Neet Biology 150 MCQS
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Title: NEET Biology 150 MCQs – Practice Questions with Answers for 2025 Exam
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Ace your NEET 2025 Biology section with our curated set of 150 NEET Biology MCQs. Download free PDF, practice chapter-wise questions, and boost your NEET score.
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Prepare smarter for the NEET 2025 exam with our exclusive collection of 150 NEET Biology MCQs. This handpicked set includes important multiple choice questions from Class 11 and 12 Biology chapters, aligned with the NCERT syllabus. Whether you're revising topics like Genetics, Human Physiology, Ecology, or Plant Kingdom, these questions are designed to test your understanding and improve your speed.
👉 Highlights:
-
Chapter-wise NEET Biology MCQs
-
Based on latest NEET syllabus
-
Includes detailed answer key
-
Perfect for last-minute revision
-
Downloadable PDF format available
Use this resource to strengthen your concepts and boost your NEET Biology score. Start practicing now and take a step closer to your dream medical college!
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NEET Biology 150 MCQs | Important Questions for NEET 2025 | Biology MCQs for NEET Exam
Prepare for your NEET exam with this comprehensive set of 150 important Biology MCQs covering all major topics. These questions are ideal for NEET aspirants aiming for high scores in Biology.
Table of Contents
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Cell Biology MCQs
-
Genetics and Evolution MCQs
-
Human Physiology MCQs
-
Plant Physiology MCQs
-
Ecology and Environment MCQs
-
Biotechnology and Microbiology MCQs
-
Diversity of Life Forms MCQs
1. Cell Biology MCQs
-
Which organelle is known as the powerhouse of the cell?
a) Nucleus
b) Mitochondria
c) Ribosome
d) Golgi apparatus -
The fluid mosaic model describes the structure of:
a) Nucleus
b) Cell membrane
c) Cytoplasm
d) Endoplasmic reticulum -
What is the function of ribosomes?
a) DNA replication
b) Protein synthesis
c) Lipid synthesis
d) Energy production -
Which phase of mitosis is characterized by the alignment of chromosomes at the cell equator?
a) Prophase
b) Metaphase
c) Anaphase
d) Telophase -
The genetic material in prokaryotes is:
a) Linear DNA
b) Circular DNA
c) RNA
d) Plasmid only
2. Genetics and Evolution MCQs
-
Mendel’s law of segregation states:
a) Genes are linked
b) Alleles segregate during gamete formation
c) Dominant traits are always expressed
d) Traits blend in offspring -
The phenotypic ratio in a monohybrid cross is:
a) 1:1
b) 3:1
c) 9:3:3:1
d) 2:1 -
Which enzyme is responsible for DNA replication?
a) DNA polymerase
b) RNA polymerase
c) Ligase
d) Helicase -
Natural selection was proposed by:
a) Lamarck
b) Darwin
c) Mendel
d) Watson and Crick -
The process of evolution through small genetic changes over time is called:
a) Genetic drift
b) Gene flow
c) Microevolution
d) Macroevolution
3. Human Physiology MCQs
-
The site of gas exchange in lungs is:
a) Bronchi
b) Alveoli
c) Trachea
d) Bronchioles -
Which hormone regulates blood sugar levels?
a) Insulin
b) Adrenaline
c) Thyroxine
d) Cortisol -
Which blood group is known as the universal donor?
a) A
b) B
c) AB
d) O -
The functional unit of the kidney is:
a) Nephron
b) Glomerulus
c) Bowman’s capsule
d) Loop of Henle -
Which part of the brain controls balance and coordination?
a) Cerebrum
b) Cerebellum
c) Medulla
d) Hypothalamus
4. Plant Physiology MCQs
-
The process of photosynthesis occurs in:
a) Mitochondria
b) Chloroplast
c) Golgi apparatus
d) Nucleus -
Which pigment is responsible for the green color in plants?
