Life Processes Practice Questions
Class 10 · Science · 3349 free MCQs with instant results and detailed explanations.
3349
Total
1055
Easy
1633
Medium
661
Hard
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Topics in Life Processes
Transportation
758
Excretion
732
Nutrition
1021
Respiration
838
Sample Questions from Life Processes
Here are 10 sample questions. Start a quiz to get randomized questions with scoring.
Q1
Easy
Which process do plants use to convert sunlight into energy?
A.
Photosynthesis
B.
Respiration
C.
Transpiration
D.
Digestion
Show Answer & Explanation
Correct Answer: A
Photosynthesis is the process where plants use sunlight, carbon dioxide, and water to produce glucose and oxygen, serving as their energy source.
Q2
Easy
What is the primary source of energy for herbivores?
A.
Meat
B.
Plants
C.
Fungi
D.
Bacteria
Show Answer & Explanation
Correct Answer: B
Herbivores primarily consume plants, which provide them with the necessary nutrients and energy.
Q3
Easy
Which vitamin is essential for maintaining good vision?
A.
Vitamin A
B.
Vitamin B
C.
Vitamin C
D.
Vitamin D
Show Answer & Explanation
Correct Answer: A
Vitamin A is crucial for maintaining healthy vision, especially in low light, as it is a component of rhodopsin in the retina.
Q4
Medium
Which of the following nutrients is primarily responsible for providing energy to the human body?
A.
Carbohydrates
B.
Proteins
C.
Vitamins
D.
Minerals
Show Answer & Explanation
Correct Answer: A
Carbohydrates are the main source of energy for the body, as they are broken down into glucose, which fuels cellular activities.
Q5
Medium
In the process of photosynthesis, which of the following is NOT a product?
A.
Oxygen
B.
Glucose
C.
Carbon Dioxide
D.
Water
Show Answer & Explanation
Correct Answer: C
Carbon dioxide is a reactant in photosynthesis, not a product. The products are glucose and oxygen.
Q6
Medium
What is the main function of the small intestine in the digestive system?
A.
Absorption of nutrients
B.
Storage of food
C.
Production of bile
D.
Mechanical breakdown of food
Show Answer & Explanation
Correct Answer: A
The small intestine is primarily responsible for the absorption of nutrients into the bloodstream after digestion.
Q7
Medium
Which of the following is a characteristic of a balanced diet?
A.
High in carbohydrates only
B.
Contains all essential nutrients in appropriate amounts
C.
Excludes fats completely
D.
Rich in sugars
Show Answer & Explanation
Correct Answer: B
A balanced diet includes a variety of foods that provide all essential nutrients needed for health in correct proportions.
Q8
Hard
Which of the following statements best describes the term 'autotrophic nutrition'?
A.
Organisms produce their own food using light energy.
B.
Organisms obtain food by consuming other organisms.
C.
Organisms absorb nutrients directly from their environment.
D.
Organisms rely solely on inorganic compounds for nutrition.
Show Answer & Explanation
Correct Answer: A
Autotrophic nutrition involves organisms like plants that produce their own food using photosynthesis, primarily using sunlight.
Q9
Hard
During photosynthesis, which of the following is NOT a product formed?
A.
Glucose
B.
Oxygen
C.
Carbon dioxide
D.
Water
Show Answer & Explanation
Correct Answer: C
Carbon dioxide is a reactant in photosynthesis, not a product. The products are glucose and oxygen.
Q10
Hard
Which of the following vitamins is crucial for the synthesis of collagen?
A.
Vitamin A
B.
Vitamin C
C.
Vitamin D
D.
Vitamin E
Show Answer & Explanation
Correct Answer: B
Vitamin C is essential for collagen synthesis, playing a vital role in skin and connective tissue health.
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Life Processes — Class 10 Science Practice Questions Online
This page contains 3349 practice MCQs for the chapter Life Processes in Class 10 Science. The questions are organized by difficulty — 1055 easy, 1633 medium, 661 hard — so you can choose the right level for your preparation.
Every question includes a detailed explanation to help you understand the concept, not just memorize answers. Take a timed quiz to simulate exam conditions, or practice at your own pace with no time limit. This chapter covers 4 topics, giving you comprehensive coverage of the entire chapter.