1 Mark Questions for Class 10 Science Life Processes. Try first, then reveal the answer. These are exam-oriented practice items, not copied board papers.
Practice questions aligned to NCERT topics used in CBSE classrooms. These are original exam-oriented questions for revision — not official CBSE board papers and not a guarantee of any exam question. Always match the textbook issued by your school and the latest PDFs on ncert.nic.in and cbseacademic.nic.in.
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Practice set
Q1MCQ1 markEasyRevision pick
Choose the correct statement related to Photosynthesis in the chapter Life Processes.
A. The nephron is the structural and functional unit of the kidney
B. Green plants make food from carbon dioxide and water in sunlight using chlorophyll, releasing oxygen
C. Autotrophic nutrition: photosynthesis
D. The human heart has four chambers and keeps oxygenated and deoxygenated blood from mixing in a healthy heart
Answer
B. Green plants make food from carbon dioxide and water in sunlight using chlorophyll, releasing oxygen
Explanation
Green plants make food from carbon dioxide and water in sunlight using chlorophyll, releasing oxygen. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 10 · Subject: Science · Chapter: Life Processes · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q2MCQ1 markEasy
Choose the correct statement related to Aerobic respiration in the chapter Life Processes.
A. Alveoli provide a large surface for exchange of oxygen and carbon dioxide
B. Aerobic respiration releases more energy than anaerobic
C. Xylem transports water and minerals from roots to other parts of the plant
D. Aerobic respiration uses oxygen and releases much more energy than anaerobic respiration
Answer
D. Aerobic respiration uses oxygen and releases much more energy than anaerobic respiration
Explanation
Aerobic respiration uses oxygen and releases much more energy than anaerobic respiration. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 10 · Subject: Science · Chapter: Life Processes · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q3MCQ1 markEasy
Choose the correct statement related to Human heart in the chapter Life Processes.
A. Peristalsis is the wave-like movement of the alimentary canal that pushes food
B. The human heart has four chambers and keeps oxygenated and deoxygenated blood from mixing in a healthy heart
C. Phloem transports food from leaves to other parts of the plant
D. Human heart: four chambers
Answer
B. The human heart has four chambers and keeps oxygenated and deoxygenated blood from mixing in a healthy heart
Explanation
The human heart has four chambers and keeps oxygenated and deoxygenated blood from mixing in a healthy heart. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 10 · Subject: Science · Chapter: Life Processes · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q4MCQ1 markEasy
Choose the correct statement related to Xylem in the chapter Life Processes.
A. Xylem transports water and minerals from roots to other parts of the plant
B. The nephron is the structural and functional unit of the kidney
C. Xylem water; phloem food
D. Autotrophic nutrition: photosynthesis
Answer
A. Xylem transports water and minerals from roots to other parts of the plant
Explanation
Xylem transports water and minerals from roots to other parts of the plant. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 10 · Subject: Science · Chapter: Life Processes · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q5MCQ1 markModerateRevision pick
Choose the correct statement related to Phloem in the chapter Life Processes.
A. Phloem transports food from leaves to other parts of the plant
B. Nephron is the unit of kidney
C. Alveoli provide a large surface for exchange of oxygen and carbon dioxide
D. Aerobic respiration releases more energy than anaerobic
Answer
A. Phloem transports food from leaves to other parts of the plant
Explanation
Phloem transports food from leaves to other parts of the plant. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 10 · Subject: Science · Chapter: Life Processes · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q6MCQ1 markEasy
Choose the correct statement related to Nephron in the chapter Life Processes.
A. Peristalsis is the wave-like movement of the alimentary canal that pushes food
B. The nephron is the structural and functional unit of the kidney
C. Human heart: four chambers
D. This idea is not part of the NCERT chapter
Answer
B. The nephron is the structural and functional unit of the kidney
Explanation
The nephron is the structural and functional unit of the kidney. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 10 · Subject: Science · Chapter: Life Processes · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q7MCQ1 markEasy
Choose the correct statement related to Alveoli in the chapter Life Processes.
