Q. Which organ is primarily responsible for filtering blood in the human body?
A.
Liver
B.
Heart
C.
Kidneys
D.
Lungs
Show solution
Solution
The kidneys filter blood to remove waste and excess substances, producing urine.
Correct Answer:
C
— Kidneys
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Q. Which organ is responsible for filtering blood in the human body? (2020)
A.
Liver
B.
Heart
C.
Kidneys
D.
Lungs
Show solution
Solution
The kidneys are responsible for filtering blood, removing waste products and excess substances to form urine.
Correct Answer:
C
— Kidneys
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Q. Which organ is responsible for the production of insulin?
A.
Liver
B.
Pancreas
C.
Kidneys
D.
Stomach
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Solution
The pancreas produces insulin, which helps regulate blood sugar levels in the body.
Correct Answer:
B
— Pancreas
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Q. Which organelle is found only in plant cells and is responsible for photosynthesis?
A.
Mitochondria
B.
Chloroplast
C.
Ribosome
D.
Lysosome
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Solution
Chloroplasts contain chlorophyll and are responsible for converting sunlight into energy through photosynthesis.
Correct Answer:
B
— Chloroplast
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Q. Which organelle is found only in plant cells?
A.
Mitochondria
B.
Chloroplast
C.
Ribosome
D.
Nucleus
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Solution
Chloroplasts are the organelles responsible for photosynthesis and are found only in plant cells.
Correct Answer:
B
— Chloroplast
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Q. Which organelle is involved in the synthesis of ribosomal RNA?
A.
Nucleus
B.
Nucleolus
C.
Rough endoplasmic reticulum
D.
Golgi apparatus
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Solution
The nucleolus is responsible for synthesizing ribosomal RNA (rRNA) and assembling ribosomes.
Correct Answer:
B
— Nucleolus
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Q. Which organelle is responsible for energy production in the cell?
A.
Nucleus
B.
Ribosome
C.
Mitochondria
D.
Endoplasmic Reticulum
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Solution
Mitochondria are known as the powerhouse of the cell, where ATP is produced through cellular respiration.
Correct Answer:
C
— Mitochondria
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Q. Which organelle is responsible for producing ATP?
A.
Nucleus
B.
Ribosome
C.
Mitochondria
D.
Endoplasmic Reticulum
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Solution
Mitochondria are known as the powerhouse of the cell, where ATP is produced through cellular respiration.
Correct Answer:
C
— Mitochondria
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Q. Which part of the brain is responsible for regulating heart rate and breathing?
A.
Cerebrum
B.
Cerebellum
C.
Medulla oblongata
D.
Thalamus
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Solution
The medulla oblongata controls autonomic functions such as heart rate and breathing.
Correct Answer:
C
— Medulla oblongata
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Q. Which part of the brain is responsible for regulating heart rate?
A.
Cerebrum
B.
Cerebellum
C.
Medulla oblongata
D.
Thalamus
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Solution
The medulla oblongata controls autonomic functions, including heart rate and breathing.
Correct Answer:
C
— Medulla oblongata
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Q. Which part of the cell is responsible for packaging and modifying proteins?
A.
Golgi apparatus
B.
Lysosome
C.
Nucleus
D.
Mitochondria
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Solution
The Golgi apparatus modifies, sorts, and packages proteins for secretion or delivery to other organelles.
Correct Answer:
A
— Golgi apparatus
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Q. Which part of the nervous system controls involuntary actions?
A.
Central nervous system
B.
Peripheral nervous system
C.
Autonomic nervous system
D.
Somatic nervous system
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Solution
The autonomic nervous system controls involuntary actions such as heart rate, digestion, and respiratory rate.
Correct Answer:
C
— Autonomic nervous system
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Q. Which part of the plant is primarily responsible for nutrient absorption?
A.
Leaves
B.
Stems
C.
Roots
D.
Flowers
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Solution
Roots are the primary organs for nutrient and water absorption from the soil, anchoring the plant and providing stability.
Correct Answer:
C
— Roots
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Q. Which part of the plant is primarily responsible for the uptake of water and minerals? (2020)
A.
Leaves
B.
Stems
C.
Roots
D.
Flowers
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Solution
Roots are specialized for absorbing water and nutrients from the soil, making them crucial for plant growth.
Correct Answer:
C
— Roots
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Q. Which pigment is primarily responsible for photosynthesis in plants?
A.
Chlorophyll a
B.
Carotenoids
C.
Xanthophylls
D.
Anthocyanins
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Solution
Chlorophyll a is the main pigment involved in photosynthesis, absorbing light energy to convert carbon dioxide and water into glucose and oxygen.
Correct Answer:
A
— Chlorophyll a
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Q. Which pigment is primarily responsible for the absorption of light in photosynthesis?
A.
Chlorophyll a
B.
Carotenoids
C.
Xanthophylls
D.
Chlorophyll b
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Solution
Chlorophyll a is the main pigment involved in photosynthesis, absorbing light primarily in the blue and red wavelengths.
Correct Answer:
A
— Chlorophyll a
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Q. Which pigment is primarily responsible for the green color of plants?
A.
Carotenoids
B.
Chlorophyll
C.
Xanthophyll
D.
Anthocyanins
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Solution
Chlorophyll is the pigment that gives plants their green color and is essential for photosynthesis, allowing plants to absorb light energy.
Correct Answer:
B
— Chlorophyll
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Q. Which pigment is responsible for the red color in plants? (2021)
A.
Chlorophyll
B.
Carotenoids
C.
Anthocyanins
D.
Xanthophylls
Show solution
Solution
Anthocyanins are pigments that give red, purple, and blue colors to many plants.
