The hormone responsible for lowering blood glucose level is –
(A) Glucagon
(B) Insulin
(C) Adrenaline
(D) Thyroxine
Answer: (B)
Which of the following blood groups is known as the universal recipient?
(A) O
(B) A
(C) B
(D) AB
Answer: (D)
Which disease is caused by Vitamin D deficiency?
(A) Scurvy
(B) Beriberi
(C) Rickets
(D) Pellagra
Answer: (C)
Which cell organelle is known as the ‘powerhouse’ of the cell?
(A) Ribosome
(B) Lysosome
(C) Mitochondria
(D) Golgi apparatus
Answer: (C)
Which of the following is responsible for blood clotting?
(A) WBC
(B) Platelets
(C) RBC
(D) Plasma
Answer: (B)
Which of the following helps in the digestion of fat?
(A) Bile
(B) Amylase
(C) Pepsin
(D) Trypsin
Answer: (A)
The green color of leaves is due to –
(A) Xanthophyll
(B) Chlorophyll
(C) Carotene
(D) Anthocyanin
Answer: (B)
The smallest unit of life is –
(A) Cell
(B) Tissue
(C) Organ
(D) Molecule
Answer: (A)
Which blood component transports oxygen?
(A) Plasma
(B) RBC
(C) WBC
(D) Platelets
Answer: (B)
Which of these is a deficiency disease?
(A) Tuberculosis
(B) Scurvy
(C) Malaria
(D) Typhoid
Answer: (B)
Which of the following is not a part of the female reproductive system?
(A) Ovary
(B) Fallopian tube
(C) Uterus
(D) Vas deferens
Answer: (D)
Which disease is caused by deficiency of Vitamin B1?
(A) Pellagra
(B) Beriberi
(C) Rickets
(D) Scurvy
Answer: (B)
The disease caused by HIV is –
(A) Hepatitis
(B) Cancer
(C) AIDS
(D) Tuberculosis
Answer: (C)
Which part of the eye controls focus?
(A) Retina
(B) Iris
(C) Cornea
(D) Lens
Answer: (D)
Which part of the flower becomes the seed?
(A) Ovary
(B) Ovule
(C) Anther
(D) Petal
Answer: (B)
The pigment that gives color to the skin is –
(A) Hemoglobin
(B) Keratin
(C) Melanin
(D) Myosin
Answer: (C)
Which part of the digestive system absorbs water?
(A) Stomach
(B) Small intestine
(C) Large intestine
(D) Rectum
Answer: (C)
What is the full form of AIDS?
(A) Acquired Immune Deficiency Syndrome
(B) Acute Immune Disease Syndrome
(C) Acquired Immunization Disease Syndrome
(D) Acquired Infection Due to Sex
Answer: (A)
The term ‘photosynthesis’ means –
(A) Synthesis in light
(B) Respiration in dark
(C) Growth in shade
(D) Nutrient absorption
Answer: (A)
Which type of reproduction involves a single parent?
(A) Sexual
(B) Binary fission
(C) Asexual
(D) Fertilization
Answer: (C)
Which organ of the human body contains alveoli?
(A) Kidney
(B) Lungs
(C) Heart
(D) Liver
Answer: (B)
Which is not a type of connective tissue?
(A) Cartilage
(B) Blood
(C) Bone
(D) Muscle
Answer: (D)
The enzyme that breaks down starch into sugar is –
(A) Lipase
(B) Protease
(C) Amylase
(D) Maltase
Answer: (C)
The human body has how many pairs of chromosomes?
(A) 22
(B) 23
(C) 46
(D) 48
Answer: (B)
The acid found in the stomach is –
(A) Nitric acid
(B) Acetic acid
(C) Hydrochloric acid
(D) Sulfuric acid
Answer: (C)
The outer protective layer of a plant cell is –
(A) Cell membrane
(B) Cell wall
(C) Cytoplasm
(D) Nucleus
Answer: (B)
Which of the following animals is cold-blooded?
(A) Whale
(B) Crocodile
(C) Dog
(D) Elephant
Answer: (B)
Which among these is the female reproductive hormone?
(A) Testosterone
(B) Insulin
(C) Estrogen
(D) Adrenaline
Answer: (C)
What is the normal heartbeat rate per minute for an adult?
(A) 60–80
(B) 80–100
(C) 40–60
(D) 100–120
Answer: (A)
What is the primary function of root hairs?
(A) Photosynthesis
(B) Water absorption
(C) Protection
(D) Reproduction
Answer: (B)
The voice box is also called –
(A) Pharynx
(B) Trachea
(C) Larynx
(D) Epiglottis
Answer: (C)
A group of similar cells performing a specific function is called –
(A) Organ
(B) Tissue
(C) System
(D) Organism
Answer: (B)
The part of the brain that maintains posture and balance is –
(A) Cerebrum
(B) Cerebellum
(C) Medulla
(D) Pons
Answer: (B)
Which process converts food into energy?
(A) Digestion
(B) Respiration
(C) Photosynthesis
(D) Transpiration
Answer: (B)
What does the pancreas secrete?
(A) Insulin
(B) Thyroxine
(C) Estrogen
(D) Hemoglobin
Answer: (A)
Which disease is caused by a deficiency of iron?
(A) Anemia
(B) Goitre
(C) Rickets
(D) Scurvy
Answer: (A)
Which part of the human body contains the most water?
(A) Brain
(B) Bones
(C) Muscles
(D) Skin
Answer: (C)
Which part of the human body produces red blood cells?
(A) Liver
(B) Bone marrow
(C) Kidney
(D) Pancreas
Answer: (B)
Which part of the flower attracts insects for pollination?
(A) Sepal
(B) Petal
(C) Anther
(D) Stigma
Answer: (B)
Which blood group lacks both A and B antigens?
(A) A
(B) B
(C) AB
(D) O
Answer: (D)
Which part of the cell acts as a gatekeeper?
(A) Nucleus
(B) Mitochondria
(C) Ribosome
(D) Cell membrane
Answer: (D)
The upper chamber of the heart is called –
(A) Atrium
(B) Ventricle
(C) Auricle
(D) Valve
Answer: (A)
What is the function of ribosomes?
(A) Energy production
(B) Protein synthesis
(C) Photosynthesis
(D) Storage
Answer: (B)
Which cell organelle packages proteins?
(A) Ribosome
(B) Mitochondria
(C) Golgi apparatus
(D) Nucleus
Answer: (C)
Which pigment is found in carrots?
(A) Chlorophyll
(B) Carotene
(C) Xanthophyll
(D) Anthocyanin
Answer: (B)
The bones are connected to muscles by –
(A) Ligaments
(B) Cartilage
(C) Tendons
(D) Discs
Answer: (C)
The chemical substance that carries genetic information is –
(A) Protein
(B) Lipid
(C) DNA
(D) Starch
Answer: (C)
Which part of the body has no blood supply?
(A) Cornea
(B) Retina
(C) Lens
(D) Iris
Answer: (A)
The branch of biology dealing with classification is –
(A) Taxonomy
(B) Ecology
(C) Botany
(D) Physiology
Answer: (A)
The part of the human brain responsible for memory is –
(A) Cerebellum
(B) Hypothalamus
(C) Hippocampus
(D) Pons
Answer: (C)