A. The textbook says the opposite of this statement
B. Xylem water; phloem food
C. Alveoli provide a large surface for exchange of oxygen and carbon dioxide
D. Autotrophic nutrition: photosynthesis
Answer
C. Alveoli provide a large surface for exchange of oxygen and carbon dioxide
Explanation
Alveoli provide a large surface for exchange of oxygen and carbon dioxide. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 10 · Subject: Science · Chapter: Life Processes · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q8MCQ1 markEasy
Choose the correct statement related to Peristalsis in the chapter Life Processes.
A. This happens only in a laboratory and never in daily life
B. Aerobic respiration releases more energy than anaerobic
C. Nephron is the unit of kidney
D. Peristalsis is the wave-like movement of the alimentary canal that pushes food
Answer
D. Peristalsis is the wave-like movement of the alimentary canal that pushes food
Explanation
Peristalsis is the wave-like movement of the alimentary canal that pushes food. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 10 · Subject: Science · Chapter: Life Processes · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q9MCQ1 markEasyRevision pick
Choose the correct statement related to Autotrophic nutrition in the chapter Life Processes.
A. Autotrophic nutrition: photosynthesis
B. This idea is not part of the NCERT chapter
C. Green plants make food from carbon dioxide and water in sunlight using chlorophyll, releasing oxygen
D. Human heart: four chambers
Answer
A. Autotrophic nutrition: photosynthesis
Explanation
Autotrophic nutrition: photosynthesis. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 10 · Subject: Science · Chapter: Life Processes · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q10MCQ1 markModerate
Choose the correct statement related to Life Processes in the chapter Life Processes.
A. The textbook says the opposite of this statement
B. Aerobic respiration releases more energy than anaerobic
C. Aerobic respiration uses oxygen and releases much more energy than anaerobic respiration
D. Xylem water; phloem food
Answer
B. Aerobic respiration releases more energy than anaerobic
Explanation
Aerobic respiration releases more energy than anaerobic. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 10 · Subject: Science · Chapter: Life Processes · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q11MCQ1 markEasy
Choose the correct statement related to Human heart in the chapter Life Processes.
A. The human heart has four chambers and keeps oxygenated and deoxygenated blood from mixing in a healthy heart
B. Human heart: four chambers
C. This happens only in a laboratory and never in daily life
D. Nephron is the unit of kidney
Answer
B. Human heart: four chambers
Explanation
Human heart: four chambers. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 10 · Subject: Science · Chapter: Life Processes · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q12MCQ1 markEasy
Choose the correct statement related to Life Processes in the chapter Life Processes.
A. Green plants make food from carbon dioxide and water in sunlight using chlorophyll, releasing oxygen
B. This idea is not part of the NCERT chapter
C. Xylem water; phloem food
D. Xylem transports water and minerals from roots to other parts of the plant
Answer
C. Xylem water; phloem food
Explanation
Xylem water; phloem food. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 10 · Subject: Science · Chapter: Life Processes · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q13MCQ1 markEasyRevision pick
Choose the correct statement related to Life Processes in the chapter Life Processes.
A. Nephron is the unit of kidney
B. The textbook says the opposite of this statement
C. Aerobic respiration uses oxygen and releases much more energy than anaerobic respiration
D. Phloem transports food from leaves to other parts of the plant
Answer
A. Nephron is the unit of kidney
Explanation
Nephron is the unit of kidney. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 10 · Subject: Science · Chapter: Life Processes · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q14MCQ1 markEasy
Choose the correct statement related to Photosynthesis in the chapter Life Processes.
A. Alveoli provide a large surface for exchange of oxygen and carbon dioxide
B. Green plants make food from carbon dioxide and water in sunlight using chlorophyll, releasing oxygen
C. Xylem transports water and minerals from roots to other parts of the plant
D. This happens only in a laboratory and never in daily life
Answer
B. Green plants make food from carbon dioxide and water in sunlight using chlorophyll, releasing oxygen
Explanation
Green plants make food from carbon dioxide and water in sunlight using chlorophyll, releasing oxygen. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 10 · Subject: Science · Chapter: Life Processes · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q15MCQ1 markModerate
Choose the correct statement related to Aerobic respiration in the chapter Life Processes.
