Biology set 1 MCQs

Practice interactive objective questions for this topic. Select an option to instantly verify your answer and read detailed explanations.

Showing 605 questions
Q.451 Which of the following describes 'Biological Control' of pests
A Using chemical pesticides frequently
B Using natural predators and parasites to manage pest populations
C Manually removing pests from crops
D Using genetically modified pest-resistant crops
Discuss / Board
Q.452 The deficiency of which 'Vitamin' causes Pernicious Anemia
A Vitamin B6
B Vitamin B12
C Vitamin B1
D Vitamin B2
Discuss / Board
Q.453 Identify the 'Excretory' organ in the Earthworm
A Malpighian tubules
B Nephridia
C Flame cells
D Kidneys
Discuss / Board
Q.454 Which among the following is an example of 'Active Immunity'
A Antibodies passed from mother to child
B Injection of Antivenom after snake bite
C Immunity developed after vaccination
D Injection of readymade antibodies for Hepatitis
Discuss / Board
Q.455 What is the primary role of 'Ribosomes' in the cell
A ATP production
B Protein synthesis
C Lipid storage
D Digestive enzyme secretion
Discuss / Board
Q.456 Which of the following is 'NOT' a part of the male reproductive system in humans
A Epididymis
B Vas deferens
C Fallopian Tube
D Prostate gland
Discuss / Board
Q.457 The 'Islets of Langerhans' secrete Insulin from which cells
A Alpha cells
B Beta cells
C Delta cells
D F cells
Discuss / Board
Q.458 In a plant 'Xylem' is responsible for the transport of
A Water and minerals only
B Food and minerals
C Water and food
D Hormones only
Discuss / Board
Q.459 The 'Acid Rain' is primarily caused by the atmospheric presence of
A CO and CO2
B SO2 and NO2
C CH4 and CFCs
D Ozone and Oxygen
Discuss / Board
Q.460 Which of the following enzymes is responsible for 'Nitrogen Fixation' in Rhizobium
A Nitratase
B Nitrogenase
C Ammoniase
D Denitrificase
Discuss / Board
Q.461 Identify the 'Inert' gas found in the Earth's atmosphere
A Argon
B Methane
C Ammonia
D Carbon Dioxide
Discuss / Board
Q.462 The 'Lichen' is used as a natural indicator for
A Water pollution
B Air pollution (SO2)
C Noise pollution
D Soil salinity
Discuss / Board
Q.463 The hormone 'Thyroxine' contains which specific element
A Iron
B Iodine
C Calcium
D Zinc
Discuss / Board
Q.464 Which cell organelle is known as the 'Sorting Center' or 'Post Office' of the cell
A Lysosome
B Golgi Apparatus
C Mitochondria
D Ribosome
Discuss / Board
Q.465 Which of the following is 'NOT' a part of a standard Ecosystem
A Producers
B Consumers
C Decomposers
D Pollutants
Discuss / Board
Q.466 The 'Optic Nerve' exits the eyeball at a point where there are no rods or cones This point is the
A Fovea
B Blind Spot
C Macula
D Cornea
Discuss / Board
Q.467 The 'RBCs' in humans are biconcave and lack a nucleus to
A Protect them from viral infections
B Increase the surface area and space for hemoglobin
C Move faster in the blood stream
D Avoid being destroyed by the spleen
Discuss / Board
Q.468 Identify the 'First' enzyme produced by a newborn for the digestion of milk
A Pepsin
B Rennin
C Trypsin
D Lipase
Discuss / Board
Q.469 The 'Red Data Book' contains information about
A Red colored plants
B Threatened and endangered species
C Extinct minerals
D Invasive species only
Discuss / Board
Q.470 Which of the following is a 'Double Stranded' DNA virus
A HIV
B Bacteriophage T2
C Influenza Virus
D Ebola Virus
Discuss / Board
Q.471 The 'Basal Metabolic Rate' (BMR) is primarily controlled by which hormone
A Insulin
B Thyroxine
C Glucagon
D Cortisol
Discuss / Board
Q.472 In the human eye 'Cataract' is the condition where
A The retina is damaged by high pressure
B The lens becomes opaque
C The cornea becomes cone-shaped
D The optic nerve is severed
Discuss / Board
Q.473 Which 'Phytohormone' is used to speed up the malting process in the brewing industry
A Auxin
B Gibberellin
C Ethylene
D Abscisic Acid
Discuss / Board
Q.474 Identify the 'Non-Endocrine' function of the Pancreas
A Secreting Insulin
B Secreting Glucagon
C Secreting Pancreatic Juice containing enzymes
D Secreting Somatostatin
Discuss / Board
Q.475 The 'Ozone Hole' is most prominent over which region
A Equator
B Antarctica
C Sahara Desert
D Himalayas
Discuss / Board
Q.476 Which of the following is an 'Autoimmune' disease
A Tuberculosis
B Rheumatoid Arthritis
C Malaria
D Scurvy
Discuss / Board
Q.477 The 'Bilateral' symmetry and 'Triploblastic' nature are features of which phylum
A Cnidaria
B Porifera
C Platyhelminthes
D Ctenophora
Discuss / Board
Q.478 Identify the 'Storage' form of carbohydrates in Plants
A Glycogen
B Starch
C Cellulose
D Glucose
Discuss / Board
Q.479 The 'Endoplasmic Reticulum' is called 'Rough' when it has which of the following attached to its surface
A Lysosomes
B Ribosomes
C Mitochondria
D Golgi bodies
Discuss / Board
Q.480 Identify the hormone responsible for the 'Female' secondary sexual characteristics
A Testosterone
B Estrogen
C Progesterone
D Prolactin
Discuss / Board

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