Which gland is located in the neck and controls metabolism?
(A) Pituitary
(B) Thyroid
(C) Adrenal
(D) Pancreas
Answer: (B)

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

Which structure connects the throat to the stomach?
(A) Trachea
(B) Larynx
(C) Esophagus
(D) Pharynx
Answer: (C)

Which of the following is the most common blood type in humans?
(A) A
(B) B
(C) AB
(D) O
Answer: (D)

Which part of the brain regulates emotions like fear and pleasure?
(A) Medulla
(B) Cerebellum
(C) Limbic system
(D) Cerebrum
Answer: (C)

Which nutrient helps in the building of muscles?
(A) Fats
(B) Proteins
(C) Carbohydrates
(D) Vitamins
Answer: (B)

Which part of the eye allows light to enter?
(A) Iris
(B) Cornea
(C) Lens
(D) Retina
Answer: (B)

Which is the outermost layer of a leaf?
(A) Cuticle
(B) Xylem
(C) Phloem
(D) Mesophyll
Answer: (A)

Which of these is a primary consumer in a food chain?
(A) Tiger
(B) Lion
(C) Cow
(D) Vulture
Answer: (C)

Which part of the heart receives deoxygenated blood?
(A) Left atrium
(B) Right atrium
(C) Left ventricle
(D) Aorta
Answer: (B)

Which gas is exhaled during respiration?
(A) Oxygen
(B) Carbon dioxide
(C) Nitrogen
(D) Hydrogen
Answer: (B)

What do we call the total number of chromosomes in human body cells?
(A) 42
(B) 44
(C) 46
(D) 48
Answer: (C)

The muscles of the heart are called –
(A) Voluntary muscles
(B) Smooth muscles
(C) Cardiac muscles
(D) Skeletal muscles
Answer: (C)

What is the function of phloem in plants?
(A) Transport water
(B) Photosynthesis
(C) Transport food
(D) Support
Answer: (C)

Which part of the human body produces bile?
(A) Gallbladder
(B) Liver
(C) Stomach
(D) Pancreas
Answer: (B)

Which enzyme digests proteins in the stomach?
(A) Pepsin
(B) Trypsin
(C) Amylase
(D) Lipase
Answer: (A)

Which structure in plants helps in gaseous exchange?
(A) Stomata
(B) Xylem
(C) Phloem
(D) Chloroplast
Answer: (A)

Which of the following is a renewable source of energy?
(A) Coal
(B) Petroleum
(C) Sunlight
(D) Natural gas
Answer: (C)

Which vitamin is produced in the body by exposure to sunlight?
(A) Vitamin A
(B) Vitamin B
(C) Vitamin C
(D) Vitamin D
Answer: (D)

Which gland is located on top of the kidneys?
(A) Pituitary
(B) Thyroid
(C) Adrenal
(D) Pineal
Answer: (C)

Which of the following is a plant disease?
(A) Rust
(B) Rinderpest
(C) Anthrax
(D) Scabies
Answer: (A)

The large intestine mainly absorbs –
(A) Proteins
(B) Fats
(C) Water
(D) Carbohydrates
Answer: (C)

Which cell organelle is called the control center of the cell?
(A) Ribosome
(B) Mitochondria
(C) Nucleus
(D) Golgi body
Answer: (C)

The process by which plants lose water vapor is –
(A) Respiration
(B) Photosynthesis
(C) Transpiration
(D) Absorption
Answer: (C)

Which is a non-communicable disease?
(A) Cholera
(B) Tuberculosis
(C) Diabetes
(D) Influenza
Answer: (C)

Which of the following is a viral disease?
(A) Typhoid
(B) Dengue
(C) Tuberculosis
(D) Cholera
Answer: (B)

Which of these organisms carries malaria parasite?
(A) Male Anopheles
(B) Female Culex
(C) Female Anopheles
(D) Housefly
Answer: (C)

Which nutrient is responsible for providing instant energy?
(A) Protein
(B) Carbohydrate
(C) Fat
(D) Vitamin
Answer: (B)

Which mineral helps in the formation of teeth and bones?
(A) Iron
(B) Calcium
(C) Potassium
(D) Zinc
Answer: (B)

What is the name of the largest artery in the human body?
(A) Pulmonary artery
(B) Coronary artery
(C) Aorta
(D) Renal artery
Answer: (C)

Which of these is a secondary sexual characteristic in males?
(A) Development of breasts
(B) Menstruation
(C) Deepening of voice
(D) Ovulation
Answer: (C)

What is the smallest unit of heredity?
(A) Chromosome
(B) Gene
(C) DNA
(D) Nucleus
Answer: (B)

The waste excreted by lungs is –
(A) Urea
(B) Salt
(C) Carbon dioxide
(D) Water
Answer: (C)

The pigment responsible for red color in blood is –
(A) Hemoglobin
(B) Melanin
(C) Myoglobin
(D) Keratin
Answer: (A)

Which part of the heart pumps blood to the body?
(A) Right atrium
(B) Left atrium
(C) Right ventricle
(D) Left ventricle
Answer: (D)

Which of these is not a part of the excretory system?
(A) Kidney
(B) Ureter
(C) Lung
(D) Urethra
Answer: (C)

Which cell organelle is involved in respiration?
(A) Mitochondria
(B) Nucleus
(C) Chloroplast
(D) Ribosome
Answer: (A)

The heart is enclosed in a membrane called –
(A) Peritoneum
(B) Pericardium
(C) Pleura
(D) Meninges
Answer: (B)

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

Which component of blood is responsible for carrying nutrients?
(A) RBC
(B) WBC
(C) Plasma
(D) Platelets
Answer: (C)

What type of muscle is found in the digestive tract?
(A) Skeletal
(B) Smooth
(C) Cardiac
(D) Voluntary
Answer: (B)

Which is a part of the female reproductive system?
(A) Testes
(B) Penis
(C) Uterus
(D) Scrotum
Answer: (C)

Which one of these is a hereditary disease?
(A) Diabetes Type 2
(B) Hemophilia
(C) Tuberculosis
(D) Goitre
Answer: (B)

Which hormone regulates the sleep-wake cycle?
(A) Oxytocin
(B) Melatonin
(C) Serotonin
(D) Dopamine
Answer: (B)

Which plant hormone is involved in cell division?
(A) Auxin
(B) Cytokinin
(C) Gibberellin
(D) Abscisic acid
Answer: (B)

The air sacs in lungs where gas exchange occurs are –
(A) Bronchi
(B) Bronchioles
(C) Alveoli
(D) Trachea
Answer: (C)

Which type of immunity is acquired after infection?
(A) Passive
(B) Natural active
(C) Artificial passive
(D) Innate
Answer: (B)

The enzyme that digests carbohydrates in the mouth is –
(A) Amylase
(B) Lipase
(C) Pepsin
(D) Trypsin
Answer: (A)

Which structure controls activities of the entire cell?
(A) Ribosome
(B) Mitochondria
(C) Nucleus
(D) Cytoplasm
Answer: (C)

Which of the following is not a function of bones?
(A) Protection
(B) Movement
(C) Digestion
(D) Support
Answer: (C)