Q. Which of the following is a role of microbes in agriculture? (2021)
A.
Nitrogen fixation
B.
Soil erosion
C.
Pest infestation
D.
Plant diseases
Show solution
Solution
Microbes, particularly certain bacteria, play a vital role in nitrogen fixation, which is essential for plant growth.
Correct Answer:
A
— Nitrogen fixation
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Q. Which of the following is a role of yeast in human welfare? (2020)
A.
Causing infections
B.
Producing alcohol
C.
Decomposing waste
D.
None of the above
Show solution
Solution
Yeast, particularly Saccharomyces cerevisiae, is used in the production of alcohol through fermentation.
Correct Answer:
B
— Producing alcohol
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Q. Which of the following is a sign of potassium deficiency in plants? (2023)
A.
Stunted growth
B.
Leaf curling
C.
Chlorosis
D.
Necrosis
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Solution
Potassium deficiency often results in leaf curling and marginal leaf scorch, indicating poor water regulation.
Correct Answer:
B
— Leaf curling
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Q. Which of the following is a source of genetic variation in a population? (2000)
A.
Mutation
B.
Natural selection
C.
Gene flow
D.
Both mutation and gene flow
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Solution
Both mutation and gene flow contribute to genetic variation in a population, providing the raw material for evolution.
Correct Answer:
D
— Both mutation and gene flow
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Q. Which of the following is a source of genetic variation? (1937)
A.
Mutation
B.
Gene Flow
C.
Sexual Reproduction
D.
All of the above
Show solution
Solution
All of the options listed (mutation, gene flow, and sexual reproduction) are sources of genetic variation in populations.
Correct Answer:
D
— All of the above
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Q. Which of the following is a sustainable practice? (2021)
A.
Overfishing
B.
Monoculture farming
C.
Organic farming
D.
Deforestation
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Solution
Organic farming is considered a sustainable practice as it promotes biodiversity and reduces chemical inputs.
Correct Answer:
C
— Organic farming
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Q. Which of the following is a symptom of diabetes? (2020)
A.
Frequent urination
B.
High fever
C.
Coughing
D.
Skin rash
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Solution
Frequent urination is a common symptom of diabetes due to high blood sugar levels.
Correct Answer:
A
— Frequent urination
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Q. Which of the following is a symptom of malaria? (2018)
A.
High fever
B.
Cough
C.
Rash
D.
Nausea
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Solution
High fever is a common symptom of malaria, caused by Plasmodium parasites.
Correct Answer:
A
— High fever
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Q. Which of the following is a symptom of potassium deficiency in plants? (2022)
A.
Stunted growth
B.
Leaf curling
C.
Necrosis of leaf tips
D.
Yellowing of leaves
Show solution
Solution
Necrosis of leaf tips is a common symptom of potassium deficiency, as potassium is vital for various physiological processes.
Correct Answer:
C
— Necrosis of leaf tips
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Q. Which of the following is a symptom of tuberculosis? (2019)
A.
High fever
B.
Persistent cough
C.
Skin rash
D.
Joint pain
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Solution
A persistent cough is a common symptom of tuberculosis, along with other respiratory issues.
Correct Answer:
B
— Persistent cough
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Q. Which of the following is a synthetic dye used in food? (2023)
A.
Curcumin
B.
Tartrazine
C.
Beetroot red
D.
Carotene
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Solution
Tartrazine is a synthetic yellow dye commonly used in food products.
Correct Answer:
B
— Tartrazine
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Q. Which of the following is a synthetic food colorant? (2021)
A.
Beetroot red
B.
Caramel
C.
Tartrazine
D.
Paprika
Show solution
Solution
Tartrazine is a synthetic yellow food colorant commonly used in various food products.
Correct Answer:
C
— Tartrazine
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Q. Which of the following is a synthetic polymer used in everyday products? (2020)
A.
Cellulose
B.
Polystyrene
C.
Starch
D.
Chitin
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Solution
Polystyrene is a synthetic polymer commonly used in packaging and insulation materials.
Correct Answer:
B
— Polystyrene
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Q. Which of the following is a synthetic sweetener? (2023)
A.
Fructose
B.
Xylitol
C.
Aspartame
D.
Honey
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Solution
Aspartame is a synthetic sweetener used in many low-calorie and sugar-free products.
Correct Answer:
C
— Aspartame
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Q. Which of the following is a systematic error? (2020)
A.
Parallax error
B.
Zero error
C.
Random error
D.
Instrumental error
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Solution
Systematic errors are consistent and repeatable errors associated with faulty equipment or a flawed experiment design, such as zero error.
Correct Answer:
B
— Zero error
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Q. Which of the following is a technique used for DNA sequencing? (2019)
A.
Sanger method
B.
Southern blotting
C.
Western blotting
D.
Northern blotting
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Solution
The Sanger method is a widely used technique for DNA sequencing, allowing for the determination of the nucleotide sequence of DNA.
Correct Answer:
A
— Sanger method
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Q. Which of the following is a tertiary alcohol? (2021)
A.
2-propanol
B.
1-butanol
C.
Cyclopentanol
D.
1-pentanol
Show solution
Solution
2-propanol (isopropanol) is a tertiary alcohol as the hydroxyl group is attached to a carbon that is connected to three other carbons.
Correct Answer:
A
— 2-propanol
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Q. Which of the following is a tertiary amine? (2022)
A.
CH3NH2
B.
C2H5NH2
C.
N(CH3)3
D.
