Q. Which of the following is a common application of yeast in human welfare? (2021)
A.
Antibiotic production
B.
Alcoholic fermentation
C.
Pathogen control
D.
Nutrient recycling
Show solution
Solution
Yeast is commonly used in alcoholic fermentation to produce beverages like beer and wine.
Correct Answer:
B
— Alcoholic fermentation
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Q. Which of the following is a common method for producing transgenic plants? (2022)
A.
Microinjection
B.
Agrobacterium-mediated transformation
C.
Somatic cell nuclear transfer
D.
CRISPR-Cas9
Show solution
Solution
Agrobacterium-mediated transformation is a widely used method for producing transgenic plants by transferring genes into plant cells.
Correct Answer:
B
— Agrobacterium-mediated transformation
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Q. Which of the following is a common respiratory disease characterized by inflammation of the airways? (2022)
A.
Asthma
B.
Pneumonia
C.
Tuberculosis
D.
Emphysema
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Solution
Asthma is a chronic condition that causes inflammation and narrowing of the airways, leading to difficulty in breathing.
Correct Answer:
A
— Asthma
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Q. Which of the following is a common symptom of chronic obstructive pulmonary disease (COPD)? (2023)
A.
Coughing
B.
Fever
C.
Nausea
D.
Headache
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Solution
Coughing is a common symptom of COPD, often accompanied by mucus production and difficulty breathing.
Correct Answer:
A
— Coughing
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Q. Which of the following is a common symptom of diabetes? (2019)
A.
Increased thirst
B.
Skin rash
C.
Headache
D.
Nausea
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Solution
Increased thirst is a common symptom of diabetes due to high blood sugar levels.
Correct Answer:
A
— Increased thirst
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Q. Which of the following is a common symptom of influenza? (2019)
A.
High fever
B.
Skin rash
C.
Nausea
D.
Joint pain
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Solution
High fever is a common symptom of influenza, along with other symptoms like cough and body aches.
Correct Answer:
A
— High fever
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Q. Which of the following is a common symptom of pregnancy? (2020)
A.
Increased appetite
B.
Weight loss
C.
Frequent headaches
D.
Nausea
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Solution
Nausea, often referred to as morning sickness, is a common symptom experienced during early pregnancy.
Correct Answer:
D
— Nausea
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Q. Which of the following is a common symptom of sexually transmitted infections? (2019)
A.
Headache
B.
Fever
C.
Unusual discharge
D.
Nausea
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Solution
Unusual discharge is a common symptom associated with many sexually transmitted infections.
Correct Answer:
C
— Unusual discharge
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Q. Which of the following is a common symptom of STIs? (2019)
A.
Headache
B.
Fever
C.
Unusual discharge
D.
Nausea
Show solution
Solution
Unusual discharge is a common symptom associated with many sexually transmitted infections.
Correct Answer:
C
— Unusual discharge
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Q. Which of the following is a common use of bacteria in agriculture? (2023)
A.
Pesticides
B.
Fertilizers
C.
Nitrogen fixation
D.
All of the above
Show solution
Solution
Bacteria are used in agriculture for various purposes, including as pesticides, fertilizers, and for nitrogen fixation.
Correct Answer:
D
— All of the above
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Q. Which of the following is a common use of microbes in agriculture? (2023)
A.
Pesticides
B.
Fertilizers
C.
Biopesticides
D.
All of the above
Show solution
Solution
Microbes are used in agriculture for various purposes, including biopesticides and fertilizers.
Correct Answer:
D
— All of the above
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Q. Which of the following is a common use of probiotics? (2023)
A.
To treat infections
B.
To improve gut health
C.
To cause diseases
D.
To produce antibiotics
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Solution
Probiotics are beneficial bacteria that help improve gut health and can prevent infections.
Correct Answer:
B
— To improve gut health
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Q. Which of the following is a common use of yeast in food production? (2019)
A.
Making cheese
B.
Making bread
C.
Making vinegar
D.
Making yogurt
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Solution
Yeast is commonly used in bread making due to its ability to ferment sugars and produce carbon dioxide.
Correct Answer:
B
— Making bread
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Q. Which of the following is a common vector used in gene cloning? (2019)
A.
Plasmids
B.
Ribosomes
C.
Chromosomes
D.
Nucleotides
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Solution
Plasmids are commonly used as vectors in gene cloning because they can replicate independently within a host cell.
Correct Answer:
A
— Plasmids
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Q. Which of the following is a common vector used in genetic engineering? (2019)
A.
Plasmids
B.
Ribosomes
C.
Chromosomes
D.
Nucleotides
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Solution
Plasmids are commonly used as vectors to transfer genetic material into host cells in genetic engineering.
Correct Answer:
A
— Plasmids
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Q. Which of the following is a correct example of binomial nomenclature? (2022)
A.
Homo sapiens
B.
Homo Sapiens
C.
Homo-sapiens
D.
Homo sapiens species
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Solution
Homo sapiens is the correct example of binomial nomenclature, where the genus name is capitalized and the species name is in lowercase.
Correct Answer:
A
— Homo sapiens
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Q. Which of the following is a defining characteristic of life? (2019)
A.
Ability to move
B.
Ability to reproduce
C.
Ability to grow
D.
Ability to think
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Solution
The ability to reproduce is a defining characteristic of life, while the others may not apply to all living organisms.
Correct Answer:
B
— Ability to reproduce
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Q. Which of the following is a defining characteristic of the phylum Annelida? (2023)
A.
Body divided into segments
B.
Presence of a shell
C.
Radial symmetry
D.
Jointed appendages
Show solution
Solution
Annelids, such as earthworms, are characterized by their segmented bodies, which is a defining feature of this phylum.
