Read and download free pdf of CBSE Class 10 Biology Life Processes Respiration Worksheet Set A. Download printable Science Class 10 Worksheets in pdf format, CBSE Class 10 Science Chapter 6 Life Processes Worksheet has been prepared as per the latest syllabus and exam pattern issued by CBSE, NCERT and KVS. Also download free pdf Science Class 10 Assignments and practice them daily to get better marks in tests and exams for Class 10. Free chapter wise worksheets with answers have been designed by Class 10 teachers as per latest examination pattern
Chapter 6 Life Processes Science Worksheet for Class 10
Class 10 Science students should refer to the following printable worksheet in Pdf in Class 10. This test paper with questions and solutions for Class 10 Science will be very useful for tests and exams and help you to score better marks
Class 10 Science Chapter 6 Life Processes Worksheet Pdf
Multiple Choice Questions (MCQs)
Question. Which of the following is not produced during anaerobic respiration in unicellular fungus ?
(a) C2H5OH
(b) H2O
(c) CO2
(d) ATP
Answer : B
Question. One of the following organisms can live without oxygen of air. This organism is :
(a) Amoeba
(b) Yak
(c) Yeast
(d) Leech
Answer : C
Question. During respiration, the exchange of gases takes place in :
(a) bronchi
(b) alveoli
(c) bronchioles
(d) trachea
Answer : B
Question. In one of the following organisms, the gaseous exchange during repiration does not take place through cell membrane/skin. This organism is :
(a) Electric eel
(b) Leech
(c) Earthworm
(d) Amoeba
Answer : A
Question. Which of the following is known as the energy currency of cells in biology ?
(a) DTP
(b) PDP
(c) ATP
(d) DDT
Answer : C
Question. The two organisms which breathe only through their moist skin are :
(a) fish and frog
(b) frog and earthworm
(c) leech and earthworm
(d) fish and earthworm
Answer : C
Question. One of the following animals does not use tracheae as the respiratory organs. This animal is :
(a) grasshopper
(b) prawn
(c) mosquito
(d) cockroach
Answer : B
Question. When air is blown from mouth into a test-tube containing lime water, the lime water turns milky due to the presence of :
(a) oxygen
(b) carbon dioxide
(c) nitrogen
(d) water vapour
Answer : B
Question. Which of the following statements are true about respiration ?
(i) during inhalation, ribs move inward and diaphragm is raised.
(ii) the gaseous exchange takes place in the alveoli.
(iii) haemoglobin has greater affinity for carbon dioxide than oxygen.
(iv) alveoli increase surface area for the exchange of gases
(a) (i) and (iv)
(b) (ii) and (iii)
(c) (i) and (iii)
(d) (ii) and (iv)
Answer : D
Question. Which of the following is correct for the process of anaerobic respiration ?
Carbon dioxide A lot of energy always produced released
(a) No Yes
(b) No No
(c) Yes No
(d) Yes Yes
Answer : B
Question. When a person eats sugary food, then organisms A present in his mouth act on sugar to produce a substance
B. The substance B first dissolves the calcium salts from the top part C of the tooth and then from its middle part D forming holes
E. These holes ultimately reach the part F in the lower part of tooth which contains nerves and blood vessels. The substance B irritates the nerve endings inside the tooth causing toothache.
(a) What are (i) organisms A, and (ii) substance B ?
Answer : (i) Bacteria (ii) Acid
(b) What are (i) part C, and (ii) part D, of tooth known as ?
Answer : (i) Enamel (ii) Dentine
(c) By what name are the holes E in the tooth known ?
Answer : Dental caries
(d) Name the part F of the tooth.
Answer : Pulp cavity
(e) What will happen if organisms A reach part F of the tooth ?
Answer : Inflammation and infection will occur leading to severe pain
Question. If the teeth are not cleaned regularly, they become covered with a sticky yellowish layer W of food particles and bacteria. Since layer W covers the teeth, the alkaline liquid X secreted by glands Y inside the mouth cannot reach the teeth surface to neutralise the acid formed by the action of organisms Z on sugary food, and hence tooth decay sets in.
(a) What is W known as ?
Answer : Dental plaque
(b) What is (i) X, and (ii) Y ?
Answer : (i) Saliva (ii) Salivary glands
(c) What are organisms Z ?
