Q. What is the primary function of the phloem in flowering plants? (2023)
A.
Transport of water
B.
Transport of food
C.
Support
D.
Storage
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Solution
Phloem is responsible for the transport of food (sugars) produced during photosynthesis from leaves to other parts of the plant.
Correct Answer:
B
— Transport of food
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Q. What is the primary function of the placenta during pregnancy? (2023)
A.
To provide oxygen and nutrients to the fetus
B.
To produce hormones only
C.
To protect the fetus from all diseases
D.
To facilitate childbirth
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Solution
The placenta provides oxygen and nutrients to the developing fetus and removes waste products.
Correct Answer:
A
— To provide oxygen and nutrients to the fetus
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Q. What is the primary function of the renal pelvis? (2022)
A.
Filtration of blood
B.
Storage of urine
C.
Transport of urine to the bladder
D.
Production of urine
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Solution
The renal pelvis collects urine from the collecting ducts and transports it to the ureter.
Correct Answer:
C
— Transport of urine to the bladder
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Q. What is the primary function of the ribosomes? (2019)
A.
Energy production
B.
Protein synthesis
C.
Lipid synthesis
D.
DNA replication
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Solution
Ribosomes are responsible for protein synthesis by translating messenger RNA into polypeptide chains.
Correct Answer:
B
— Protein synthesis
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Q. What is the primary function of the root system in flowering plants? (2020)
A.
Photosynthesis
B.
Anchorage and absorption of water
C.
Reproduction
D.
Storage of food
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Solution
The primary function of the root system is to anchor the plant and absorb water and nutrients from the soil.
Correct Answer:
B
— Anchorage and absorption of water
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Q. What is the primary function of the rough endoplasmic reticulum? (2019)
A.
Lipid synthesis
B.
Protein synthesis
C.
Energy production
D.
Cell division
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Solution
The rough endoplasmic reticulum is studded with ribosomes and is primarily involved in the synthesis of proteins.
Correct Answer:
B
— Protein synthesis
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Q. What is the primary function of the skeletal system in locomotion? (2019)
A.
A. To produce blood cells
B.
B. To store minerals
C.
C. To provide a framework for muscle attachment
D.
D. To protect internal organs
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Solution
The primary function of the skeletal system in locomotion is to provide a framework for muscle attachment, enabling movement.
Correct Answer:
C
— C. To provide a framework for muscle attachment
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Q. What is the primary function of the skeletal system? (2021)
A.
Movement
B.
Protection of organs
C.
Mineral storage
D.
All of the above
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Solution
The skeletal system serves multiple functions including movement, protection of vital organs, and mineral storage.
Correct Answer:
D
— All of the above
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Q. What is the primary function of the small intestine in digestion? (2020)
A.
Absorption of nutrients
B.
Mechanical digestion
C.
Chemical digestion
D.
Storage of food
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Solution
The primary function of the small intestine is the absorption of nutrients from digested food.
Correct Answer:
A
— Absorption of nutrients
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Q. What is the primary function of the style in a flower? (2023)
A.
Support the anther
B.
Connect stigma to ovary
C.
Attract pollinators
D.
Protect ovules
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Solution
The style connects the stigma to the ovary, allowing pollen to travel to the ovules.
Correct Answer:
B
— Connect stigma to ovary
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Q. What is the primary function of the surfactant in the alveoli? (2019)
A.
Increase surface tension
B.
Decrease surface tension
C.
Facilitate gas exchange
D.
Prevent infection
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Solution
Surfactant reduces surface tension in the alveoli, preventing their collapse and aiding in gas exchange.
Correct Answer:
B
— Decrease surface tension
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Q. What is the primary function of thyroid hormones? (2022)
A.
Regulate metabolism
B.
Control blood pressure
C.
Stimulate growth
D.
Manage stress response
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Solution
Thyroid hormones, primarily thyroxine (T4) and triiodothyronine (T3), are crucial for regulating metabolism in the body.
Correct Answer:
A
— Regulate metabolism
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Q. What is the primary function of white blood cells? (2022)
A.
Transporting oxygen
B.
Clotting blood
C.
Fighting infections
D.
Transporting nutrients
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Solution
White blood cells are part of the immune system and are primarily responsible for fighting infections and foreign invaders.
Correct Answer:
C
— Fighting infections
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Q. What is the primary goal of gene therapy? (2021)
A.
To clone organisms
B.
To replace defective genes
C.
To produce vaccines
D.
To enhance crop traits
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Solution
The primary goal of gene therapy is to replace defective genes in order to treat or prevent diseases.
Correct Answer:
B
— To replace defective genes
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Q. What is the primary goal of sustainable development? (2023)
A.
Maximizing economic growth
B.
Preserving natural resources for future generations
C.
Increasing industrial output
D.
Reducing population growth
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Solution
The primary goal of sustainable development is to meet the needs of the present without compromising the ability of future generations to meet their own needs.
