Which cell organelle is involved in the synthesis of lipids? (A) Golgi apparatus (B) Smooth endoplasmic reticulum (C) Rough endoplasmic reticulum (D) Lysosomes Answer: (B)
Which vitamin is primarily stored in the liver? (A) Vitamin C (B) Vitamin B1 (C) Vitamin A (D) Vitamin B12 Answer: (C)
Which type of blood vessel has the thinnest walls? (A) Artery (B) Vein (C) Capillary (D) Arteriole Answer: (C)
Which part of the flower develops into the seed? (A) Anther (B) Ovary (C) Ovule (D) Petal Answer: (C)
Which blood group is called the universal donor? (A) A (B) B (C) AB (D) O Answer: (D)
The part of the brain that helps in maintaining posture is – (A) Cerebellum (B) Cerebrum (C) Medulla (D) Hypothalamus Answer: (A)
Which structure in the female reproductive system receives the fertilized egg? (A) Ovary (B) Fallopian tube (C) Uterus (D) Vagina Answer: (C)
Which gland controls the activity of all other endocrine glands? (A) Pancreas (B) Thyroid (C) Adrenal (D) Pituitary Answer: (D)
Which part of a neuron carries impulses away from the cell body? (A) Axon (B) Dendrite (C) Nucleus (D) Synapse Answer: (A)
Which of the following is a disease caused by a deficiency of niacin (Vitamin B3)? (A) Scurvy (B) Rickets (C) Pellagra (D) Beriberi Answer: (C)
Which of the following helps in emulsification of fats? (A) Pepsin (B) Bile (C) Amylase (D) Trypsin Answer: (B)
Which of the following is a function of the pancreas? (A) Excrete urine (B) Produce bile (C) Regulate blood sugar (D) Store glucose Answer: (C)
The large surface area in the small intestine is due to – (A) Rugae (B) Cilia (C) Microvilli (D) Glands Answer: (C)
Which plant tissue conducts water and minerals? (A) Phloem (B) Xylem (C) Parenchyma (D) Collenchyma Answer: (B)
Which disease is characterized by uncontrolled cell division? (A) Malaria (B) Diabetes (C) Cancer (D) Tuberculosis Answer: (C)
The part of the brain responsible for speech is – (A) Occipital lobe (B) Temporal lobe (C) Broca’s area (D) Cerebellum Answer: (C)
Which part of the blood helps in clotting? (A) RBC (B) WBC (C) Plasma (D) Platelets Answer: (D)
The valve between the left atrium and left ventricle is called – (A) Tricuspid valve (B) Bicuspid valve (C) Pulmonary valve (D) Aortic valve Answer: (B)
The main excretory product in birds is – (A) Urea (B) Ammonia (C) Uric acid (D) Creatinine Answer: (C)
Which of the following organisms performs both respiration and photosynthesis? (A) Bacteria (B) Algae (C) Amoeba (D) Fungi Answer: (B)
Which organ maintains the internal environment of the body? (A) Brain (B) Skin (C) Endocrine system (D) Digestive system Answer: (C)
The contraction of the heart is known as – (A) Diastole (B) Systole (C) Pulse (D) Stroke Answer: (B)
Which protein helps transport oxygen in muscles? (A) Hemoglobin (B) Myoglobin (C) Albumin (D) Globulin Answer: (B)
The longest part of the human digestive system is – (A) Esophagus (B) Stomach (C) Small intestine (D) Large intestine Answer: (C)
The fluid-filled sac that cushions joints is called – (A) Synovial membrane (B) Ligament (C) Bursa (D) Cartilage Answer: (C)
Which vitamin is essential for preventing night blindness? (A) Vitamin A (B) Vitamin B (C) Vitamin D (D) Vitamin K Answer: (A)
The primary function of ribosomes is – (A) DNA replication (B) Protein synthesis (C) Energy production (D) Cell division Answer: (B)
Which of the following structures prevents food from entering the windpipe? (A) Larynx (B) Pharynx (C) Epiglottis (D) Esophagus Answer: (C)
The skin pigment that provides protection from UV radiation is – (A) Keratin (B) Melanin (C) Collagen (D) Carotene Answer: (B)
Which part of the brain regulates body temperature? (A) Hypothalamus (B) Medulla (C) Cerebellum (D) Cerebrum Answer: (A)
The part of the flower that attracts insects for pollination is – (A) Sepal (B) Petal (C) Ovary (D) Anther Answer: (B)
Which of the following hormones is released during fear or stress? (A) Estrogen (B) Glucagon (C) Adrenaline (D) Insulin Answer: (C)
Which of these is not a part of the respiratory system? (A) Trachea (B) Bronchi (C) Alveoli (D) Esophagus Answer: (D)
Which chamber of the heart receives oxygenated blood from the lungs? (A) Right atrium (B) Right ventricle (C) Left atrium (D) Left ventricle Answer: (C)
The process of removing metabolic waste from the body is – (A) Respiration (B) Excretion (C) Digestion (D) Absorption Answer: (B)
Which part of the plant is responsible for reproduction? (A) Leaf (B) Stem (C) Flower (D) Root Answer: (C)
Which blood cells are involved in phagocytosis? (A) Platelets (B) Lymphocytes (C) Monocytes (D) RBC Answer: (C)
The disease caused by deficiency of iron is – (A) Goitre (B) Anemia (C) Scurvy (D) Rickets Answer: (B)
The tube that connects the kidney to the bladder is – (A) Ureter (B) Urethra (C) Nephron (D) Vas deferens Answer: (A)
Which of the following is a structural protein in hair and nails? (A) Melanin (B) Hemoglobin (C) Keratin (D) Collagen Answer: (C)
Which enzyme is secreted by the stomach for protein digestion? (A) Pepsin (B) Amylase (C) Lipase (D) Trypsin Answer: (A)
Which blood vessels supply oxygenated blood to the heart muscle itself? (A) Pulmonary arteries (B) Coronary arteries (C) Jugular veins (D) Hepatic veins Answer: (B)
What is the term for inflammation of joints? (A) Arthritis (B) Asthma (C) Bronchitis (D) Hepatitis Answer: (A)
Which part of the nephron reabsorbs most of the filtered water? (A) Loop of Henle (B) Glomerulus (C) Proximal tubule (D) Collecting duct Answer: (C)
Which of the following is responsible for plant growth at the tips? (A) Xylem (B) Phloem (C) Apical meristem (D) Cambium Answer: (C)
Which protein transports oxygen in red blood cells? (A) Myosin (B) Actin (C) Hemoglobin (D) Albumin Answer: (C)