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Biology MCQ for NEET Students Preparation Free PDF
The first stable product of photosynthesis is –
(a) Glucose
(b) Sucrose
(c) Starch
(d) Phosphoglyceric acid
Option d – Phosphoglyceric acid
Widal test is used for the diagnosis of ( Biology MCQ for NEET Preparation Free PDF )
(a) Malaria
(b) Cholera
(c) Typhoid
(d) Salmonellosis
Option c – Typhoid
Where does the cabbage store food?
(a) Stem
(b) Root
(c) Leaves
(d) Fruit
Option c – Leaves
Activity of an enzyme can be modulated by a change in ( Biology MCQ for NEET Preparation Free PDF )
(a) Light
(b) pH
(c) Rainfall
(d) Humidity
Option b – pH
The animal that does not develop hypertension despite heavy salt intake is –
(a) Camel
(b) Sheep
(c) Tiger
(d) Buffalo
Option a – Camel
The primary producers in an ecosystem are ( Biology MCQ for NEET Preparation Free PDF )
(a) Men
(b) Women
(c) Bacteria
(d) Plants
Option d – Plants
Which one of the following is the respiratory pigment in humans?
(a) Haemoglobin
(b) Haemoerythrin
(c) Haemocyanin
(d) β-carotene
Option a – Haemoglobin
(a) Milk production
(b) Fish production
(c) Wheat production
(d) Flood control
Option a – Milk production
What does the ‘Ozone layer’ absorb?
(a) X-rays
(b) UV-rays
(c) Gamma rays
(d) Infrared rays
Option b – UV-rays
Which one of the following organs converts glycogen into glucose and purifies the blood? ( Biology MCQ for NEET Preparation Free PDF )
(a) Liver
(b) Spleen
(c) Lungs
(d) Kidney
Option a – Liver
Blood pressure is controlled by –
(a) Thymus
(b) Corpus luteum
(c) Adrenal gland
(d) Thyroid gland
Option c – Adrenal gland
Bee keeping is known as ( Biology MCQ for NEET Preparation Free PDF )
(a) Agriculture
(b) Apiculture
(c) Aquaculture
(d) Sericulture
Option b – Apiculture
Which of the following is commonly used in preparing custard powder?
(a) Maize
(b) Rice
(c) Wheat
(d) Raggi
Option a – Maize
Linseed is obtained from ( Biology MCQ for NEET Preparation Free PDF )
(a) Sesame
(b) Flax
(c) Castor
(d) Groundnut
Option b – Flax
Lungs of plants are –
(a) Stems
(b) Leaves
(c) Roots
(d) Flowers
Option b – Leaves
The biggest single-celled organism is ( Biology MCQ for NEET Preparation Free PDF )
(a) Yeast
(b) Amoeba
(c) Acetobacter
(d) Acetabularia
Option b – Amoeba
Fluid part of blood devoid of corpuscles is called –
(a) Serum
(b) Plasma
(c) Lymph
(d) Tissue fluid
Option a – Serum
Which one of the following does not secrete any digestive enzyme? ( Biology MCQ for NEET Preparation Free PDF )
(a) Pancreas
(b) Liver
(c) Salivary gland
(d) Glands of small intestine
Option b – Liver
The vitamin most readily destroyed by heat is –
(a) Thiamine
(b) Riboflavin
(c) Tocopherols
(d) Ascorbic acid
Option d – Ascorbic acid
Protein which renders a cell less susceptible to attack by viruses is called ( Biology MCQ for NEET Preparation Free PDF )
(a) Hybridoma
(b) Actomyosin
(c) Interferon
(d) Chloromycetin
Option c – Interferon
Which one of the following organs excretes water, fat, and various catabolic wastes?
