas
(D) Intestine
Answer: (A)

What type of cell division occurs in reproductive cells?
(A) Binary fission
(B) Mitosis
(C) Meiosis
(D) Fragmentation
Answer: (C)

Which of these is a connective tissue?
(A) Skin
(B) Muscle
(C) Blood
(D) Epithelium
Answer: (C)

Which is the largest gland in the human body?
(A) Pituitary
(B) Pancreas
(C) Liver
(D) Thyroid
Answer: (C)

The site of fertilization in female reproductive system is –
(A) Ovary
(B) Uterus
(C) Vagina
(D) Fallopian tube
Answer: (D)

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

The outermost protective layer of the brain is –
(A) Meninges
(B) Pericardium
(C) Pleura
(D) Dura mater
Answer: (A)

Which part of the flower forms seeds?
(A) Ovary
(B) Ovule
(C) Anther
(D) Stigma
Answer: (B)

Which gas is released during photosynthesis?
(A) CO₂
(B) O₂
(C) N₂
(D) H₂
Answer: (B)

Which of the following is a unicellular fungus?
(A) Rhizopus
(B) Penicillium
(C) Yeast
(D) Mucor
Answer: (C)

The function of stomata is to –
(A) Absorb water
(B) Transport food
(C) Exchange gases
(D) Produce chlorophyll
Answer: (C)

The enzyme found in saliva is –
(A) Pepsin
(B) Amylase
(C) Trypsin
(D) Lipase
Answer: (B)

The site of protein synthesis in a cell is –
(A) Nucleus
(B) Golgi body
(C) Ribosome
(D) Mitochondria
Answer: (C)

Which muscle works continuously without fatigue?
(A) Biceps
(B) Triceps
(C) Cardiac muscle
(D) Skeletal muscle
Answer: (C)

Which vitamin helps in wound healing?
(A) Vitamin C
(B) Vitamin A
(C) Vitamin D
(D) Vitamin E
Answer: (A)

Which of these is the functional unit of the liver?
(A) Nephron
(B) Hepatocyte
(C) Alveolus
(D) Osteocyte
Answer: (B)

Which part of the eye controls the amount of light entering it?
(A) Retina
(B) Iris
(C) Cornea
(D) Sclera
Answer: (B)

Which organ is involved in both digestion and endocrine function?
(A) Liver
(B) Kidney
(C) Pancreas
(D) Gallbladder
Answer: (C)

Which is the main waste product excreted in urine?
(A) Urea
(B) Sugar
(C) Protein
(D) Fats
Answer: (A)

Which plant tissue provides strength and support?
(A) Parenchyma
(B) Collenchyma
(C) Xylem
(D) Phloem
Answer: (B)

Which system controls growth and development in humans?
(A) Circulatory
(B) Nervous
(C) Endocrine
(D) Respiratory
Answer: (C)

Which of these helps regulate body temperature?
(A) Kidney
(B) Lungs
(C) Skin
(D) Liver
Answer: (C)

Which hormone is secreted by the thyroid gland?
(A) Insulin
(B) Thyroxine
(C) Estrogen
(D) Glucagon
Answer: (B)

Which structure in a neuron receives impulses?
(A) Axon
(B) Myelin
(C) Dendrite
(D) Synapse
Answer: (C)