Life Processes MCQ Questions for Class 10 Science Chapter 6 with Answers

NCERTCOURSE.COM- Find here the NCERT/CBSE chapter-wise Multiple Choice Questions from Class 10 Science book Chapter 6 Life Processes with Answers Pdf free download. This may assist you to understand and check your knowledge about the chapters. Students also can take a free test of the Multiple Choice Questions of Life Processes. Each question has four options followed by the right answer. These MCQ Questions are selected supported by the newest exam pattern as announced by CBSE.

MCQ Questions for Class 10 Science with Answers Biology

Q1. Which region of the alimentary canal absorbs the digested food?

(i) Stomach
(ii) Small intestine
(iii) Large intestine
(iv) Liver

(ii) Small intestine

Q2. When air is blown from mouth into a test-tube containing lime water, the lime water turned milky due to the presence of

(i) oxygen
(ii) carbon dioxide
(iii) nitrogen
(iv) water vapour

(ii) carbon dioxide

Q3. Woody plants carry gaseous exchange through

(i) root hair
(ii) stem hair
(iii) Lenticels
(iv) epidermal cells.

(iii) Lenticels

Q4. The ultimate source of all metabolic energy on our earth is:

(i) green plants
(ii) the sun
(iii) O2
(iv) O2 and H2O.

(ii) the sun

Q5. In amoeba, food is digested in the:

(i) food vacuole
(ii) mitochondria
(iii) pseudopodia
(iv) chloroplast

(i) food vacuole

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

(i) complex proteins
(ii) simple proteins
(iii) fats
(iv) starch

(iv) starch

Q7. The site of photosynthesis in the cells of a leaf is

(i) chloroplast
(ii) mitochondria
(iii) cytoplasm
(iv) protoplasm

(i) chloroplast

Q8. Rate of photosynthesis is high in:

(i) orange light
(ii) green light
(iii) red light
(iv) yellow light

(iii) red light

Q9. Roots of the plants absorb water from the soil through the process of:

(i) diffusion
(ii) transpiration
(iii) osmosis
(iv) None of these

(iii) osmosis

Q10. The extracellular fluid released from the capillaries is:

(i) serum
(ii) plasma
(iii) lymph
(iv) mucus

(iii) lymph

Q11. The mode of nutrition found in fungi is:

(i) Parasitic nutrition
(ii) Holozoic nutrition
(iii) Autotrophic nutrition
(iv) Saprotrophic nutrition

(iv) Saprotrophic nutrition

Q12. ATP and NADP 2H are produced in:

(i) Mitochondria
(ii) Chloroplast
(iii) Peroxisomes
(iv) Lysosomes

(i) Mitochondria

Q13. In which mode of nutrition an organism de-rives its food from the body of another living organism without killing it?

(i) Saprotrophic nutrition
(ii) Parasitic nutrition
(iii) Holozoic nutrition
(iv) Autotrophic nutrition

(ii) Parasitic nutrition

Q14. The back flow of blood during the pumping of blood by heart is prevented by:

(i) Walls of ventncles
(ii) Walls of atrium
(iii) Valves in heart
(iv) Walls between atria and ventricles

(iii) Valves in heart

Q15. When air is blown from mouth into a test – tube containing lime water, the lime water turned milky due to presence of:

(i) oxygen
(ii) nitrogen
(iii) water vapour
(iv) carbon dioxide

(iv) carbon dioxide

Q16. Pancreatic juice helps in the digestion of:

(i) proteins
(ii) proteins and fats
(iii) proteins and carbohydrates
(iv) proteins, carbohydrates and fats

(iv) proteins, carbohydrates and fats

Q17. Which of the following are energy foods?

(i) Carbohydrates and fats
(ii) Proteins and mineral salts
(iii) Vitamins and minerals
(iv) Water and roughage

(i) Carbohydrates and fats

Q18. The enzyme responsible for the digestion of proteins in the small intestine is:

(i) Pepsin
(ii) Trypsin
(iii) Amylase
(iv) Lipase

(iv) Lipase

Q19. Name the substances whose build up in the muscles during vigorous physical exercise may cause cramps?

(i) Ethanol + Carbon dioxide + Energy
(ii) Lactic acid + Energy
(iii) Carbon dioxide + Water + Energy
(iv) Pyruvate

(ii) Lactic acid + Energy

Q20. Number of salivary glands found in man are:

(i) one pair
(ii) two pairs
(iii) three pairs
(iv) five pairs

(iii) three pairs

Q21. Name a circulatory fluid in the human body other than blood.

(i) Platelets
(ii) RBC
(iii) Lymph
(iv) Plasma

(iii) Lymph

Q22. Which is the first enzyme to mix with food i the digestive tract?

(i) Pepsin
(ii) Cellulose
(iii) Amylase
(iv) Trypsin

(iii) Amylase

Q23. Which region of the alimentary canal absorbs the digested food?

(i) Stomach
(ii) Small intestine
(iii) Large intestine
(iv) Liver

(ii) Small intestine

Q24. The autotrophic mode of nutrition requires:

(i) carbon dioxide and water
(ii) chlorophyll
(iii) sunlight
(iv) all of the above

(iv) all of the above

Q25. The movement of food in phloem is called:

(i) transpiration
(ii) translocation
(iii) respiration
(iv) evaporation

(ii) translocation

Q26. In which of the following vertebrate group/groups, heart does not pump oxygenated blood to different parts of the body?

(i) Pisces and amphibians
(ii) Amphibians and reptiles
(iii) Amphibians only
(iv) Pisces only

(iv) Pisces only

Q27. Trachea do not collapse when there is not much air because they are:

(i) thick and muscular
(ii) having cartilaginous rings
(iii) have valves
(iv) supported by larynx.

(ii) having cartilaginous rings

Q28. Excess glucose is stored in our body in the form of:

(i) glycogen
(ii) fat
(iii) protein
(iv) cholesterol.

(i) glycogen

Q29. Blood vessel which carries oxygenated blood from lungs is:

(i) pulmonary vein
(ii) pulmonary artery
(iii) coronary artery
(iv) superior venacava

(i) pulmonary vein

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