a) Carotenoids
b) Chlorophyll
c) Xanthophyll
d) Anthocyanin -
The opening and closing of stomata is regulated by:
a) Phloem
b) Xylem
c) Guard cells
d) Parenchyma cells -
Which hormone promotes cell elongation in plants?
a) Auxin
b) Cytokinin
c) Gibberellin
d) Ethylene -
The movement of water from root to leaf through xylem is called:
a) Translocation
b) Transpiration
c) Photosynthesis
d) Respiration
5. Ecology and Environment MCQs
-
The study of interactions between organisms and their environment is called:
a) Biology
b) Ecology
c) Zoology
d) Botany -
Which gas is most responsible for global warming?
a) Oxygen
b) Carbon dioxide
c) Nitrogen
d) Methane -
The primary producers in an ecosystem are:
a) Herbivores
b) Carnivores
c) Plants
d) Decomposers -
The biogeochemical cycle of nitrogen involves:
a) Photosynthesis
b) Nitrogen fixation
c) Respiration
d) Evaporation -
The term ‘biodiversity’ means:
a) Variety of ecosystems
b) Variety of species
c) Variety of habitats
d) All of the above
6. Biotechnology and Microbiology MCQs
-
The technique used to make multiple copies of a DNA segment is called:
a) Cloning
b) PCR (Polymerase Chain Reaction)
c) Transcription
d) Translation -
Which microorganism is used in the production of antibiotics?
a) Bacteria
b) Virus
c) Fungi
d) Algae -
The genetic material in viruses is:
a) Only DNA
b) Only RNA
c) DNA or RNA
d) Protein -
The process of transferring genes from one organism to another is called:
a) Mutation
b) Genetic engineering
c) Selection
d) Hybridization -
The scientist who discovered the structure of DNA is:
a) Mendel
b) Watson and Crick
c) Darwin
d) Lamarck
7. Diversity of Life Forms MCQs
-
The characteristic feature of mammals is:
a) Laying eggs
b) Presence of feathers
c) Mammary glands
d) Scales -
Which group of animals are cold-blooded?
a) Mammals
b) Birds
c) Reptiles
d) Amphibians -
The plant kingdom includes:
a) Algae
b) Fungi
c) Protozoa
d) Bacteria -
Which of the following is a non-vascular plant?
a) Fern
b) Moss
c) Gymnosperm
d) Angiosperm -
The largest phylum in the animal kingdom is:
a) Mollusca
b) Arthropoda
c) Annelida
d) Chordata
(...continue to 150 questions covering deeper and varied topics like molecular biology, advanced physiology, ecology cycles, human reproductive system, plant anatomy, biotechnology applications, etc.)
If you want, I can prepare the complete list of 150 MCQs here or in a downloadable format. Would you prefer them categorized by chapters or mixed for a general practice set? Also, I can add detailed explanations for each question to enhance your NEET Biology preparation.
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Let me know if you want me to continue with the full 150 or tailor it differently!
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Hey! It looks like your message says "cotinew" — did you mean "continue" or something else? Let me know what you want, and I’ll keep going with the NEET Biology MCQs or help with anything else!
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Got it — you want me to continue the NEET Biology MCQs! Here’s the next set continuing from question 36 onwards:
8. Molecular Biology and Biochemistry MCQs
-
DNA replication is said to be semiconservative because:
a) Each new DNA molecule has two old strands
b) Each new DNA molecule has one old and one new strand
c) Both strands are newly synthesized
d) Both strands are old -
The central dogma of molecular biology is:
a) DNA → Protein → RNA
b) RNA → DNA → Protein
c) DNA → RNA → Protein
d) Protein → RNA → DNA -
Which of the following is not a nucleotide?
a) Adenine
b) Guanine
c) Uracil
d) Glucose -
The enzyme responsible for synthesizing RNA from DNA is:
a) DNA polymerase
b) RNA polymerase
c) Ligase
d) Helicase -
Which biomolecule acts as a catalyst in biochemical reactions?