(a) Skin
(b) Kidney
(c) Spleen
(d) Salivary glands
Option b – Kidney
The only bird that flies backward is ( Biology MCQ for NEET Preparation Free PDF )
(a) Koel
(b) Hummingbird
(c) Siberian crane
(d) Sparrow
Option b – Hummingbird
Hypertension is the term used for –
(a) Increase in blood pressure
(b) Increase in heart rate
(c) Decrease in blood pressure
(d) Decrease in heart rate
Option a – Increase in blood pressure
Minamata disease was caused by ( Biology MCQ for NEET Preparation Free PDF )
(a) Zinc
(b) Lead
(c) Cadmium
(d) Mercury
Option d – Mercury
Transfer of genetic information from one generation to the next generation is by –
(a) RNA
(b) DNA
(c) Codon
(d) Messenger RNA
Option b – DNA
Which is the only mammal that can fly? ( Biology MCQ for NEET Preparation Free PDF )
(a) Lizard
(b) Hen
(c) Bat
(d) Whale
Option c – Bat
Tendons and ligaments are –
(a) Skeletal tissue
(b) Muscular tissue
(c) Connective tissue
(d) Epithelial tissue
Option c – Connective tissue
What may be the cause of malfunctioning of the thyroid gland? ( Biology MCQ for NEET Preparation Free PDF )
(a) Vitamin C deficiency
(b) Iron deficiency
(c) Iodine deficiency
(d) Calcium deficiency
Option c – Iodine deficiency
Which is the gland that holds the body’s thermostat?
(a) Thyroid
(b) Pituitary
(c) Pineal
(d) Hypothalamus
Option d – Hypothalamus
Myoglobin contains the metal ( Biology MCQ for NEET Preparation Free PDF )
(a) Iron
(b) Silver
(c) Gold
(d) Copper
Option d – Copper
Number of spinal nerves is –
(a) 15 pairs
(b) 12 pairs
(c) 10 pairs
(d) None of these
Option d – None of these
Corpus luteum is a mass of cells found in ( Biology MCQ for NEET Preparation Free PDF )
(a) Spleen
(b) Ovary
(c) Brain
(d) Pancreas
Option b – Ovary
In which one of the following animals is skin a respiratory organ?
(a) Spark
(b) Frog
(c) Whale
(d) Cockroach
Option b – Frog
In the context of Indian wildlife, the flying fox is a ( Biology MCQ for NEET Preparation Free PDF )
(a) Kite
(b) Bat
(c) Vulture
(d) Stork
Option a – Kite
Largest Indian fish is –
(a) Whale shark
(b) Hilsa
(c) Stone fish
(d) None of these
Option a – Whale shark
Alpha-keratin is a protein present in ( Biology MCQ for NEET Preparation Free PDF )
(a) Egg
(b) Skin
(c) Blood
(d) Lymph
Option b – Skin
Xenobiotics that are inherently resistant to microbial attack are called –
(a) Persistent
(b) Biodegradable
(c) Recalcitrant
(d) All of these
Option c – Recalcitrant
Life originated by chemosynthesis was proved in the laboratory by ( Biology MCQ for NEET Preparation Free PDF )
(a) Pasteur
(b) Miller
(c) Sanger
(d) Aristotle
Option b – Miller
Tachycardia is a condition characterized by –
(a) Heartbeat stops
(b) Heart fails to pump
(c) Heart rate increases from normal
(d) Heart rate decreases from normal
Option c – Heart rate increases from normal
Which of the following is a form of sexual reproduction? ( Biology MCQ for NEET Preparation Free PDF )
(a) Budding
(b) Fission
(c) Fragmentation
(d) Hermaphroditism
Option d – Hermaphroditism
In India, Dugong (sea cow) is found in the bio-reserve site of –
(a) Manas
(b) Nokrek
(c) Sunderbans
(d) Gulf of Mannar
Option d – Gulf of Mannar
The best milch breed in the world is ( Biology MCQ for NEET Preparation Free PDF )
(a) Deoni
(b) Sindhi
(c) Holstein-Friesian
(d) Chittagong
Option c – Holstein-Friesian
Oxyntic cells are responsible for the secretion of –
(a) Pepsin
(b) Lactic acid
(c) Enterokinase
(d) Hydrochloric acid
Option d – Hydrochloric acid
Addition of excessive amounts of heat to a lake is called ( Biology MCQ for NEET Preparation Free PDF )
(a) Heat Bloom
(b) Thermal pollution
(c) Greenhouse effect
(d) Refrigeration effect
Option c – Greenhouse effect
Which one of the following products results when it readily loses active oxygen?
