Chapter 6 Life Processes MCQs for Class 10 Science

Chapter 6 Life Processes MCQs for Class 10 Science

Here students can practice Chapter 6 Life Processes MCQs for Class 10 Science. All the MCQs are divided into several sub-pages. Each page has 40 MCQs, for the next page just scroll down and click on the buttons. Also you can practice Class 10 Science MCQs (Multiple Choice Questions) for other chapters.

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Q 1.: Amoeba ingests the food with the help of 

(A) Oral opening 

(B) Cilia

(C) Flagella

(D) Pseudopodia

Option – (d)

Q 2.: The liver stores food in the form of

(A) Glucose

(B) Albumen


(D) Glycogen

Option – (d)

Q 3.: Bile is secreted by

(A) Pancreas

(B) Gastric gland

(C) Intestinal gland

(D) Liver

Option – (d)

Q 4.: Pepsin digests

(A) Proteins in stomach

(B)Fats in ileum 

(C) Carbohydrates in duodenum

(D)Proteins in duodenum 

Option – (a)

Q 5.: The main respiratory substrate used in cells is

(A) Glucose

(B) Fructose

(C) Sucrose

(D) Galactose

Option – (a)

Q 6.: Blood that leaves tissues is rich in

(A) Oxygen 

(B) Carbon dioxide

(C) Amino acid

(D) Oxyhaemoglobin

Option – (b)

Q 7.: Vocal cords are present in 

(A) Larynx 


(C) Pharynx

(D) Glottis

Option – (a)

Q 8.: Water enters into root hairs due to

(A) Turgor pressure

(B) Osmotic pressure

(C) Atmospheric pressure

(D) Elastic pressure

Option – (b)

Q 9.: During photosynthesis , the oxygen gas comes from:

(A) CO2

(B) Both CO2 and H2O

(C) Water 

(D) Oxygen via air

Option – (c)

Q 10.: Pigment haemoglobin is present in

(A) RBC 


(C) Blood platelets

(D) Blood plasma

Option – (a)

Q 11.: Urine produced in kidneys is stored temporarily in

(A) Urethra

(B) Ureters

(C) Nephron

(D) Urinary bladder

Option – (d)

Q 12.: The component of blood responsible for transporting O2



(C) Platelets

(D) All of these

Option – (a)

Q 13.: What is correct about human kidney

(A) It is cylindrical

(B) It has 1000 nephrons

(C) It is bean-shaped

(D) Each kidney has two ureters

Option – (c)

Q 14.: Tannins are

(A) Aromatic compounds

(B) Secondary metabolites

(C) Primary metabolites

(D) (a) and (b)

Option – (d)

Q 15.: Concentration of urine depends upon the presence of

(A) Thyroxin


(C) Vasopressin

(D) Melatonin

Option – (b)

Q 16.: The process of separation of amino acids into amino group and                carboxyl group is called

(A) Amination

(B) Excretion

(C) Defaecation

(D) Deamination

Option – (d)

Q 17.: The main function of lymph nodes in human body is to 

(A) Destroy old and worn out RBCs

(B) Produce a hormone 

(C) Produce WBCs

(D) Collect and destroy pathogens entering body

Option – (d)

Q 18.: Light reaction of photosynthesis takes place in

(A) Stroma of chloroplast 

(B) Grana of chloroplast 

(C) Cytoplasm


Option – (b)

Q 19.: Dark reaction in photosynthesis is called so because

(A) It doesn’t require light energy

(B) It occurs more than rapidly in night 

(C) It can also occur in darkness

(D) It can’t occur during daytime 

Option – (a)

Q 20.: Vermiform appendix is a part of 

(A) Alimentary canal 

(B) Nervous system

(C) Vascular system

(D) Reproductive system

Option – (a)

Q 21.: Which part of alimentary canal of man does not secrete any                      enzyme?