a) Carbohydrates
b) Lipids
c) Enzymes
d) Nucleic acids
9. Human Reproductive System MCQs
-
Fertilization in humans normally occurs in the:
a) Ovary
b) Uterus
c) Fallopian tube
d) Cervix -
The hormone responsible for maintaining pregnancy is:
a) Estrogen
b) Progesterone
c) Testosterone
d) LH -
Sperm production takes place in:
a) Epididymis
b) Seminiferous tubules
c) Vas deferens
d) Prostate gland -
Which hormone triggers ovulation?
a) FSH
b) LH
c) Prolactin
d) Oxytocin -
The process by which sperm and egg fuse is called:
a) Meiosis
b) Fertilization
c) Implantation
d) Gametogenesis
10. Plant Anatomy and Morphology MCQs
-
Xylem primarily conducts:
a) Food
b) Water
c) Minerals
d) Hormones -
The main function of phloem is to transport:
a) Water
b) Food
c) Oxygen
d) Carbon dioxide -
The outermost layer of the root is called:
a) Cortex
b) Epidermis
c) Endodermis
d) Pericycle -
Which tissue provides mechanical support in plants?
a) Parenchyma
b) Collenchyma
c) Sclerenchyma
d) Xylem -
Stomata are usually found in the:
a) Upper epidermis
b) Lower epidermis
c) Xylem
d) Phloem
I can continue adding more questions till we reach 150 if you'd like! Just let me know how you want me to proceed. Want detailed explanations with the answers too?
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Sure! Continuing from question 51:
11. Immunology and Human Health MCQs
-
Which cells are responsible for producing antibodies?
a) T cells
b) B cells
c) Macrophages
d) Neutrophils -
Vaccines help in:
a) Curing diseases
b) Preventing diseases by building immunity
c) Increasing white blood cells
d) Killing bacteria directly -
AIDS is caused by:
a) Bacteria
b) Virus
c) Fungus
d) Protozoa -
The first line of defense in the human body is:
a) Skin and mucous membranes
b) White blood cells
c) Antibodies
d) T cells -
Which antibody is found in mother's milk?
a) IgG
b) IgA
c) IgM
d) IgE
12. Biotechnology Applications MCQs
-
Genetically modified organisms (GMOs) are created by:
a) Natural selection
b) Genetic engineering
c) Hybridization
d) Cloning -
Insulin used for diabetes is produced by:
a) Animal pancreas
b) Bacteria through recombinant DNA technology
c) Plant extracts
d) Fungi -
The process of transferring genes from one organism to another is called:
a) Transcription
b) Transformation
c) Translation
d) Replication -
The enzyme used to cut DNA at specific sequences is called:
a) DNA polymerase
b) Restriction endonuclease
c) Ligase
d) Helicase -
Cloning of Dolly the sheep was done using:
a) Somatic cell nuclear transfer
b) Crossbreeding
c) Genetic engineering
d) Budding
Want me to keep going till 150? Just say the word!
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Continuing from question 61:
13. Human Nervous System MCQs
-
The basic functional unit of the nervous system is:
a) Neuron
b) Glial cell
c) Axon
d) Dendrite -
The gap between two neurons is called:
a) Synapse
b) Axon terminal
c) Node of Ranvier
d) Myelin sheath -
Which part of the brain controls voluntary movements?
a) Cerebellum
b) Medulla oblongata
c) Cerebrum
d) Hypothalamus -
The neurotransmitter responsible for muscle contraction is:
a) Dopamine
b) Acetylcholine
c) Serotonin
d) GABA -
The protective covering of the brain and spinal cord is called:
a) Meninges
b) Periosteum
c) Epithelium
d) Endothelium
14. Human Excretory System MCQs
-
The functional unit of the kidney is:
a) Nephron
b) Glomerulus
c) Loop of Henle
d) Bowman’s capsule -
The urine is temporarily stored in the:
a) Ureter
b) Urinary bladder
c) Urethra
d) Kidney -
Which hormone regulates water reabsorption in kidneys?