A. Green plants make food from carbon dioxide and water in sunlight using chlorophyll, releasing oxygen
B. Peristalsis is the wave-like movement of the alimentary canal that pushes food
C. Phloem transports food from leaves to other parts of the plant
D. Aerobic respiration uses oxygen and releases much more energy than anaerobic respiration
Answer
D. Aerobic respiration uses oxygen and releases much more energy than anaerobic respiration
Explanation
Aerobic respiration uses oxygen and releases much more energy than anaerobic respiration. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 10 · Subject: Science · Chapter: Life Processes · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q16MCQ1 markEasy
Choose the correct statement related to Human heart in the chapter Life Processes.
A. The nephron is the structural and functional unit of the kidney
B. Autotrophic nutrition: photosynthesis
C. Aerobic respiration uses oxygen and releases much more energy than anaerobic respiration
D. The human heart has four chambers and keeps oxygenated and deoxygenated blood from mixing in a healthy heart
Answer
D. The human heart has four chambers and keeps oxygenated and deoxygenated blood from mixing in a healthy heart
Explanation
The human heart has four chambers and keeps oxygenated and deoxygenated blood from mixing in a healthy heart. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 10 · Subject: Science · Chapter: Life Processes · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q17MCQ1 markEasyRevision pick
Choose the correct statement related to Xylem in the chapter Life Processes.
A. Xylem transports water and minerals from roots to other parts of the plant
B. Alveoli provide a large surface for exchange of oxygen and carbon dioxide
C. Aerobic respiration releases more energy than anaerobic
D. The human heart has four chambers and keeps oxygenated and deoxygenated blood from mixing in a healthy heart
Answer
A. Xylem transports water and minerals from roots to other parts of the plant
Explanation
Xylem transports water and minerals from roots to other parts of the plant. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 10 · Subject: Science · Chapter: Life Processes · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q18MCQ1 markEasy
Choose the correct statement related to Phloem in the chapter Life Processes.
A. Phloem transports food from leaves to other parts of the plant
B. Peristalsis is the wave-like movement of the alimentary canal that pushes food
C. Xylem transports water and minerals from roots to other parts of the plant
D. Human heart: four chambers
Answer
A. Phloem transports food from leaves to other parts of the plant
Explanation
Phloem transports food from leaves to other parts of the plant. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 10 · Subject: Science · Chapter: Life Processes · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q19MCQ1 markEasy
Choose the correct statement related to Nephron in the chapter Life Processes.
A. Phloem transports food from leaves to other parts of the plant
B. Autotrophic nutrition: photosynthesis
C. Xylem water; phloem food
D. The nephron is the structural and functional unit of the kidney
Answer
D. The nephron is the structural and functional unit of the kidney
Explanation
The nephron is the structural and functional unit of the kidney. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 10 · Subject: Science · Chapter: Life Processes · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q20MCQ1 markModerate
Choose the correct statement related to Alveoli in the chapter Life Processes.
A. The nephron is the structural and functional unit of the kidney
B. Alveoli provide a large surface for exchange of oxygen and carbon dioxide
C. Nephron is the unit of kidney
D. Aerobic respiration releases more energy than anaerobic
Answer
B. Alveoli provide a large surface for exchange of oxygen and carbon dioxide
Explanation
Alveoli provide a large surface for exchange of oxygen and carbon dioxide. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 10 · Subject: Science · Chapter: Life Processes · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q211 Mark1 markEasy
Define or state: Peristalsis.
Answer
Peristalsis is the wave-like movement of the alimentary canal that pushes food.
Explanation
A one-mark answer should use the textbook term and one clear fact — not a long paragraph.
Meta
Class: Class 10 · Subject: Science · Chapter: Life Processes · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q221 Mark1 markEasy
Define or state: Autotrophic nutrition.
Answer
Autotrophic nutrition: photosynthesis.
Explanation
A one-mark answer should use the textbook term and one clear fact — not a long paragraph.
Meta
Class: Class 10 · Subject: Science · Chapter: Life Processes · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q231 Mark1 markEasy
Define or state: Life Processes.
Answer
Aerobic respiration releases more energy than anaerobic.
Explanation
A one-mark answer should use the textbook term and one clear fact — not a long paragraph.
Meta
Class: Class 10 · Subject: Science · Chapter: Life Processes · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q241 Mark1 markEasy
Define or state: Human heart.
Answer
Human heart: four chambers.
Explanation
A one-mark answer should use the textbook term and one clear fact — not a long paragraph.
