Life Processes Class 10 MCQ Quiz – Test Your Knowledge!

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Are you preparing for CBSE Class 10 Science Chapter 6 - Life Processes? This interactive MCQ quiz will help you revise important concepts, key definitions, and exam-focused questions in an engaging way!

About the Quiz

Chapter Name: Life Processes
Subject: Class 10 Science (Biology)
Question Type: Multiple Choice Questions (MCQs)
Difficulty Level: Concept-Based & Exam-Oriented
Leaderboard: Yes (Check Your Rank!)

Why Take This Quiz?

✔ Covers all major topics like nutrition, respiration, transportation, and excretion
✔ Includes competency-based & high-order thinking (HOTs) questions
✔ Ideal for quick revision before CBSE board exams

Click Below to Start the Quiz!

Chapter 5 - Life Processes

1 / 15

Assertion (A): Capillaries have walls that are just one cell thick.

Reason (R): The exchange of material between the blood and surrounding cells takes place across the capillaries.

A is true but R is false

A is false but R is true

Both A and R are true and R is the correct explanation of A

Both A and R are true and R is not the correct explanation of A

2 / 15

The figure shown below represents an activity to prove the requirements for photosynthesis. During this activity, two healthy potted plants were kept in the dark for 72 hours. After 72 hours, KOH is kept in the watch glass in setup X and not in setup Y. Both these setups are airtight and have been kept in light for 6 hours. Then, the Iodine test is performed with one leaf from each of the two plants X and Y.

experiment to prove that carbon dioxide is necessary for photosynthesis

Which of the following steps can be followed for making the apparatus airtight?

Placing the plants on a glass plate

Using a suction pump

Applying vaseline to seal the bottom of the jar

Creating a vacuum

i and iii

ii and iv

i and ii

ii and iii

3 / 15

Opening and closing of stomatal pore depend on:

Water content in the guard cells

Atmospheric temperature

Carbon dioxide concentration around stomata

Oxygen concentration around stomata

4 / 15

Carefully study the diagram of the human respiratory system with labels A, B, C, and D.

Select the option which gives correct identification and the main function and characteristic.

iv. Diaphragm: It is pulled up when we breathe in.

iii. Alveoli: Thin-walled sac-like structures for the exchange of gases.

i. Trachea: It is supported by bony rings for conducting inspired air.

ii. Ribs: When we breathe out, ribs are lifted.

5 / 15

The excretory system of human beings includes

A kidney, a ureter, a urinary bladder, and a urethra

A pair of kidneys, a pair of urinary bladders, a ureter, and a urethra

A pair of kidneys, a pair of ureters, a pair of urinary bladders, and a urethra

A pair of kidneys, a pair of ureters, a urinary bladder, and a urethra

6 / 15

What is the mode of nutrition in fungi?

Autotrophic

Heterotrophic/Saprophytic

Parasitic

7 / 15

Study the graph below that represents the blood test reports of an athlete just before and after a race.

Choose the correct combination of plots provided in the following table.

	Section of race	The concentration of lactic acid	Type of respiration
a.	A - B (sprint start)	Changing high to low	Changing from anaerobic to aerobic
b.	B - C (maintaining speed)	High to low	Anaerobic
c.	C - D (sprint finish)	High	Aerobic
d.	D - E (just after sprint finishing)	Low	Aerobic

8 / 15

The function of KOH is to absorb

Moisture

Oxygen

Carbon dioxide

Sunlight

9 / 15

The figure given below shows a schematic plan of blood circulation in humans with labels (i) to (iv). Identify the correct label with its functions.

i. Pulmonary vein – takes impure blood from the body part.

iii. Aorta – takes blood from the heart to body parts.

iv. Vena cava – takes blood from body parts to the right auricle.

ii. Pulmonary artery – takes blood from the lung to the heart.

10 / 15

The labeling for the slide of leaf peel showing stomata by a group of four students who made the diagram and tabulated the labels as follows:

life processes class 10 important questions

Choose the correct combination of plots provided in the following table.

	X	Y	Z
a.	Chloroplast	Guard cell	Stomatal pore
b.	Chloroplast	Stomatal pore	Guard cell
c.	Guard cell	Stomatal pore	Chloroplast
d.	Stomatal pore	Chloroplast	Guard cell

11 / 15

Observe the diagram of the human digestive system.

Match the labeling referred to in column I and correlate it with the function in column II.

Column I	Column II
i.	a. The length of this depends on the food the organism eats.
ii.	b. Initial phase of starch digestion.
iii.	c. Increases the efficiency of lipase enzyme action.
iv.	d. This is the site of the complete digestion of carbohydrates, proteins, and fats.

i - b, ii - c, iii – d, iv - a

i - a, ii - b, iii – c, iv - d

i - d, ii - a, iii – b, iv - c

i - b, ii - d, iii – c, iv - a

12 / 15

The respiratory route of air in the respiratory tract of humans is:

Alveoli → larynx → trachea → pharynx → nostrils.

Nostrils → pharynx → larynx → trachea → alveoli.

Alveoli → pharynx → larynx → trachea → nostrils.

Nostrils → trachea → pharynx → larynx → alveoli.

13 / 15

Which of the following statements shows the correct results of the Iodine test performed on the leaf from plant X and Y respectively?

Blue-black color would be obtained on the leaf of plant X and no change in color on the leaf of plant Y.

Red color would be obtained on the leaf of plant Y and brown color on the leaf of plant X.

Blue-black color would be obtained on the leaf of plant Y and no change in color on the leaf of plant X.

Red color would be obtained on the leaf of plant X and brown color on the leaf of plant Y.

14 / 15

Identify the option that indicates the correct enzyme that is secreted in locations A, B, and C.

i. amylase, ii. pepsin, iii. trypsin

i. lipase, ii. trypsin, iii. pepsin

i. trypsin, ii. amylase, iii. carboxylase

i. permease, ii. carboxylase, iii. oxidase

15 / 15

In the given transverse section of the leaf identify the layer of cells where maximum photosynthesis occurs.

III, IV

I, IV

I, II

II, III

Your score is

The average score is 59%

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Pos.	Name	Score	Duration	Points
1	Steve	100 %	30 seconds	15
2	Alobabu	100 %	35 seconds	15
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Key Topics Covered in the Quiz

✔ Autotrophic & Heterotrophic Nutrition
✔ Human Digestive System
✔ Respiration: Aerobic & Anaerobic
✔ Circulatory System & Blood Flow in Humans
✔ Excretion in Humans & Plants

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Life Processes Class 10 MCQ Quiz – Test Your Knowledge!

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About the Quiz

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