Chapter 6 of Class 10 Science, Life Processes, focuses on the vital activities essential for sustaining life, such as nutrition, respiration, transportation, and excretion. These topics are crucial for understanding how living organisms function and are frequently tested in exams. To excel, practicing multiple-choice questions (MCQs) is a proven method to strengthen your concepts and improve accuracy. This article provides a comprehensive guide to “Life Processes class 10 mcq with answers. Whether you’re revising for your board exams or enhancing your biology foundation, these MCQs will help you confidently tackle Chapter 6 of the class 10 science book and score high marks.
Life Processes Class 10 MCQ With Answer: Science Chapter 6
- Which of the following is essential for photosynthesis?
a) Oxygen
b) Water
c) Chlorophyll
d) Both b and c
Answer: d) Both b and c
- What is the main product of photosynthesis?
a) Carbon dioxide
b) Glucose
c) Oxygen
d) Water
Answer: b) Glucose
- Where does digestion of proteins begin in humans?
a) Mouth
b) Stomach
c) Small intestine
d) Esophagus
Answer: b) Stomach
- Which enzyme is present in saliva?
a) Pepsin
b) Lipase
c) Amylase
d) Trypsin
Answer: c) Amylase
- Holozoic nutrition is exhibited by:
a) Plants
b) Fungi
c) Humans
d) Bacteria
Answer: c) Humans
- What is the by-product of photosynthesis?
a) Carbon dioxide
b) Oxygen
c) Water
d) Glucose
Answer: b) Oxygen
- Which type of nutrition involves consuming complex organic matter?
a) Autotrophic
b) Saprophytic
c) Holozoic
d) Parasitic
Answer: c) Holozoic
- Which of the following is not a digestive enzyme?
a) Pepsin
b) Amylase
c) Trypsin
d) Chlorophyll
Answer: d) Chlorophyll
- What is the site of aerobic respiration in cells?
a) Ribosome
b) Nucleus
c) Mitochondria
d) Cytoplasm
Answer: c) Mitochondria
- Which gas is released during aerobic respiration?
a) Oxygen
b) Carbon dioxide
c) Nitrogen
d) Hydrogen
Answer: b) Carbon dioxide
- Anaerobic respiration in yeast produces:
a) Alcohol
b) Lactic acid
c) Oxygen
d) ATP only
Answer: a) Alcohol
- In humans, anaerobic respiration occurs during:
a) Relaxation
b) Intense exercise
c) Sleep
d) Digestion
Answer: b) Intense exercise
- How many ATP molecules are produced in aerobic respiration?
a) 2
b) 18
c) 36
d) 6
Answer: c) 36
- The end product of anaerobic respiration in muscles is:
a) Alcohol
b) Carbon dioxide
c) Lactic acid
d) Glucose
Answer: c) Lactic acid
- During respiration, energy is stored in:
a) DNA
b) Proteins
c) ATP
d) Lipids
Answer: c) ATP
- Which blood vessel carries deoxygenated blood to the lungs?
a) Aorta
b) Pulmonary artery
c) Pulmonary vein
d) Superior vena cava
Answer: b) Pulmonary artery
- What prevents the backflow of blood in the heart?
a) Walls
b) Valves
c) Arteries
d) Veins
Answer: b) Valves
- Which tissue transports water in plants?
a) Xylem
b) Phloem
c) Epidermis
d) Cambium
Answer: a) Xylem
- Which part of the heart receives oxygenated blood?
a) Right atrium
b) Left atrium
c) Right ventricle
d) Left ventricle
Answer: b) Left atrium
- What is the function of platelets in the blood?
a) Transport oxygen
b) Fight infections
c) Clot blood
d) Carry hormones
Answer: c) Clot blood
- Which element is essential for the transport of oxygen in blood?
a) Calcium
b) Sodium
c) Iron
d) Magnesium
Answer: c) Iron
- Phloem transports:
a) Water
b) Food
c) Minerals
d) Gases
Answer: b) Food
- What is the major vein that brings deoxygenated blood to the heart?
a) Pulmonary vein
b) Inferior vena cava
c) Aorta
d) Carotid artery
Answer: b) Inferior vena cava
- Which organ is responsible for filtering blood?
a) Liver
b) Kidney
c) Heart
d) Lungs
Answer: b) Kidney
- What is the primary waste product excreted by the human kidneys?
a) Glucose
b) Urea
c) Oxygen
d) Ammonia
Answer: b) Urea
- What is the structural and functional unit of the kidney?
a) Nephron
b) Glomerulus
c) Alveolus
d) Ureter
Answer: a) Nephron
- Which process in plants eliminates water vapor?