Meta
Class: Class 10 · Subject: Science · Chapter: Life Processes · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q251 Mark1 markModerate
Define or state: Life Processes.
Answer
Xylem water; phloem food.
Explanation
A one-mark answer should use the textbook term and one clear fact — not a long paragraph.
Meta
Class: Class 10 · Subject: Science · Chapter: Life Processes · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q261 Mark1 markEasy
Define or state: Life Processes.
Answer
Nephron is the unit of kidney.
Explanation
A one-mark answer should use the textbook term and one clear fact — not a long paragraph.
Meta
Class: Class 10 · Subject: Science · Chapter: Life Processes · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q271 Mark1 markEasy
Define or state: Photosynthesis.
Answer
Green plants make food from carbon dioxide and water in sunlight using chlorophyll, releasing oxygen.
Explanation
A one-mark answer should use the textbook term and one clear fact — not a long paragraph.
Meta
Class: Class 10 · Subject: Science · Chapter: Life Processes · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q281 Mark1 markEasy
Define or state: Aerobic respiration.
Answer
Aerobic respiration uses oxygen and releases much more energy than anaerobic respiration.
Explanation
A one-mark answer should use the textbook term and one clear fact — not a long paragraph.
Meta
Class: Class 10 · Subject: Science · Chapter: Life Processes · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q291 Mark1 markEasy
Define or state: Human heart.
Answer
The human heart has four chambers and keeps oxygenated and deoxygenated blood from mixing in a healthy heart.
Explanation
A one-mark answer should use the textbook term and one clear fact — not a long paragraph.
Meta
Class: Class 10 · Subject: Science · Chapter: Life Processes · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q301 Mark1 markModerate
Define or state: Xylem.
Answer
Xylem transports water and minerals from roots to other parts of the plant.
Explanation
A one-mark answer should use the textbook term and one clear fact — not a long paragraph.
Meta
Class: Class 10 · Subject: Science · Chapter: Life Processes · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q61Assertion and Reason1 markModerate
Assertion (A): Autotrophic nutrition: photosynthesis.
Reason (R): Autotrophic nutrition is a key idea in the chapter Life Processes.
Choose the correct option.
A. Both A and R are true, and R is the correct explanation of A.
B. Both A and R are true, and R is not the correct explanation of A.
C. A is true but R is false.
D. A is false but R is true.
Answer
A. Both A and R are true, and R is the correct explanation of A.
Explanation
Read Assertion and Reason separately first. Here both match the textbook idea, and R explains why A is taught in this chapter.
Meta
Class: Class 10 · Subject: Science · Chapter: Life Processes · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q62Assertion and Reason1 markModerate
Assertion (A): Aerobic respiration releases more energy than anaerobic.
Reason (R): Life Processes is a key idea in the chapter Life Processes.
Choose the correct option.
A. Both A and R are true, and R is the correct explanation of A.
B. Both A and R are true, and R is not the correct explanation of A.
C. A is true but R is false.
D. A is false but R is true.
Answer
A. Both A and R are true, and R is the correct explanation of A.
Explanation
Read Assertion and Reason separately first. Here both match the textbook idea, and R explains why A is taught in this chapter.
Meta
Class: Class 10 · Subject: Science · Chapter: Life Processes · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q63Assertion and Reason1 markModerate
Assertion (A): Human heart: four chambers.
Reason (R): Human heart is a key idea in the chapter Life Processes.
Choose the correct option.
A. Both A and R are true, and R is the correct explanation of A.
B. Both A and R are true, and R is not the correct explanation of A.
C. A is true but R is false.
D. A is false but R is true.
Answer
A. Both A and R are true, and R is the correct explanation of A.
Explanation
Read Assertion and Reason separately first. Here both match the textbook idea, and R explains why A is taught in this chapter.
Meta
Class: Class 10 · Subject: Science · Chapter: Life Processes · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q64Assertion and Reason1 markDifficult
Assertion (A): Xylem water; phloem food.
Reason (R): Life Processes is a key idea in the chapter Life Processes.
Choose the correct option.