(a) Ozone
(b) Hydrogen
(c) Water
(d) Nascent hydrogen
Option c – Water
The fleshy thalamus is edible in ( Biology MCQ for NEET Preparation Free PDF )
(a) Mango
(b) Orange
(c) Apple
(d) Tomato
Option c – Apple
Carolus Linnaeus’ system of classification is –
(a) Binomial
(b) Natural
(c) Phylogenetic
(d) Artificial
Option a – Binomial
Fish is a first-class protein because it contains –
(a) All essential fatty acids
(b) No amino acids
(c) Essential amino acids
(d) Non-essential amino acids
Option c – Essential amino acids
Which one of the following types of malaria is pernicious malaria?
(a) Malignant
(b) Relapse
(c) Tertian
(d) Vivax
Option a – Malignant
Which of the following makes the skin layer impervious to water?
(a) Melanin
(b) Collagen
(c) Chitin
(d) Keratin
Option d – Keratin
Which of the following diseases usually spread through milk?
(a) Cholera
(b) Jaundice
(c) Diphtheria
(d) Tuberculosis
Option d – Tuberculosis
Animals having an open circulatory system possess –
(a) Haemocoel
(b) Spongecoel
(c) Coelenteron
(d) Pseudocoel
Option a – Haemocoel
Which of the following snakes, killed for its beautiful skin, has been declared an endangered species?
(a) Python
(b) Krait
(c) Russel’s viper
(d) King cobra
Option c – Russel’s viper
From which of the following is quinine extracted?
(a) Datura
(b) Cinchona
(c) Opium
(d) Sarpagandha
Option b – Cinchona
The coding segment of DNA is called –
(a) Codon
(b) Muton
(c) Exon
(d) Intron
Option a – Codon
Blubber is –
(a) A layer of thick fat
(b) Fungal infection of rice plants
(c) A milky secretion of the rubber plant
(d) A device to trap insects by some aquatic plants
Option a – A layer of thick fat
The dormancy period of animals during the winter season is called –
(a) Mutation
(b) Regeneration
(c) Hibernation
(d) Aestivation
Option c – Hibernation
A large number of identical plants can be obtained in a short span of time through –
(a) Stem cuttings
(b) Tissue culture technique
(c) Hydroponics method
(d) Large number of seeds of a single plant
Option b – Tissue culture technique
AIDS virus has –
(a) Single-stranded RNA
(b) Single-stranded DNA
(c) Double-stranded RNA
(d) Double-stranded DNA
Option a – Single-stranded RNA
Which wood will become useless soon after being exposed to open air?
(a) Fibrous wood
(b) Softwood
(c) Wet wood
(d) Hardwood
Option c – Wet wood
Which of the following is known as vitamin B₁?
(a) Ascorbic acid
(b) Thiamin
(c) Retinol
(d) Riboflavin
Option b – Thiamin
A plant with compound leaves is –
(a) Coconut
(b) Papaya
(c) Peepal
(d) Hibiscus
Option a – Coconut
Hydroponics is a method of plant culture without using –
(a) Soil
(b) Sand
(c) Light
(d) Water
Option a – Soil
Which of the following three R’s are regarded as environment-friendly?