a) Transpiration
b) Respiration
c) Photosynthesis
d) Excretion
Answer: a) Transpiration
- Sweat glands help in the excretion of:
a) Water and salts
b) Urea and glucose
c) Hormones
d) Carbon dioxide
Answer: a) Water and salts
- In plants, oxygen is removed through:
a) Stomata
b) Xylem
c) Phloem
d) Roots
Answer: a) Stomata
- Dialysis is used when:
a) Lungs fail
b) Heart stops
c) Kidneys fail
d) Liver stops functioning
Answer: c) Kidneys fail
- Which process in plants removes carbon dioxide?
a) Photosynthesis
b) Respiration
c) Transpiration
d) None of these
Answer: b) Respiration
- Blood transports oxygen with the help of:
a) Hemoglobin
b) Platelets
c) Plasma
d) White blood cells
Answer: a) Hemoglobin
- The energy currency in living cells is called:
a) RNA
b) Glucose
c) ATP
d) DNA
Answer: c) ATP
- Which is a feature of saprophytic nutrition?
a) Consuming other organisms
b) Producing food using sunlight
c) Feeding on decaying matter
d) Depending on a host
Answer: c) Feeding on decaying matter
- The by-product of anaerobic respiration in yeast is:
a) Alcohol
b) Glucose
c) Urea
d) Water
Answer: a) Alcohol
- Which vessel carries oxygenated blood from the lungs to the heart?
a) Pulmonary artery
b) Pulmonary vein
c) Aorta
d) Vena cava
Answer: b) Pulmonary vein
- Which plant tissue is responsible for transporting water and minerals?
a) Phloem
b) Xylem
c) Cambium
d) Epidermis
Answer: b) Xylem
- What is the major excretory organ in humans?
a) Liver
b) Kidney
c) Skin
d) Lungs
Answer: b) Kidney
- What happens to glucose in aerobic respiration?
a) Stored in cells
b) Converted to lactic acid
c) Broken down into carbon dioxide and water
d) Released as heat energy
Answer: c) Broken down into carbon dioxide and water
- What is the main function of stomata in plants?
a) Transport food
b) Remove waste gases
c) Store energy
d) Absorb minerals
Answer: b) Remove waste gases
- Which of the following is an example of parasitic nutrition?
a) Mushroom growing on decaying wood
b) Cuscuta growing on a host plant
c) Human consuming food
d) Green algae making their food
Answer: b) Cuscuta growing on a host plant
- What is the process by which plants prepare food using sunlight?
a) Transpiration
b) Photosynthesis
c) Respiration
d) Excretion
Answer: b) Photosynthesis
- During aerobic respiration, the energy released is stored as:
a) Heat
b) Glucose
c) ATP
d) NADPH
Answer: c) ATP
- In which organelle does the Krebs cycle occur?
a) Ribosome
b) Cytoplasm
c) Mitochondria
d) Nucleus
Answer: c) Mitochondria
- Anaerobic respiration in plants produces:
a) Lactic acid
b) Alcohol and carbon dioxide
c) Water
d) Oxygen
Answer: b) Alcohol and carbon dioxide
- The human heart has how many chambers?
a) Two
b) Four
c) Three
d) Five
Answer: b) Four
- In plants, minerals are transported through:
a) Phloem
b) Xylem
c) Roots only
d) Stomata
Answer: b) Xylem
- Which part of the nephron is responsible for filtration?
a) Loop of Henle
b) Glomerulus
c) Collecting duct
d) Bowman’s capsule
Answer: b) Glomerulus
- What is the primary function of sweat glands?
a) Absorption of salts
b) Regulation of body temperature
c) Production of glucose
d) Oxygen exchange
Answer: b) Regulation of body temperature
- Which of the following life processes occurs in both plants and animals?
a) Photosynthesis
b) Respiration
c) Holozoic nutrition
d) Transpiration
Answer: b) Respiration
Wrapping Up
Mastering the concepts in Chapter 6 of Class 10 Science, Life Processes, is crucial for understanding how living organisms function. Practicing life processes class 10 mcq questions ensures that you not only grasp the theoretical aspects but also build confidence in applying your knowledge during exams. From nutrition to excretion, these MCQs cover all vital topics with detailed answers to reinforce your preparation. Consistent practice will help you improve accuracy, time management, and conceptual clarity, ultimately leading to better results. Use this guide to strengthen your foundation and ace your Class 10 Science exams with confidence.
FAQs for Life Processes Class 10 MCQ
Q1. Why are life processes important to study in Class 10?
Life processes are essential for understanding how living organisms function and form a crucial part of biology and exams.
Q2. How do MCQs help in preparing for Chapter 6 of Class 10 Science?
MCQs improve concept clarity, test application skills, and help practice answering questions quickly and accurately.
Q3. What topics should I focus on for life processes MCQs?
Key topics include nutrition, respiration, transportation, excretion, and diagrams like the human heart and nephron.
Q4. How can I effectively prepare for life processes MCQs?
Revise the concepts thoroughly, practice topic-wise MCQs, and analyze your answers to understand mistakes.
Q5. Are MCQs from this chapter relevant for competitive exams?
Yes, life processes MCQs often appear in competitive exams, making this practice highly beneficial.
