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

Chloroplast are the organelles in the cells of green plants which contain chlorophyll and where photosynthesis take place. Thus, photosynthesis occurs in the organelles called the chloroplast present in the photosynthetic cell or mesophyll cell of green plants. In the other words, the site of photosynthesis in cell of the leaf are chloroplast. Chloroplast can be seen easily by using a light microscope.

In tissues of human beings, glucose is converted into pyruvic acid in the

The first step is the break-down of glucose, a six-carbon molecule, into a three-carbon molecule called pyruvate. This process takes place in the cytoplasm.

Which of the following statements about the autotrophs is incorrect?

Because autotrophs convert carbon dioxide and water into carbohydrates in the PRESENCE of sunlight.

Select the correct statement from the following.

Heterotrophs do not synthesise their own food. They feed on autotrophs for their nutrition.

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

Starch breaking down into sugars and later on in Stomach it further break down in glucose.

Consider the following statements and choose the incorrect one:

Here, all the statements are correct. Hence your answer will be option [D].

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

Non-living things which are not alive cannot move by themselves. For example, a stone is a non-living thing which cannot move by itself from one place to another or show any other type of movement. We will have to move it by applying force from outside.

Nancy is writing some sentences about living things. Choose the statements which do not shows the characteristics of living things:

Living things can move by themselves. The plants are fixed in the soil at a place so they cannot move like animals from place to place but the plants can only move parts of their body such as leaves, flowers, roots etc.

Which of the following statement is or are incorrect?

Energy is required by an organism even during sleep because when we are asleep a number of biological processes keep on occurring in the body which require energy. Our heart beats non-stop even when we are asleep to pump blood throughout the body. And this beating of heart requires energy. Thus, the working of heart requires are continuous supply of energy.

Which of the following statement(s) is (are) correct?

Fermentation is a form of anaerobic respiration. Pyruvate can be converted into ethanol and CO, in yeast during fermentation. Since this process takes place in the absence of air (oxygen), it is called anaerobic respiration. It takes place in cytoplasm. Break down of pyruvate using oxygen, i.e., aerobic respiration takes place in the mitochondria.

Priya is writing some statements, choose the correct statement and help him:

Here, all the statements are correct. Hence your answer will be option [D].

Which of the following is an incorrect statement?

Cells generally does not share the transaction of the particles or molecules.

A few drops of iodine solution were added to rice water. The solution turned blue-black in colour. This indicates that rice water contains

The solution turned blue-black in colour just because of starch.

Choose the function of the pancreatic juice from the following

Trypsin digests proteins in basic medium of food (pepsin digest proteins in acidic medium) and lipase emulsified fats.

In a quiz competition, you are asked a question where you have to choose the statement which is/ are incorrect?

Organisms which can make their own food from carbon dioxide and water are called autotrophs. Carbon dioxide and water are inorganic substance. So, we can say that, those organisms which can make their own food from the inorganic substances present in the environment are called autotrophs. All the green plants are autotrophs.

Choose the forms in which most plants absorb nitrogen:

Nitrogen is an essential element used in the synthesis of proteins and other compounds. This is taken up in the form of inorganic nitrates or nitrites. Sometimes it is taken up as organic compounds i.e., urea, which have been prepared by bacteria from atmospheric nitrogen.

Choose the event that does not occur in photosynthesis

Carbon dioxide is used in photosynthesis for the products on of food. The oxidation of carbon compounds occurs in respiration.

Which of the following statement is true about heart?

Oxygen-rich blood from the lungs comes to the thin-walled upper chamber of the heart on the left, the left atrium. The left atrium relaxes when it is collecting this blood. It then contracts, while the next chamber, the left ventricle, relaxes, so that the blood is transferred to it. When the muscular left ventricle contracts in its turn, the blood is pumped out to the body. De-oxygenated blood comes from the body to the upper chamber on the right, the right atrium, as it relaxes. As the right atrium contracts, the corresponding lower chamber, the right ventricle, dilates. This transfers blood to the right ventricle, which in turn pumps it to the lungs for oxygenation. Since ventricles have to pump blood into various organs, they have thicker muscular walls than the atria do. Valves ensure that blood does not flow backwards when the atria or ventricles contract.

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

Chloroplast are the organelles in the cells of green plants which contain chlorophyll and where photosynthesis take place. Thus, photosynthesis occurs in the organelles called the chloroplast present in the photosynthetic cell or mesophyll cell of green plants. In the other words, the site of photosynthesis in cell of the leaf are chloroplast. Chloroplast can be seen easily by using a light microscope.

In a quiz competition, you are asked a question where you have to choose the statement which is/ are incorrect?

Here, all the statements are correct. Hence your answer will be option [D].

Urvashi is completed her science chapter where she wrote some statements. She wants to know whether the statements are correct or not? Urvashi wants to take help from you:

The oesophagus carries food to the stomach. When the slightly digested food enters the food pipe, the walls of food pipe start contraction and expansion movements. The contraction and expansion movement of the walls of food pipe is called peristaltic movement. This peristaltic movement of food pipe pushes the slightly digested food into the stomach.