Answer : Bacteria
(d) State one way of removing layer W from the teeth.
Answer : Brushing the teeth regularly after eating food
Question. When a person puts food in his mouth, then teeth cut it into small pieces, chew and grind it. The glands A in the mouth secrete a substance B which is mixed with the food by tongue. The substance B contains an enzyme C which starts the digestion of food in the mouth. The slightly digested food from the mouth goes down a tube D. The special type of movements E in the walls of tube D push the food into stomach for further digestion. The stomach wall secretes gastric juice containing three substance F, G and H. One of the functions of F is to kill bacteria which may enter the stomach with food. The substance G protects the inside layer of stomach from the damaging effect of substance F whereas substance H is an enzyme for digestion.
The partially digested food then enters into small intestine for further digestion.
(a) What is (i) gland A (ii) substance B, and (iii) enzyme C ?
Answer : (i) Salivary gland (ii) Saliva (iii) Salivary amylase
(b) Name the tube D.
Answer : Oesophagus
(c) What is the movement E known as ?
Answer : Peristaltic movement
(d) What are (i) F (ii) G, and (iii) H ?
Answer : (i) Hydrochloric acid (ii) Mucus (iii) Enzyme pepsin
Question. The partially digested food coming from the stomach of a person enters a long and narrow organ A in his body. The organ A receives the secretions of two glands : liver and pancreas. Liver secretes a greenishyellow liquid B which is normally stored in the organ C. Pancreas secretes pancreatic juice which contains Nthree digestive enzymes D, E and F. The intestinal juice completes the process of digestion of food. The inner wall of organ A has millions of tiny finger-like projections G which help in the rapid absorption of digested food into blood stream. The undigested part of food then passes into wider tube H which absorbs most of the water from undigested food. The last part of tube H called I stores this undigested food (or waste) for some time. The undigested food is then passed out though opening J as faeces in the process known as K.
(a) Name the organ A.
Answer : Small intestine
(b) Name (i) liquid B, and (ii) organ C.
Answer : (i) Bile (ii) Gall bladder
(c) What are the digestive enzymes D, E and F ?
Answer : Pancreatic amylase, Trypsin and Lipase
(d) Name the projections G present on the inner wall of organ A.
Answer : Villi
(e) Name (i) tube H (ii) part I (iii) opening J, and (iv) process K.
Answer : (i) Large intestine (ii) Rectum (iii) Anus (iv) Egestion
Question. A unicellular animal P having no fixed shape ingests a food particle by forming temporary finger-like projections Q. The food particle is engulfed with a little surrounding water to form a temporary stomach R inside it. The chemicals S from surrounding cytoplasm enter into R and break down food into small and soluble molecules by chemical reactions. The digested food is absorbed directly into cytoplasm by the process T. The undigested food is thrown out of the body by the rupture of a cell organelle U in a process called V.
(a) Name the unicellular animal P.
Answer : Amoeba
(b) What are (i) Q, and (ii) R ?
Answer : (i) Pseudopodia (ii) Food vacuole
(c) Name (i) chemical S, and (ii) process T.
Answer : (i) Enzymes (ii) Diffusion
(d) Name (i) organelle U, and (ii) process V.
Answer : (i) Cell membrane (ii) Egestion
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Chapter 6 Life Processes CBSE Class 10 Science Worksheet
The above practice worksheet for Chapter 6 Life Processes has been designed as per the current syllabus for Class 10 Science released by CBSE. Students studying in Class 10 can easily download in Pdf format and practice the questions and answers given in the above practice worksheet for Class 10 Science on a daily basis. All the latest practice worksheets with solutions have been developed for Science by referring to the most important and regularly asked topics that the students should learn and practice to get better scores in their examinations. Studiestoday is the best portal for Printable Worksheets for Class 10 Science students to get all the latest study material free of cost. Teachers of studiestoday have referred to the NCERT book for Class 10 Science to develop the Science Class 10 worksheet. After solving the questions given in the practice sheet which have been developed as per the latest course books also refer to the NCERT solutions for Class 10 Science designed by our teachers. After solving these you should also refer to Class 10 Science MCQ Test for the same chapter. We have also provided a lot of other Worksheets for Class 10 Science which you can use to further make yourself better in Science.
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