A. Both A and R are true, and R is the correct explanation of A.
B. Both A and R are true, and R is not the correct explanation of A.
C. A is true but R is false.
D. A is false but R is true.
Answer
A. Both A and R are true, and R is the correct explanation of A.
Explanation
Read Assertion and Reason separately first. Here both match the textbook idea, and R explains why A is taught in this chapter.
Meta
Class: Class 10 · Subject: Science · Chapter: Life Processes · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q65Assertion and Reason1 markModerate
Assertion (A): Nephron is the unit of kidney.
Reason (R): Life Processes is a key idea in the chapter Life Processes.
Choose the correct option.
A. Both A and R are true, and R is the correct explanation of A.
B. Both A and R are true, and R is not the correct explanation of A.
C. A is true but R is false.
D. A is false but R is true.
Answer
A. Both A and R are true, and R is the correct explanation of A.
Explanation
Read Assertion and Reason separately first. Here both match the textbook idea, and R explains why A is taught in this chapter.
Meta
Class: Class 10 · Subject: Science · Chapter: Life Processes · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q66Assertion and Reason1 markModerate
Assertion (A): Green plants make food from carbon dioxide and water in sunlight using chlorophyll, releasing oxygen.
Reason (R): Photosynthesis is a key idea in the chapter Life Processes.
Choose the correct option.
A. Both A and R are true, and R is the correct explanation of A.
B. Both A and R are true, and R is not the correct explanation of A.
C. A is true but R is false.
D. A is false but R is true.
Answer
A. Both A and R are true, and R is the correct explanation of A.
Explanation
Read Assertion and Reason separately first. Here both match the textbook idea, and R explains why A is taught in this chapter.
Meta
Class: Class 10 · Subject: Science · Chapter: Life Processes · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q67Assertion and Reason1 markModerate
Assertion (A): Aerobic respiration uses oxygen and releases much more energy than anaerobic respiration.
Reason (R): Aerobic respiration is a key idea in the chapter Life Processes.
Choose the correct option.
A. Both A and R are true, and R is the correct explanation of A.
B. Both A and R are true, and R is not the correct explanation of A.
C. A is true but R is false.
D. A is false but R is true.
Answer
A. Both A and R are true, and R is the correct explanation of A.
Explanation
Read Assertion and Reason separately first. Here both match the textbook idea, and R explains why A is taught in this chapter.
Meta
Class: Class 10 · Subject: Science · Chapter: Life Processes · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q68Assertion and Reason1 markDifficult
Assertion (A): The human heart has four chambers and keeps oxygenated and deoxygenated blood from mixing in a healthy heart.
Reason (R): Human heart is a key idea in the chapter Life Processes.
Choose the correct option.
A. Both A and R are true, and R is the correct explanation of A.
B. Both A and R are true, and R is not the correct explanation of A.
C. A is true but R is false.
D. A is false but R is true.
Answer
A. Both A and R are true, and R is the correct explanation of A.
Explanation
Read Assertion and Reason separately first. Here both match the textbook idea, and R explains why A is taught in this chapter.
Meta
Class: Class 10 · Subject: Science · Chapter: Life Processes · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
FAQs
Are these official CBSE board questions?
No. They are original practice questions aligned to NCERT topics used in CBSE classrooms. Official sample papers are published on cbseacademic.nic.in.
Will these questions appear in the board exam?
Nobody can promise a question. Use them for revision of frequently tested concepts and exam-style practice.
Is the chapter list the latest NCERT list?
Yes, the catalog follows current NCERT textbooks used in CBSE schools (including new middle-stage books such as Ganita Prakash and Curiosity). Always match the book issued by your school.
How should I use the 100 questions?
Try the question first, then tap Show answer. Mix MCQs with long answers. Revise formulas and diagrams from the textbook alongside this set.
Where are NCERT solutions?
Open the NCERT-style practice link on this subject or chapter. For word-for-word textbook exercise answers, use the NCERT book itself; we do not copy solution keys from other websites.
What is the suggested URL pattern?
Hub /cbse/, then /cbse/class-10/, then subject and chapter slugs.
Why is this a separate URL?
So students searching for “1 Mark Questions” land on a filtered set, while the chapter page remains the full 100-question bank. Same facts, different search intent.
Today's 3-step path
Follow this loop every day: mixed test, current affairs, then today's subject. A new set arrives tomorrow.