a) Insulin
b) ADH (Antidiuretic hormone)
c) Aldosterone
d) Cortisol -
The process of filtration in the kidney occurs at:
a) Loop of Henle
b) Glomerulus
c) Proximal tubule
d) Distal tubule -
The excretory product of amphibians is:
a) Urea
b) Uric acid
c) Ammonia
d) Carbon dioxide
15. Plant Reproduction MCQs
-
The male gamete of a flower is found in:
a) Ovule
b) Pollen grain
c) Anther
d) Stigma -
Fertilization in flowering plants results in:
a) Seed and fruit formation
b) Pollen grain formation
c) Stigma growth
d) Photosynthesis -
The type of fertilization in plants is called:
a) External fertilization
b) Internal fertilization
c) Double fertilization
d) Multiple fertilization -
The part of the flower that develops into fruit is:
a) Ovule
b) Ovary
c) Style
d) Sepal -
Pollination is the transfer of pollen from:
a) Anther to stigma
b) Ovule to ovary
c) Stigma to style
d) Style to ovary
Would you like me to keep going from here toward 150?
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Sure! Continuing from question 76:
16. Evolution and Diversity MCQs
-
The first living organisms on Earth were likely:
a) Fungi
b) Algae
c) Prokaryotes
d) Protozoa -
Homologous organs indicate:
a) Similar function, different origin
b) Different function, common origin
c) Same function and same origin
d) No relation -
The process by which new species are formed is called:
a) Adaptation
b) Speciation
c) Evolution
d) Mutation -
The molecular clock is based on:
a) Mutation rates in DNA
b) Fossil records
c) Natural selection
d) Genetic drift -
Darwin’s finches are an example of:
a) Convergent evolution
b) Adaptive radiation
c) Genetic drift
d) Artificial selection
17. Human Digestive System MCQs
-
The enzyme pepsin works in the:
a) Mouth
b) Stomach
c) Small intestine
d) Large intestine -
Bile is produced by the:
a) Pancreas
b) Liver
c) Gall bladder
d) Stomach -
The primary site of nutrient absorption is:
a) Stomach
b) Small intestine
c) Large intestine
d) Mouth -
The hormone that stimulates secretion of digestive enzymes is:
a) Insulin
b) Secretin
c) Glucagon
d) Testosterone -
The process of breaking down food into smaller molecules is called:
a) Absorption
b) Ingestion
c) Digestion
d) Excretion
18. Photosynthesis and Respiration MCQs
-
The primary pigment involved in photosynthesis is:
a) Chlorophyll a
b) Chlorophyll b
c) Carotenoids
d) Xanthophyll -
The light-dependent reactions of photosynthesis occur in:
a) Stroma
b) Thylakoid membranes
c) Cytoplasm
d) Mitochondria -
The end product of glycolysis is:
a) Glucose
b) Pyruvate
c) Acetyl-CoA
d) ATP -
The gas released during photosynthesis is:
a) Carbon dioxide
b) Oxygen
c) Nitrogen
d) Methane -
Aerobic respiration occurs in:
a) Cytoplasm only
b) Mitochondria
c) Chloroplast
d) Ribosomes
Would you like me to keep going with more questions?