Correct Answer:
C
— Anthocyanins
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Q. Which pigment is responsible for the red color in some plants? (2019)
A.
Chlorophyll
B.
Carotenoids
C.
Anthocyanins
D.
Xanthophylls
Show solution
Solution
Anthocyanins are pigments that give red, purple, and blue colors to many plants, especially in fruits and flowers.
Correct Answer:
C
— Anthocyanins
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Q. Which process describes the movement of water from the roots to the leaves of a plant?
A.
Translocation
B.
Transpiration
C.
Absorption
D.
Capillarity
Show solution
Solution
Translocation refers to the movement of water and nutrients through the plant, specifically from the roots to the leaves.
Correct Answer:
A
— Translocation
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Q. Which process describes the movement of water from the roots to the leaves?
A.
Translocation
B.
Transpiration
C.
Absorption
D.
Capillarity
Show solution
Solution
Translocation refers to the movement of water and nutrients through the plant, specifically from the roots to the leaves.
Correct Answer:
A
— Translocation
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Q. Which process do plants use to convert sunlight into chemical energy? (2019)
A.
Respiration
B.
Photosynthesis
C.
Fermentation
D.
Transpiration
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Solution
Photosynthesis is the process by which plants convert sunlight into chemical energy stored in glucose.
Correct Answer:
B
— Photosynthesis
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Q. Which process involves the conversion of light energy into chemical energy?
A.
Respiration
B.
Transpiration
C.
Photosynthesis
D.
Fermentation
Show solution
Solution
Photosynthesis is the process by which plants convert light energy into chemical energy stored in glucose.
Correct Answer:
C
— Photosynthesis
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Q. Which process involves the movement of water across a semipermeable membrane?
A.
Diffusion
B.
Osmosis
C.
Active transport
D.
Facilitated diffusion
Show solution
Solution
Osmosis is the process of water movement across a semipermeable membrane from an area of lower solute concentration to an area of higher solute concentration.
Correct Answer:
B
— Osmosis
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Q. Which process involves the movement of water from the roots to the leaves of a plant?
A.
Transpiration
B.
Photosynthesis
C.
Glycolysis
D.
Respiration
Show solution
Solution
Transpiration is the process where water is absorbed by plant roots and moves through the plant to evaporate from the leaves.
Correct Answer:
A
— Transpiration
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Q. Which process involves the movement of water from the roots to the leaves?
A.
Transpiration
B.
Photosynthesis
C.
Respiration
D.
Germination
Show solution
Solution
Transpiration is the process through which water is absorbed by plant roots and then evaporated from the leaves, creating a continuous flow of water.
Correct Answer:
A
— Transpiration
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Q. Which structure is found in plant cells but not in animal cells?
A.
Cell membrane
B.
Mitochondria
C.
Chloroplasts
D.
Ribosomes
Show solution
Solution
Chloroplasts are found in plant cells and are responsible for photosynthesis, while animal cells do not have them.
Correct Answer:
C
— Chloroplasts
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Q. Which structure is found only in plant cells?
A.
Mitochondria
B.
Chloroplast
C.
Nucleus
D.
Ribosome
Show solution
Solution
Chloroplasts are the organelles responsible for photosynthesis and are found only in plant cells.
Correct Answer:
B
— Chloroplast
Learn More →
Q. Which structure is involved in the modification and packaging of proteins?
A.
Nucleus
B.
Golgi apparatus
C.
Ribosome
D.
Endoplasmic Reticulum
Show solution
Solution
The Golgi apparatus modifies, sorts, and packages proteins for secretion or use within the cell.
Correct Answer:
B
— Golgi apparatus
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Q. Which system is primarily responsible for hormone production? (2021)
A.
Nervous system
B.
Endocrine system
C.
Respiratory system
D.
Muscular system
Show solution
Solution
The endocrine system is primarily responsible for hormone production and regulation in the body.
Correct Answer:
B
— Endocrine system
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Showing 211 to 240 of 251 (9 Pages)
Biology MCQ & Objective Questions
Biology is a crucial subject for students preparing for school exams and competitive tests in India. Understanding biological concepts not only helps in grasping the fundamentals of life sciences but also enhances your ability to tackle objective questions effectively. Practicing MCQs and objective questions in Biology is essential for scoring better, as it allows you to apply your knowledge and identify important questions that frequently appear in exams.
What You Will Practise Here
Cell Structure and Function
Genetics and Heredity
Human Anatomy and Physiology
Plant Biology and Ecology
Microbiology and Biotechnology
Evolution and Biodiversity
Important definitions and key formulas
Exam Relevance
Biology is a significant part of the curriculum for CBSE, State Boards, NEET, and JEE. In these exams, you can expect a variety of question patterns, including multiple-choice questions that test your understanding of key concepts, definitions, and applications of biological theories. Familiarity with important Biology MCQ questions will give you an edge in both school assessments and competitive exams.
Common Mistakes Students Make
Confusing similar terms, such as mitosis and meiosis.
Overlooking the importance of diagrams in understanding processes.
Misinterpreting questions that require application of concepts rather than rote memorization.
Neglecting to review key definitions and their implications.
FAQs
Question: What are the best ways to prepare for Biology MCQs?Answer: Regular practice with objective questions, reviewing key concepts, and understanding diagrams are effective strategies.
Question: How can I improve my accuracy in answering Biology objective questions?Answer: Focus on understanding concepts rather than memorizing facts, and practice with past exam papers to familiarize yourself with question patterns.
Start solving practice MCQs today to test your understanding and boost your confidence in Biology. Remember, consistent practice is the key to mastering this subject and achieving your exam goals!