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

In which of the following vertebrate groups, the heart does not pump oxygenated blood to different parts of the body?

Pisces only

Pisces and amphibians

Amphibians only

Amphibians and reptiles

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

ii and iii

ii and iv

i and iii

i and ii

3 / 15

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

i. trypsin, ii. amylase, iii. carboxylase

i. permease, ii. carboxylase, iii. oxidase

i. amylase, ii. pepsin, iii. trypsin

i. lipase, ii. trypsin, iii. pepsin

4 / 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.

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

A is false but R is true

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

A is true but R is false

5 / 15

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

Nostrils → pharynx → larynx → trachea → alveoli.

Alveoli → pharynx → larynx → trachea → nostrils.

Nostrils → trachea → pharynx → larynx → alveoli.

Alveoli → larynx → trachea → pharynx → nostrils.

6 / 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.

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

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

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

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

7 / 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 - d, iii – c, iv - a

i - b, ii - c, iii – d, iv - a

i - d, ii - a, iii – b, iv - c

i - a, ii - b, iii – c, iv - d

8 / 15

The function of KOH is to absorb

Sunlight

Carbon dioxide

Moisture

Oxygen

9 / 15

The characteristic processes observed in anaerobic respiration are:

Presence of oxygen

Release of carbon dioxide

Release of energy

Release of lactic acid

i, ii only

ii, iii, iv only

i, ii, iii only

iv only

10 / 15

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

III, IV

I, IV

II, III

I, II

11 / 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.

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

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

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

12 / 15

Study the picture given above and choose the correct combination of plots provided in the following table:

	X	Process Used	Function
a.	Dialyzing pump	Filtration	To draw blood from the body and send it to the dialyzer.
b.	Dialysate	Osmosis	To add fluid to the blood.
c.	Blood thinner	Clotting	To remove the clots from the blood.
d.	Dialyser	Diffusion	To remove the excess wastes and fluid from the blood.

13 / 15

Lime water turns cloudy in the presence of a gas which is a by-product of respiration.

Shown below are four setups kept in sunlight for 24 hours.

life processes class 10 important questions and answers

In which setup is lime water expected to be the cloudiest?

Setup Q

Setup S

Setup R

Setup P

14 / 15

Which of the following statement(s) is(are) true about human heart?

Left atrium receives oxygenated blood from different parts of the body while the right atrium receives deoxygenated blood from the lungs.

Left ventricle pumps oxygenated blood to different body parts while the right ventricle pumps deoxygenated blood to the lungs.

Left atrium transfers oxygenated blood to the right ventricle which sends it to different parts of the body.

Right atrium receives deoxygenated blood from different parts of the body while the left ventricle pumps oxygenated blood to different parts of the body.

i and iii

ii and iv

15 / 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.

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

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

Your score is

The average score is 57%

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Pos.	Name	Score	Duration	Points
1	Steve	100 %	30 seconds	15
2	Alobabu	100 %	35 seconds	15
3	Shlok	100 %	43 seconds	15
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187	Kashvi Sharma	67 %	7 minutes 35 seconds	10
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198	J	67 %	1 hours 17 seconds	10
199	OK	67 %	11 hours 36 minutes 41 seconds	10
200	B. .	60 %	1 minutes 15 seconds	9

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!

About the Quiz

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About the Quiz

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