Class 10 Science Chapter 6 MCQ

Class 10 Science Chapter 6 MCQ (Multiple Choice Questions) test series of Life Processes updated for new academic session 2021-22. 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 6 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 6 MCQ for 2021-22

Class:10
Subject:Science
Contents:MCQ Tests

Class 10 Science Chapter 6 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

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
Q2

Which of the following statements about the autotrophs is incorrect?

[A]. They synthesize 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.
Q3

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

[A]. Cytoplasm.
[B]. Chloroplast.
[C]. Mitochondria.
[D]. Golgi body.
Q4

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.
Q5

Consider the following statements and choose the incorrect one:

[A]. All the plants and animals are alive all living things.
[B]. The most important Criterion to decide whether something is alive or not is the movement.
[C]. The movements in most of the animals are fast and can be observed easily but the movement in plants are usually slow and observed with difficulties.
[D]. All the above.




Q6

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

[A]. complex proteins.
[B]. simple proteins.
[C]. fats.
[D]. starch.
Q7

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

[A]. Pepsin
[B]. Cellulase
[C]. Amylase
[D]. Trypsin
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

In a science quiz competition, Saumya are asked a question where she had to choose the statement which was/were incorrect?

[A]. The green plants convert sunlight energy into chemical energy by making carbohydrates.
[B]. The food prepared by the green leaves of a plant is in the form of simple sugar called glucose.
[C]. The process by which green plants make their own food like glucose from carbon dioxide and water by using sunlight energy in the presence of chlorophyll, is called photosynthesis.
[D]. The chemical structure of glucose is C6H2O6.
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

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.
Q12

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.
Q13

Oxygen liberated during photosynthesis comes from

[A]. Water
[B]. Chlorophyll
[C]. Carbon dioxide
[D]. Glucose
Q14

Which part of alimentary canal receives bile from the liver?

[A]. Stomach
[B]. Small intestine
[C]. Large intestine
[D]. Oesophagus
Q15

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



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

Choose the event that does not occur in photosynthesis

[A]. Absorption of light energy by chlorophyll.
[B]. Reduction of carbon dioxide to carbohydrates.
[C]. Oxidation of carbon to carbon dioxide.
[D]. Conversion of light energy to chemical energy.
Q18

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.
Q19

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.
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

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(s) is (are) true about respiration?

[A]. During inhalation, ribs move inward and diaphragm is raised, and Alveoli increase surface area for exchange of gases.
[B]. In the alveoli, exchange of gases takes place i.e., oxygen from alveolar air diffuses into blood and carbon dioxide from blood into alveolar air, and Haemoglobin has greater affinity for carbon dioxide than oxygen.
[C]. During inhalation, ribs move inward and diaphragm is raised, and Haemoglobin has greater affinity for carbon dioxide than oxygen.
[D]. In the alveoli, exchange of gases takes place i.e., oxygen from alveolar air diffuses into blood and carbon dioxide from blood into alveolar air, and Alveoli increase surface area for exchange of gases.
Q23

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
Q24

Read the following sentences carefully, and choose the incorrect one(s):

[A]. The maximum pressure at which the blood leaves the heart through the main artery during contraction phase is called the systolic pressure.
[B]. The minimum pressure in the arteries during the relaxation phase of heart is called the diastolic pressure.
[C]. Blood pressure is measured by using an instrument called sphygmomanometer.
[D]. The normal blood pressure usually written as 80 upon 120
Q25

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

[A]. Complex proteins
[B]. Simple proteins
[C]. Fats
[D]. Starch
Class 10 Science Chapter 6 MCQ Tests

Class 10 Science Chapter 6 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 important for class 10 Board exams?

From 2019-20, MCQs are compulsory in board exams. There will be 20 marks for very short questions including MCQ, Fill in the blanks, etc.

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?

There may be maximum of 20 MCQs in Class 10 Science Examination.

What are the marks of each MCQ?

Generally, each MCQ consists of 1 mark only.

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