Correct Answer:
A
— Body divided into segments
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Q. Which of the following is a defining feature of the kingdom Animalia? (2022)
A.
Cell walls
B.
Autotrophic nutrition
C.
Multicellular and heterotrophic
D.
Chlorophyll
Show solution
Solution
The kingdom Animalia is defined by multicellular and heterotrophic organisms.
Correct Answer:
C
— Multicellular and heterotrophic
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Q. Which of the following is a defining feature of the phylum Annelida? (2023)
A.
Body divided into segments
B.
Presence of a shell
C.
Radial symmetry
D.
Jointed appendages
Show solution
Solution
Annelids, such as earthworms, are characterized by their segmented bodies.
Correct Answer:
A
— Body divided into segments
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Q. Which of the following is a defining feature of the phylum Mollusca? (2023)
A.
Jointed legs
B.
Soft-bodied with a hard shell
C.
Radial symmetry
D.
Presence of a notochord
Show solution
Solution
Mollusca includes soft-bodied animals, many of which have a hard shell for protection.
Correct Answer:
B
— Soft-bodied with a hard shell
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Q. Which of the following is a defining feature of the phylum Nematoda? (2019)
A.
Segmented body
B.
Presence of a shell
C.
Round body shape
D.
Radial symmetry
Show solution
Solution
Nematodes, or roundworms, are characterized by their cylindrical, elongated body shape.
Correct Answer:
C
— Round body shape
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Q. Which of the following is a density-dependent factor affecting population growth? (2019)
A.
Natural disasters
B.
Food availability
C.
Climate
D.
Habitat destruction
Show solution
Solution
Food availability is a density-dependent factor because its effect on population growth changes with population density.
Correct Answer:
B
— Food availability
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Q. Which of the following is a direct consequence of biodiversity loss? (2023)
A.
Increased food security
B.
Enhanced ecosystem services
C.
Loss of ecosystem resilience
D.
Improved air quality
Show solution
Solution
Loss of biodiversity leads to a loss of ecosystem resilience, making ecosystems more vulnerable to changes.
Correct Answer:
C
— Loss of ecosystem resilience
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Q. Which of the following is a direct threat to biodiversity? (2022)
A.
Climate change
B.
Invasive species
C.
Habitat fragmentation
D.
All of the above
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Solution
All of the above options are direct threats to biodiversity, affecting species and ecosystems.
Correct Answer:
D
— All of the above
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Q. Which of the following is a disadvantage of asexual reproduction? (2022)
A.
Requires less energy
B.
Produces many offspring quickly
C.
Lack of genetic variation
D.
Can occur in isolation
Show solution
Solution
Asexual reproduction lacks genetic variation, which can make populations more vulnerable to diseases and environmental changes.
Correct Answer:
C
— Lack of genetic variation
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Q. Which of the following is a disease caused by a virus? (2021)
A.
Tuberculosis
B.
Malaria
C.
HIV/AIDS
D.
Typhoid
Show solution
Solution
HIV/AIDS is caused by the Human Immunodeficiency Virus (HIV), which is a virus.
Correct Answer:
C
— HIV/AIDS
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Q. Which of the following is a factor affecting the rate of transpiration?
A.
Temperature
B.
Humidity
C.
Wind speed
D.
All of the above
Show solution
Solution
All of these factors influence the rate of transpiration in plants.
Correct Answer:
D
— All of the above
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Q. Which of the following is a feature of algae? (2022)
A.
Presence of true roots
B.
Photosynthetic pigments
C.
Vascular tissues
D.
Seeds
Show solution
Solution
Algae are primarily characterized by their ability to perform photosynthesis using various pigments, but they do not have true roots or vascular tissues.
Correct Answer:
B
— Photosynthetic pigments
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Q. Which of the following is a feature of angiosperms? (2020)
A.
Produce seeds
B.
Have vascular tissues
C.
Produce flowers
D.
All of the above
Show solution
Solution
Angiosperms are characterized by producing seeds, having vascular tissues, and producing flowers.
Correct Answer:
D
— All of the above
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Showing 871 to 900 of 1387 (47 Pages)
Biology (NEET) MCQ & Objective Questions
Biology is a crucial subject for students preparing for the NEET exam, as it covers essential concepts that form the foundation of life sciences. Practicing MCQs and objective questions in Biology not only enhances your understanding but also boosts your confidence during exams. Regular practice with important questions helps in identifying key areas and improves your overall exam preparation.
What You Will Practise Here
Cell Structure and Function
Genetics and Evolution
Human Physiology and Anatomy
Plant Physiology and Morphology
Ecology and Environment
Biotechnology and its Applications
Reproduction and Development in Organisms
Exam Relevance
The topics covered in Biology are integral to various examinations, including CBSE, State Boards, NEET, and JEE. In NEET, Biology constitutes a significant portion of the question paper, often comprising around 50% of the total marks. Common question patterns include multiple-choice questions that test both conceptual understanding and factual knowledge, making it essential to be well-prepared with objective questions.
Common Mistakes Students Make
Confusing similar terms, such as mitosis and meiosis.
Overlooking diagrams and their labels, which are often crucial for answering questions.
Neglecting the application of concepts in real-life scenarios.
Rushing through questions without fully understanding what is being asked.
FAQs
Question: What are the best ways to prepare for Biology (NEET) MCQs?Answer: Regularly practice MCQs, review important concepts, and focus on understanding diagrams and processes.
Question: How can I improve my accuracy in answering objective questions?Answer: Take timed quizzes, analyze your mistakes, and revisit challenging topics to strengthen your grasp.
Start solving practice MCQs today to enhance your understanding and readiness for the NEET exam. Every question you tackle brings you one step closer to your goal!