Class 10 Science Chapter 5 MCQ (Multiple Choice Questions) test series of Life Processes updated for new academic session 2024-25. These questions are important for CBSE Board examination as it contains important questions from CBSE Sample Papers, Questions from Board Papers also. After going through the chapter 5 of Class 10 Science, students should practice these questions to cross check there level of preparation for exams. More MCQ Questions will be added as per need of the students.

Class 10 Science Chapter 5 MCQ for 2024-25

Class:10
Subject:Science
Chapter: 5Life Processes
Contents:MCQ Tests
Session:CBSE 2024-25

Class 10 Science Chapter 5 MCQ Test for Revision

The following test of MCQs contains 10 questions for practice. Considering each questions as of 1 mark, attend the test. If you are getting less than 40 percent marks means, you need to go through NCERT Books once again. Doing more than 6 or more questions correctly is satisfactory.

Q1

Which is the correct sequence of parts in human alimentary canal?

[A]. Mouth → Stomach → Small intestine → Oesophagus → Large intestine
[B]. Mouth → Oesophagus → Stomach → Large intestine → Small intestine
[C]. Mouth → Stomach → Oesophagus → Small intestine → Large intestine
[D]. Mouth → Oesophagus → Stomach → Small intestine → Large intestine
Q2

Select the correct statement:

[A]. Heterotrophs do not synthesize their own food
[B]. Heterotrophs utilize solar energy for photosynthesis
[C]. Heterotrophs synthesize their own food
[D]. Heterotrophs are capable of converting carbon dioxide and water into carbohydrates
Q3

Which of the following statements about the autotrophs is incorrect?

[A]. They synthesise carbohydrates from carbon dioxide and water in the presence of sunlight and chlorophyll.
[B]. They store carbohydrates in the form of starch.
[C]. They convert carbon dioxide and water into carbohydrates in the absence of sunlight.
[D]. They constitute the first trophic level in food chains.
Q4

If salivary amylase is lacking in the saliva, which of the following events in the mouth cavity will be affected?

[A]. Proteins breaking down into amino acids.
[B]. Starch breaking down into sugars.
[C]. Fats breaking down into fatty acids and glycerol.
[D]. Absorption of vitamins.
Q5

Lack of oxygen in muscles often leads to cramps among cricketers. This result due to

[A]. Conversion of pyruvate to ethanol
[B]. Conversion of pyruvate to glucose
[C]. Non conversion of glucose to pyruvate
[D]. Conversion of pyruvate to lactic acid
Q6

The internal (cellular) energy reserve in autotrophs is

[A]. Glycogen
[B]. Protein
[C]. Starch
[D]. Fatty acid
Q7

The inner lining of stomach is protected by one of the following from hydrochloric acid. Choose the correct one.

[A]. Pepsin
[B]. Mucus
[C]. Salivary amylase
[D]. Bile
Q8

The opening and closing of the stomatal pore depends upon

[A]. Oxygen
[B]. Temperature
[C]. Water in guard cells
[D]. Concentration of CO2 in stomata
Q9

Rahul is writing some sentences about the process of photosynthesis. Choose the correct statements which is related to photosynthesis:

[A]. Absorption of light energy by chlorophyll.
[B]. Conversion of light energy into chemical energy and splitting of water into hydrogen and oxygen by light energy.
[C]. Reduction of carbon dioxide by hydrogen to form carbohydrate like glucose by utilising the chemical energy.
[D]. All the above.
Q10

Which of the following equations is the summary of photosynthesis?

[A]. 6CO2 + 12H2O → C6H12O6 + 6CO2 + 6H2O
[B]. 6CO2 + H2O + Sunlight → C6H12O6 + O2 + 6H2O
[C]. 6CO2 + 12H2O + Chlorophyll + Sunlight → C6H12O6 + 6O2 + 6H2O
[D]. 6CO2 + 12H2O + Chlorophyll + Sunlight → C6H12O6 + 6CO2 + 6H2O
Q11

Which is the correct sequence of air passage during inhalation?

[A]. Nostrils → larynx → pharynx → trachea → lungs
[B]. Nasal passage → trachea → pharynx → larynx → alveoli
[C]. Larynx → nostrils → pharynx → lungs
[D]. Nostrils → pharynx → larynx → trachea → alveoli
Q12

During respiration exchange of gases take place in

[A]. Trachea and larynx
[B]. Alveoli of lungs
[C]. Alveoli and throat
[D]. Throat and larynx
Q13

Which of the following statement is true about heart?

[A]. Left atrium receives oxygenated blood from different parts of body while right atrium receives deoxygenated blood from lungs.
[B]. Left ventricle pumps oxygenated blood to different body parts while right ventricle pumps deoxygenated blood to lungs.
[C]. Left ventricle pumps oxygenated blood to different body parts while right ventricle pumps deoxygenated blood to lungs.. Right atrium receives deoxygenated blood from different parts of the body while left ventricle pumps oxygenated blood to different parts of the body.
[D]. Left atrium receives oxygenated blood from different parts of body while right atrium receives deoxygenated blood from lungs.. Left atrium transfers oxygenated blood to right ventricle which sends it to different body parts.
Q14

Badal appeared in class test but he confused to know the incorrect statement. Would you help him to know that?