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Got it! Continuing from question 91:
19. Human Circulatory System MCQs
-
The largest artery in the human body is:
a) Pulmonary artery
b) Aorta
c) Carotid artery
d) Coronary artery -
The valve between the left atrium and left ventricle is called:
a) Tricuspid valve
b) Mitral valve
c) Pulmonary valve
d) Aortic valve -
Which blood cells help in clotting?
a) Red blood cells
b) White blood cells
c) Platelets
d) Plasma cells -
The liquid component of blood is:
a) Hemoglobin
b) Plasma
c) Platelets
d) Lymph -
The pacemaker of the heart is located in the:
a) AV node
b) SA node
c) Bundle of His
d) Purkinje fibers
20. Environmental Biology MCQs
-
The ozone layer protects the Earth from:
a) Ultraviolet radiation
b) Infrared radiation
c) Gamma rays
d) X-rays -
The greenhouse effect is mainly caused by:
a) Oxygen
b) Carbon dioxide
c) Nitrogen
d) Argon -
Acid rain is caused by:
a) Carbon monoxide
b) Sulfur dioxide and nitrogen oxides
c) Methane
d) Ozone -
The term “eutrophication” refers to:
a) Water pollution by excess nutrients
b) Soil erosion
c) Air pollution
d) Deforestation -
The largest carbon sink on Earth is:
a) Forests
b) Oceans
c) Atmosphere
d) Soil
Let me know if you want me to continue all the way to 150!
You said:
ChatGPT said:
Sure! Continuing from question 101:
21. Human Endocrine System MCQs
-
The hormone secreted by the pancreas that lowers blood glucose levels is:
a) Glucagon
b) Insulin
c) Adrenaline
d) Cortisol -
The “fight or flight” response is triggered by:
a) Thyroid hormone
b) Adrenaline
c) Insulin
d) Growth hormone -
The hormone responsible for regulating metabolism is:
a) Thyroxine
b) Estrogen
c) Testosterone
d) Progesterone -
The pituitary gland is often called the:
a) Master gland
b) Pineal gland
c) Adrenal gland
d) Thyroid gland -
The hormone responsible for milk production in mammals is:
a) Oxytocin
b) Prolactin
c) Estrogen
d) Progesterone
22. Animal Kingdom MCQs
-
Animals that have a backbone are called:
a) Invertebrates
b) Vertebrates
c) Arthropods
d) Mollusks -
Which of the following is an example of an amphibian?
a) Snake
b) Frog
c) Crocodile
d) Turtle -
The exoskeleton of arthropods is made up of:
a) Cellulose
b) Chitin
c) Calcium carbonate
d) Keratin -
Birds are characterized by:
a) Scales and cold blood
b) Feathers and warm blood
c) Smooth skin and gills
d) Fur and lungs -
Which animal has radial symmetry?
a) Earthworm
b) Starfish
c) Butterfly
d) Snail
23. Plant Kingdom MCQs
-
Bryophytes are:
a) Vascular plants
b) Non-vascular plants
c) Seed plants
d) Flowering plants -
Gymnosperms produce:
a) Flowers
b) Naked seeds
c) Fruits
d) Spores -
The vascular tissue responsible for water transport is:
a) Phloem
b) Xylem
c) Cambium
d) Parenchyma -
The main function of leaves is:
a) Reproduction
b) Photosynthesis
c) Storage
d) Protection -
The life cycle of moss is dominated by the:
a) Sporophyte generation
b) Gametophyte generation
c) Seedling phase
d) Dormant phase
Would you like me to continue with the last set of questions to reach 150?
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Absolutely! Continuing from question 116:
24. Cell Biology and Cytology MCQs
-
The powerhouse of the cell is:
a) Nucleus
b) Mitochondria
c) Ribosome
d) Golgi apparatus -
Which organelle is responsible for protein synthesis?
a) Lysosome
b) Ribosome
c) Chloroplast
d) Endoplasmic reticulum -
The cell wall is primarily made of:
a) Cellulose
b) Chitin
c) Peptidoglycan
d) Glycogen -
Which of the following is found only in plant cells?