C6H5NH2
Show solution
Solution
N(CH3)3 (trimethylamine) is a tertiary amine as it has three alkyl groups attached to the nitrogen.
Correct Answer:
C
— N(CH3)3
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Q. Which of the following is a type of carbohydrate that is not digestible by humans? (2019)
A.
Glucose
B.
Fructose
C.
Cellulose
D.
Sucrose
Show solution
Solution
Cellulose is a type of carbohydrate that humans cannot digest, but it is important for dietary fiber.
Correct Answer:
C
— Cellulose
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Q. Which of the following is a type of connective tissue? (2022)
A.
Epithelial tissue
B.
Muscle tissue
C.
Nervous tissue
D.
Adipose tissue
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Solution
Adipose tissue is a type of connective tissue that stores fat and provides insulation and cushioning.
Correct Answer:
D
— Adipose tissue
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Q. Which of the following is a type of gymnosperm? (2023)
A.
Pine
B.
Rose
C.
Mango
D.
Coconut
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Solution
Pine is a type of gymnosperm, known for its needle-like leaves and cones.
Correct Answer:
A
— Pine
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Q. Which of the following is a type of non-vascular plant? (2020)
A.
Fern
B.
Moss
C.
Pine
D.
Oak
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Solution
Moss is a type of non-vascular plant, classified under bryophytes.
Correct Answer:
B
— Moss
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Q. Which of the following is a type of RNA that helps in the formation of ribosomes? (2018)
A.
mRNA
B.
tRNA
C.
rRNA
D.
snRNA
Show solution
Solution
rRNA (ribosomal RNA) is a type of RNA that is a key component of ribosomes, facilitating protein synthesis.
Correct Answer:
C
— rRNA
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Q. Which of the following is a type of RNA that helps in the regulation of gene expression? (2020)
A.
mRNA
B.
tRNA
C.
rRNA
D.
miRNA
Show solution
Solution
miRNA (microRNA) is a type of RNA that plays a role in regulating gene expression by binding to mRNA.
Correct Answer:
D
— miRNA
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Q. Which of the following is a unicellular eukaryote? (2023)
A.
Bacteria
B.
Yeast
C.
Amoeba
D.
Paramecium
Show solution
Solution
Paramecium is a unicellular eukaryote.
Correct Answer:
D
— Paramecium
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Q. Which of the following is a unicellular eukaryotic organism? (2020)
A.
Bacteria
B.
Yeast
C.
Amoeba
D.
Paramecium
Show solution
Solution
Paramecium is a unicellular eukaryotic organism.
Correct Answer:
D
— Paramecium
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Q. Which of the following is a unicellular organism? (2019)
A.
Euglena
B.
Mango tree
C.
Human
D.
Frog
Show solution
Solution
Euglena is a unicellular organism.
Correct Answer:
A
— Euglena
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Q. Which of the following is a unit of frequency? (2023)
A.
Hertz
B.
Joule
C.
Newton
D.
Pascal
Show solution
Solution
Hertz (Hz) is the unit of frequency, defined as cycles per second.
Correct Answer:
A
— Hertz
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Q. Which of the following is a vector for malaria? (2019)
A.
Housefly
B.
Mosquito
C.
Tick
D.
Louse
Show solution
Solution
Malaria is transmitted by the female Anopheles mosquito, which acts as a vector.
Correct Answer:
B
— Mosquito
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Q. Which of the following is a vector for the transmission of dengue fever? (2021)
A.
Housefly
B.
Mosquito
C.
Tick
D.
Louse
Show solution
Solution
Dengue fever is transmitted by Aedes mosquitoes.
Correct Answer:
B
— Mosquito
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Showing 2401 to 2430 of 2984 (100 Pages)
NEET MCQ & Objective Questions
The National Eligibility cum Entrance Test (NEET) is a crucial examination for aspiring medical students in India. Scoring well in NEET can open doors to prestigious medical colleges, making it essential for students to prepare effectively. Practicing NEET MCQs and objective questions not only enhances understanding but also boosts confidence, ensuring you are well-prepared for the exam. Engaging with practice questions helps identify important topics and improves your ability to tackle various question formats.
What You Will Practise Here
Human Anatomy and Physiology
Biochemistry and Molecular Biology
Genetics and Evolution
Plant and Animal Physiology
Ecology and Environment
Physics Concepts Relevant to Biology
Important NEET questions on Chemical Bonding and Reactions
Exam Relevance
NEET is aligned with the syllabus of CBSE and various State Boards, ensuring that the topics covered are relevant for both school exams and competitive tests like JEE. Common question patterns include multiple-choice questions that assess conceptual understanding and application of knowledge. By focusing on NEET objective questions, students can familiarize themselves with the exam format and improve their time management skills during the actual test.
Common Mistakes Students Make
Misinterpreting questions due to lack of careful reading.
Overlooking the importance of diagrams and visual aids in biology.
Neglecting to review basic concepts that are foundational for advanced topics.
Confusing similar terms and definitions, especially in biochemistry.
FAQs
Question: How can I improve my NEET MCQ solving skills?Answer: Regular practice with NEET MCQ questions and reviewing explanations for both correct and incorrect answers can significantly enhance your skills.
Question: Are there specific topics I should focus on for NEET preparation?Answer: Yes, focus on high-weightage topics like Human Physiology, Genetics, and Ecology, as they frequently appear in exams.
Start your journey towards success by solving NEET practice MCQs today! Test your understanding, identify your strengths and weaknesses, and prepare effectively for your upcoming exams.