Neha is writing some sentences about living things. Choose the statements which do not shows the characteristics of living things:

Living things can move by themselves. The plants are fixed in the soil at a place so they cannot move like animals from place to place but the plants can only move parts of their body such as leaves, flowers, roots etc.

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

Non-living things which are not alive cannot move by themselves. For example, a stone is a non-living thing which cannot move by itself from one place to another or show any other type of movement. We will have to move it by applying force from outside.

During respiration exchange of gases take place in

It is in the alveoli in the lungs where gaseous exchange takes place. The walls of the alveoli are very thin and surrounded by network of very thin blood capillaries. The presence of millions of alveoli in the lungs provides a large area for the exchange of gases.

Class 10 Science Chapter 5 MCQ (Multiple Choice Questions)

Updated by Tiwari Academy
on April 26, 2023, 6:22 AM

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: 5	Life 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.

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

In which of the following groups of organisms, food material is broken down outside the body and absorbed?

[A]. Mushroom, green plants, Amoeba.

[B]. Yeast, mushroom, bread mould.

[C]. Paramecium, Amoeba, Cuscuta.

[D]. Cuscuta, lice, tapeworm.

The blood leaving the tissues becomes richer in

[A]. Carbon dioxide

[B]. Water

[C]. Heamoglobin

[D]. Oxygen

During deficiency of oxygen in tissues of human beings, pyruvic acid is converted into lactic acid in the:

[A]. Cytoplasm

[B]. Chloroplast

[C]. Mitochondria

[D]. Golgi body

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

The internal (cellular) energy reserve in autotrophs is

[A]. Glycogen

[B]. Protein

[C]. Starch

[D]. Fatty acid

Which part of alimentary canal receives bile from the liver?

[A]. Stomach

[B]. Small intestine

[C]. Large intestine

[D]. Oesophagus

In which part of the alimentary canal food is finally digested?

[A]. Stomach.

[B]. Mouth cavity.

[C]. Large intestine.

[D]. Small intestine.

Consider the following statements and choose the correct one:

[A]. The holozoic nutrition is that nutrition in which an organism takes the complex organic food materials into its body by the process of ingestion, the ingested food is digested and then absorbed into the body cells of the organism.

[B]. The parasitic nutrition is that a nutrition in which an organism derives its food from the body of another living organisms without killing it.

[C]. Saprotrophic nutrition is that nutrition in which an organism obtains its food from decaying organic matter of dead plants, dead animals and rotten bread etc.

[D]. All the above.

Q10

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.

Q11

When air is blown from mouth into a test-tube containing lime water, the lime water turned milky due to the presence of

[A]. Oxygen

[B]. Carbon dioxide

[C]. Nitrogen

[D]. Water vapour

Q12

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

Q13

What prevents backflow of blood inside the heart during contraction?

[A]. Valves in heart.

[B]. Thick muscular walls of ventricles.

[C]. Thin walls of atria.

[D]. All of the above.

Q14

Oxygen liberated during photosynthesis comes from

[A]. Water

[B]. Chlorophyll

[C]. Carbon dioxide

[D]. Glucose

Q15

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

[A]. The process of obtaining food by Amoeba is called phagocytosis.

[B]. The digested food present in the food vacuole of Amoeba is absorbed directly into the cytoplasm of amoeba cell by diffusion.

[C]. Amoeba has fixed place for removing the undigested part of food.

[D]. A part of the food absorbed in Amoeba cell is used to obtain energy through respiration.

Q16

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.

Q17

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.

Q18

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

[A]. Pisces and amphibians

[B]. Amphibians and reptiles

[C]. Amphibians only

[D]. Pisces only

Q19

What prevents backflow of blood inside the heart during contraction?

[A]. Valves in heart

[B]. Thick muscular walls of ventricles

[C]. Thin walls of atria

[D]. All of the above

Q20

Which of the following statement (s) is (are) 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, and 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, and Left atrium transfers oxygenated blood to right ventricle which sends it to different body parts.

Q21

The opening and closing of the stomatal pore depends upon

[A]. Oxygen.

[B]. Temperature.

[C]. Water in guard cells.

[D]. Concentration of Carbon Dioxide in stomata.

View Answer

Q22

Which is the first enzyme to mix with food in the digestive tract?

[A]. Pepsin

[B]. Cellulase

[C]. Amylase

[D]. Trypsin

View Answer

Q23

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.

View Answer

Q24

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.

View Answer

Q25

Which of the following statement is or are correct?

[A]. Each kidney is made up of a large number of excretory units called nephrons.

[B]. The best long-term solution for kidney failure is the kidney transplant.

[C]. The process used to clean the blood of a person by separating the waste substance from it, is called dialysis.

[D]. All the above.

View Answer

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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.

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Last Edited: April 26, 2023