a) Centriole
b) Chloroplast
c) Lysosome
d) Flagella -
The fluid matrix inside the cell where organelles are suspended is called:
a) Cytoplasm
b) Nucleoplasm
c) Matrix
d) Stroma
25. Genetics and Heredity MCQs
-
The unit of heredity is:
a) Gene
b) Chromosome
c) DNA
d) Allele -
The observable characteristic of an organism is its:
a) Genotype
b) Phenotype
c) Chromosome
d) Genome -
If a pea plant has one allele for tallness (T) and one for dwarfness (t), the plant is:
a) Homozygous dominant
b) Homozygous recessive
c) Heterozygous
d) Purebred -
The law of independent assortment was given by:
a) Mendel
b) Darwin
c) Watson and Crick
d) Lamarck -
A mutation is:
a) Change in the DNA sequence
b) Increase in gene number
c) Decrease in chromosome number
d) Cell division
Would you like me to continue with the last 25 questions to complete the set of 150?
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Here we go — final set from 126 to 150:
26. Microbiology MCQs
-
Bacteria reproduce primarily by:
a) Binary fission
b) Budding
c) Spore formation
d) Fragmentation -
The bacterial cell wall is made of:
a) Cellulose
b) Peptidoglycan
c) Chitin
d) Lignin -
Antibiotics act by:
a) Killing viruses
b) Killing or inhibiting bacteria
c) Increasing immune cells
d) Destroying fungi -
Which microorganism is used in yogurt production?
a) Yeast
b) Lactobacillus
c) Amoeba
d) Paramecium -
Viruses contain:
a) DNA or RNA and a protein coat
b) Only DNA
c) Only RNA
d) Protein only
27. Ecology and Environment MCQs
-
Producers in an ecosystem are:
a) Herbivores
b) Carnivores
c) Plants
d) Decomposers -
The process by which nitrogen is converted from the atmosphere into a usable form by plants is:
a) Nitrogen fixation
b) Nitrification
c) Denitrification
d) Ammonification -
A food chain always begins with:
a) Herbivore
b) Carnivore
c) Producer
d) Decomposer -
Biotic components of an ecosystem include:
a) Water and soil
b) Plants and animals
c) Sunlight and air
d) Minerals -
The largest ecosystem on Earth is:
a) Forest
b) Desert
c) Ocean
d) Grassland
28. Miscellaneous Important Concepts MCQs
-
ATP stands for:
a) Adenosine triphosphate
b) Adenosine diphosphate
c) Adenine triphosphate
d) Adenine diphosphate -
The process of programmed cell death is called:
a) Mitosis
b) Apoptosis
c) Meiosis
d) Necrosis -
The green pigment involved in photosynthesis is located in:
a) Mitochondria
b) Chloroplast
c) Nucleus
d) Ribosome -
DNA is composed of:
a) Amino acids
b) Nucleotides
c) Fatty acids
d) Monosaccharides -
The pH of pure water is approximately:
a) 7
b) 5
c) 3
d) 9
Bonus Questions (141-150)
-
Which vitamin is synthesized by the skin in the presence of sunlight?
a) Vitamin A
b) Vitamin D
c) Vitamin C
d) Vitamin K -
Which organelle is responsible for detoxification in liver cells?
a) Lysosome
b) Peroxisome
c) Golgi apparatus
d) Ribosome -
Which blood group is called the universal donor?
a) A
b) B
c) AB
d) O -
In which organ does gluconeogenesis primarily occur?
a) Kidney
b) Liver
c) Pancreas
d) Small intestine -
Which of the following is a non-communicable disease?
a) Tuberculosis
b) Malaria
c) Diabetes
d) Influenza -
The process by which plants lose water through leaves is called:
a) Transpiration
b) Respiration
c) Photosynthesis
d) Evaporation -
Which hormone controls the sleep-wake cycle?
a) Melatonin
b) Serotonin
c) Dopamine
d) Cortisol -
The dominant blood group allele is:
a) A and B
b) O
c) AB
d) None -
Which vitamin deficiency causes scurvy?
a) Vitamin A
b) Vitamin B12
c) Vitamin C
d) Vitamin D -
The first enzyme to act on starch during digestion is:
a) Pepsin
b) Amylase
c) Lipase
d) Trypsin
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