[A]. The aquatic plants use the carbon dioxide gas dissolved in water for carry out photosynthesis.
[B]. The water required by the plants for photosynthesis is absorbed by the roots of the plants from the soil through the process of osmosis.
[C]. The plants also need materials like nitrogen, phosphorus, iron and magnesium.
[D]. The site of photosynthesis in a cell of a leaf are chromoplast.
Q15

Oxygen liberated during photosynthesis comes from

[A]. Water
[B]. Chlorophyll
[C]. Carbon dioxide
[D]. Glucose
Q16

Choose the correct statement that describes arteries.

[A]. They have thick elastic walls, blood flows under high pressure; collect blood from different organs and bring it back to the heart.
[B]. They have thin walls with valves inside, blood flows under low pressure and carry blood away from the heart to various organs of the body.
[C]. They have thick elastic walls, blood flows under low pressure; carry blood from the heart to various organs of the body.
[D]. They have thick elastic walls without valves inside, blood flows under high pressure and carry blood away from the heart to different parts of the body.
Q17

Single circulation i.e., blood flows through the heart only once during one cycle of passage through the body, is exhibited by

[A]. Labeo, Chameleon, Salamander
[B]. Hippocampus, Exocoetus, Anabas
[C]. Hyla, Rana, Draco
[D]. Whale, Dolphin, Turtle
Q18

Vishrut appeared in class test but he confused to know the incorrect statement. Would you help him to know that?

[A]. Animals can move from one place to another or they can move their body parts.
[B]. The plants can only move parts of their body such as leaves, flowers, shoots and roots.
[C]. Non-living things which are not alive they also move by themselves.
[D]. The movement over very small-scale organisms are invisible to the naked eyes.
Q19

Read the following sentences carefully, and choose the incorrect one:

[A]. An aerobic respiration take place in our muscles during vigorous physical exercise when oxygen gets used up faster in the muscles cells.
[B]. The accumulation of lactic acid in the muscles cause muscle cramps.
[C]. We can get relief from cramps in muscles caused by heavy exercise by taking a hot water bath or a message.
[D]. None of the above.
Q20

Which of the following statement is or are incorrect?

[A]. The respiration which takes place without oxygen is called an aerobic respiration.
[B]. In an aerobic respiration the microorganisms like east break down glucose into ethanol and carbon dioxide and release energy.
[C]. The whole process of an aerobic respiration take place in the Protoplasm of cells.
[D]. None of the above
Q21

Choose the forms in which most plants absorb nitrogen

[A]. Proteins, Nitrates and Nitrites.
[B]. Urea, Nitrates and Nitrites.
[C]. Urea, Atmospheric nitrogen.
[D]. Atmospheric nitrogen and Proteins.
Q22

Which of the following statement is correct?

[A]. Pyruvate can be converted into ethanol and carbon dioxide by yeast. Fermentation takes place in mitochondria.
[B]. Fermentation takes place in aerobic bacteria. Fermentation is a form of anaerobic respiration.
[C]. Pyruvate can be converted into ethanol and carbon dioxide by yeast. Fermentation is a form of anaerobic respiration.
[D]. Fermentation takes place in aerobic bacteria. Fermentation takes place in mitochondria.
Q23

Lack of oxygen in muscles often leads to cramps among cricketers. This results due to

[A]. Conversion of pyruvate to ethanol.
[B]. Conversion of pyruvate to glucose.
[C]. Non conversion of glucose to pyruvate.
[D]. Conversion of pyruvate to lactic acid.
Q24

In the last year board examination, Rahul were asked a question where he had to choose the statement which was/were incorrect? Will you be able to answer this question?

[A]. The respiration which uses oxygen is called aerobic respiration.
[B]. Aerobic respiration produces a considerable amount of energy for use by the organisms which gets stored in the ATP molecules.
[C]. Golgi body are the sites of aerobic respiration in the cells.
[D]. When the cell needs energy then ATP can be broken down using water to release energy.
Q25

Vikas is doing his homework which is given by his teacher. Would you help him to choose the correct sentences?

[A]. Tooth enamel is the hardest material in our body.
[B]. The formation of small cavities or holes in the teeth due to the action of acid forming bacteria and improper “Dental Care” is called dental caries.
[C]. If the teeth are not cleaned regularly, they become covered with sticky yellow is layer of food particles and bacteria cells called dental plaque.
[D]. All the above.
Class 10 Science Chapter 5 MCQ Tests

Class 10 Science Chapter 5 MCQ Tests are given for the practice of topic LIFE PROCESSES. The questions are picked up from NCERT Books, Some popular publisher’s books and NCERT Exemplar Problems books. These are a complete sets of questions for knowledge testing as well as preparation of CBSE Board Exams.

Are MCQs of chapter 5 important for class 10 Board exams?

As per the latest syllabus MCQs are compulsory in board exams. There will be very short questions including MCQ. It may be case study based questions or direct multiple choice questions.

Is the explanation of MCQ required in Board Exams for full score?

You may give only the correct option as answer but if you know the correct explanation, please give in brief.

What are the maximum number of MCQs in Class 10 Science Boards?

The maximum marks of MCQ depends on weightage of the chapter in class 10th science.

Download NCERT Books and Offline Apps 2024-25 based on new CBSE Syllabus. Ask your doubts related to NIOS or CBSE Board and share your knowledge with your friends and other users through Discussion Forum.

Last Edited: April 26, 2023