Correct Answer:
B
— Preserving natural resources for future generations
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Q. What is the primary mechanism by which nutrients are transported in phloem?
A.
Diffusion
B.
Bulk flow
C.
Active transport
D.
Osmosis
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Solution
Nutrients in phloem are primarily transported by bulk flow, which is driven by pressure differences.
Correct Answer:
B
— Bulk flow
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Q. What is the primary mechanism of evolution proposed by Charles Darwin?
A.
Natural Selection
B.
Genetic Drift
C.
Mutation
D.
Gene Flow
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Solution
Charles Darwin proposed the mechanism of evolution known as Natural Selection, which explains how species adapt and evolve over time based on environmental pressures.
Correct Answer:
A
— Natural Selection
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Q. What is the primary method of reproduction in bacteria? (2021)
A.
Binary fission
B.
Budding
C.
Fragmentation
D.
Sexual reproduction
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Solution
Bacteria primarily reproduce asexually through binary fission, where a single cell divides into two identical cells.
Correct Answer:
A
— Binary fission
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Q. What is the primary mode of nutrition in the kingdom Animalia? (2023)
A.
Autotrophic
B.
Heterotrophic
C.
Saprophytic
D.
Parasitic
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Solution
The primary mode of nutrition in the kingdom Animalia is heterotrophic.
Correct Answer:
B
— Heterotrophic
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Q. What is the primary mode of nutrition in the kingdom Plantae? (2022)
A.
Heterotrophic
B.
Saprophytic
C.
Autotrophic
D.
Parasitic
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Solution
Plants primarily exhibit autotrophic nutrition through photosynthesis.
Correct Answer:
C
— Autotrophic
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Q. What is the primary mode of reproduction in angiosperms? (2023)
A.
Asexual reproduction
B.
Budding
C.
Fission
D.
Sexual reproduction
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Solution
Angiosperms primarily reproduce through sexual reproduction, involving flowers and seeds.
Correct Answer:
D
— Sexual reproduction
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Q. What is the primary mode of reproduction in ferns? (2023)
A.
Asexual reproduction
B.
Sexual reproduction
C.
Vegetative propagation
D.
Budding
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Solution
Ferns primarily reproduce through sexual reproduction, producing spores.
Correct Answer:
B
— Sexual reproduction
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Q. What is the primary mode of reproduction in unicellular organisms? (2020)
A.
Asexual reproduction
B.
Sexual reproduction
C.
Binary fission
D.
Budding
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Solution
Unicellular organisms primarily reproduce asexually, often through processes like binary fission.
Correct Answer:
A
— Asexual reproduction
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Q. What is the primary muscle involved in the process of breathing? (2021)
A.
Diaphragm
B.
Intercostal muscles
C.
Abdominal muscles
D.
Pectoral muscles
Show solution
Solution
The diaphragm is the primary muscle that contracts and relaxes to facilitate breathing.
Correct Answer:
A
— Diaphragm
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Q. What is the primary pollutant in smog? (2021)
A.
Carbon monoxide
B.
Sulfur dioxide
C.
Nitrogen oxides
D.
Particulate matter
Show solution
Solution
Particulate matter is a primary pollutant in smog, contributing to air quality issues.
Correct Answer:
D
— Particulate matter
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Q. What is the primary process by which energy enters an ecosystem? (2022)
A.
Respiration
B.
Photosynthesis
C.
Decomposition
D.
Transpiration
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Solution
Photosynthesis is the primary process by which energy from sunlight is converted into chemical energy by plants.
Correct Answer:
B
— Photosynthesis
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Q. What is the primary producer in a freshwater ecosystem? (2022)
A.
Fish
B.
Algae
C.
Fungi
D.
Bacteria
Show solution
Solution
Algae are the primary producers in a freshwater ecosystem as they perform photosynthesis.
Correct Answer:
B
— Algae
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Q. What is the primary producer in a terrestrial ecosystem? (2019)
A.
Herbivores
B.
Carnivores
C.
Plants
D.
Decomposers
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Solution
Plants are the primary producers in terrestrial ecosystems as they convert sunlight into energy through photosynthesis.
Correct Answer:
C
— Plants
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Q. What is the primary purpose of petals in a flower? (2023)
A.
To produce seeds
B.
To attract pollinators
C.
To support the flower
D.
To protect the ovary
Show solution
Solution
Petals are often brightly colored and serve to attract pollinators to the flower.
Correct Answer:
B
— To attract pollinators
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Q. What is the primary purpose of reproduction in organisms? (2020)
A.
To increase genetic diversity
B.
To maintain homeostasis
C.
To produce energy
D.
To ensure survival of the species
Show solution
Solution
Reproduction ensures the continuation of a species by producing offspring.
Correct Answer:
D
— To ensure survival of the species
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Showing 361 to 390 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!