(a) Read, Register, Recall
(b) Reduce, Reuse, Recycle
(c) Random, Reduce, Recall
(d) Reduce, Rebuild, Restrict
Option b – Reduce, Reuse, Recycle
The process through which excess light energy is dissipated in photosynthesis is known as –
(a) Photolysis
(b) Quenching
(c) Scavenging
(d) Photophosphorylation
Option b – Quenching
Respiration is regarded as a –
(a) Anabolic process
(b) Reduction process
(c) Catabolic process
(d) Synthetic process
Option c – Catabolic process
The ambient air is stable when the ambient lapse rate is –
(a) Sub-adiabatic
(b) Super-adiabatic
(c) Neutrally stable
(d) Hyper-adiabatic
Option a – Sub-adiabatic
The fasting blood glucose level in an adult (mg/100ml) is –
(a) 60
(b) 100
(c) 160
(d) 200
Option b – 100
The disease that has been eradicated from the world is –
(a) Chickenpox
(b) Smallpox
(c) Leprosy
(d) Poliomyelitis
Option b – Smallpox
Which of the following amphibians lacks a tongue?
(a) Salamander
(b) Necturus
(c) Sphenodon
(d) Ichthyophis
Option d – Ichthyophis
The life span of RBC in humans is –
(a) 120 days
(b) 150 days
(c) 180 days
(d) 190 days
Option b – 150 days
The vector of Kala-Azar is –
(a) Sand fly
(b) Tse-Tse fly
(c) Culex mosquito
(d) Anopheles mosquito
Option a – Sand fly
The largest organ of the human body is –
(a) Liver
(b) Heart
(c) Brain
(d) Kidney
Option a – Liver
The scientific study of teeth is called –
(a) Cosmology
(b) Ornithology
(c) Odontology
(d) Phenology
Option c – Odontology
The yellow color of cow’s milk is due to the presence of –
(a) Riboflavin
(b) Carotene
(c) Ribulose
(d) Xanthophyll
Option b – Carotene
Birds that swim in water have –
(a) Long beaks
(b) Toes with claws
(c) Webbed feet
(d) Broad wings
Option c – Webbed feet
Which of the following is NOT a stem modification?
(a) Corm of Arvi
(b) Tuber of potato
(c) Bulb of onion
(d) Tuber of sweet potato
Option d – Tuber of sweet potato
What does enamel cover?
(a) Cementum
(b) Crown of the teeth
(c) Dentin on all sides
(d) Cementum and partly dentin
Option b – Crown of the teeth
The trace metal present in insulin is –
(a) Cobalt
(b) Zinc
(c) Iron
(d) Manganese
Option b – Zinc
The newly hatched tadpole breathes through its –
(a) Internal gills
(b) External gills
(c) Lungs
(d) All of these
Option b – External gills
Green blocks are referred to –
(a) Bio-bricks
(b) Pro-biotic curd
(c) Green cover
(d) Green ministry
Option a – Bio-bricks
The concept of tissue culture was introduced by –
(a) Hanning
(b) Halfmeister
(c) Haberland
(d) Hanstein
Option c – Haberland
Blood cancer is commonly known as –
(a) Haemophilia
(b) Leucoderma
(c) Leukaemia
(d) Sickle-cell anaemia
Option c – Leukaemia
Coupling and repulsion are the two states of –
(a) Chiasma
(b) Linkage
(c) Mutation
(d) Crossing over
Option b – Linkage
Which organ of the body never rests?
(a) Heart
(b) Liver
(c) Eyes
(d) Pancreas
Option a – Heart
Fermentation is a process of decomposition of an organic compound by –
(a) Enzymes
(b) Free radicals
(c) Carbanions
(d) Catalysts
Option a – Enzymes
Rod-shaped bacteria are called –
(a) Coma
(b) Spirillum
(c) Bacillus
(d) Coccus
Option c – Bacillus
The age of trees is determined by its –
(a) Height
(b) Girth
(c) Growth rings
(d) General appearance
Option c – Growth rings
Which among the following elements increases the absorption of water and calcium in plants?
(a) Copper
(b) Boron
(c) Manganese
(d) Molybdenum
Option b – Boron
Lac, which is used as sealing wax, is produced by –
(a) Root
(b) Bird
(c) Stem
(d) Insect
Option d – Insect
Plasma membrane in eukaryotic cells is made up of –
(a) Lipoprotein
(b) Phospho-protein
(c) Phospholipid
(d) Phospholipo-protein
Option c – Phospholipid
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