(A) Mouth

(B) Oesophagus

(C) Stomach

(D) Duodenum

Option – (b)

Q 22.: The common phase between aerobic and anaerobic respiration                is called

(A) Glycolysis

(B) Krebs cycle

(C) Tricarboxylic acid cycle 

(D) None of these

Option – (a)

Q 23.: The autotrophic mode of nutrition requires

(A) CO2 and H2O

(B) Chlorophyll

(C) Sunlight

(D) All of these

Option – (d)

Q 24.: Emulsification of fat is carried out by

(A) Gastric juice

(B) Bile juice

(C) Intestinal juice

(D)All of these

Option – (b)

Q 25.: The structure which prevents the entry of food into respiratory tract is 

(A) Larynx

(B) Glottis

(C) Pharynx

(D) Epiglottis

Option – (d)

Q 26.: The breakdown of pyruvate to give CO2,H2O and energy takes place in

(A) Cytoplasm

(B) Mitochondria

(C) Nucleus

(D) Chloroplast

Option – (b)

Q 27.: Phagocytosis is carried out by

(A) RBCs

(B) WBCs

(C) Platelets

(D) All of these

Option – (b)

Q 28.: Under normal conditions which one is completely reabsorbed in              the renal tubules?

(A) Urea

(B) Uric acid

(C) Salts

(D) Glucose

Option – (d)

Q 29.: In which of the following groups organisms,food materials are                  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

Option – (b)

Q 30.:The contraction and expansion movement of the walls of the                   food pipe is called:

(A) Translocation

(B) Transpiration

(C) Peristaltic movement

(D) Digestion

Option – (c)

Q 31.: When a few drops of iodine solution are added to rice water,the              solution turns blue-black in colour.This indicates that rice water              contains: 

(A) Fats

(B) Complex proteins

(C) Starch

(D) Simple proteins

Option – (c)

Q 32.: The respiratory pigment in human being is:

(A) Carotene

(B) Chlorophyll

(C) Haemoglobin

(D) Mitochondria

Option – (c)

Q 33.: Which of the following is the important characteristic of                            Emphysema?

(A) Destruction of the alveolar wall and air sacs in the lungs are damaged. 

(B) Increase in the growth of the lung tissue.

(C) Inflammation in the wall of bronchi.

(D) Thickening of the artery walls of the lungs.

Option – (a)

Q 34.: The opening and closing of the stomatal pore depends upon

(A) Oxygen

(B) Temperature

(C) Water in the guard cells

(D) Concentration of CO2

Option – (c)

Q 35.: How is this process advantages for Amoeba?

(A) Capturing of food takes less time

(B) Complex food can be digested easily

(C) More amount of food can be consumed

(D) Fast distribution of nutrition within the body

Option – (d)

Q 36.: A plant gets rid of excess water through transpiration. Which is a method used by plants to get rid of solid waste products?

(A) Shortening of stem

(B) Dropping down of fruits

(C) Shedding of yellow leaves

(D) Expansion of roots into the soil

Option – (c)

Q 37.: Chemical present in tobacco smoke lead to the breakdown of the elastic tissue in the alveoli. Name this specific condition.

(A)Heart disease

(B) Emphysema


(D) Lung cancer

Option – (b)

Q 38.: Digestion of food starts from which organ of the human digestive system?

(A) Mouth due to the presence of saliva

(B) Oesophagus that moves the food in gut

(C) That releases juices for fat breakdown

(D) Which helps in mixing food with digestive juices

Option – (a)

Q 39.: What is the importance of the labelled part in the excretory system?

(A) It produces urine.

(B) It filters waste from the blood.

(C) It stores the urine till urination.

(D) It carries urine from the kidney to the outside.

Option – (c)

Q 40.: What is percentage of the oxygen in the expired air when a                        person is resting ?

(A) 12%

(B) 16%

(C) 20%

(D) 24%

Option – (b)


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We hope that these Chapter 6 Life Processes MCQs for Class 10 Science helped you in learning new concepts. All questions are based on NCERT syllabus and some of them have been asked in various competitive exams. You can go to the next pages to practice more for Chapter 6 Life Processes MCQs for Class 10 Science, click on the question range given above.

Also you can practice Class 10 Science MCQs (Multiple Choice Questions) for other chapters.