CBSE Class 10 Biology Life Processes Respiration Worksheet Set A

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

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Class 10 Science Chapter 6 Life Processes Worksheet Pdf

 

LIFE PROCESSES- RESPIRATION

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

 
1. Name the respiratory organs of: (i) Mosquito, (ii) Earthworm, (iii) Fish.
 
2. Which organelle in a cell is associated with the production of energy by aerobic respiration?
 
3. What are the common features of the respiratory organs in aquatic and terrestrial animals?
 
4. Write the chemical equations for aerobic respiration and anaerobic respiration.
 
5. Explain the process of break down of glucose in a cell (i) in the presence of oxygen (ii) in the absence of oxygen.
 
6. State the role of the following in the human respiratory system (i) Nasal cavity, (ii) Diaphragm, (iii) Alveoli
 
7. Give reason for the following:
 
(i) Glottis is covered by epiglottis, (ii) Lung alveoli are  covered with blood capillaries, (iii) The wall of trachea is supported by cartilage rings.
 
8. (a) Draw the diagram of human respiratory system and label the following parts.
 
(i) Pharynx    (ii) Trachea    (iii) Diaphragm    (iv) Rings of cartilage
 
(b) How are lungs designed in human beings to maximise the area for exchange of gases?
 
9. Which is the universal source of energy in all cells?
 
10. Which pathway is common to both aerobic and anaerobic respiration?
 
11. Why is respiration considered an exothermic process?
 
12. What is breathing?
 
13. How do plants exchange gases?
 
14. How is respiration different in plants and animals?
 
15. Differentiate between respiration and breathing.

 

Please click on below link to download CBSE Class 10 Biology Life Processes Respiration Worksheet Set A

Chapter 06 Life Processes
CBSE Class 10 Biology Excretion Set A
CBSE Class 10 Biology Excretion Set B
CBSE Class 10 Biology Excretion Set C
CBSE Class 10 Biology Heterotrophic Nutrition Worksheet Set A
CBSE Class 10 Biology Heterotrophic Nutrition Worksheet Set B
CBSE Class 10 Biology Life Processes Nutrition In Animals Worksheet
CBSE Class 10 Biology Life Processes Nutrition In Plants Worksheet
CBSE Class 10 Biology Life Processes Nutrition Worksheet Set A
CBSE Class 10 Biology Life Processes Nutrition Worksheet Set B
CBSE Class 10 Biology Life Processes Nutrition Worksheet Set C
CBSE Class 10 Biology Life Processes Nutrition Worksheet Set D
CBSE Class 10 Biology Life Processes Reference Materials Worksheet
CBSE Class 10 Biology Life Processes Respiration In Animals Worksheet
CBSE Class 10 Biology Life Processes Respiration Worksheet Set A
CBSE Class 10 Biology Life Processes Respiration Worksheet Set B
CBSE Class 10 Biology Life Processes Respiration Worksheet Set C
CBSE Class 10 Biology Life Processes Respiration Worksheet Set D
CBSE Class 10 Biology Life Processes Transporation Worksheet Set A
CBSE Class 10 Biology Life Processes Transporation Worksheet Set B
CBSE Class 10 Biology Life Processes Transporation Worksheet Set C
CBSE Class 10 Biology Life Processes Transporation Worksheet Set D
CBSE Class 10 Biology Life Processes Worksheet
CBSE Class 10 Biology Life Processes Worksheet Set A
CBSE Class 10 Biology Life Processes Worksheet Set B
CBSE Class 10 Biology Life Processes Worksheet Set C
CBSE Class 10 Biology Life Processes Worksheet Set D
CBSE Class 10 Biology Life Processes Worksheet Set E
Chapter 09 Heredity and Evolution
CBSE Class 10 Biology Heredity And Evolution Set D
Chapter 13 Magnetic Effects of Electric Current
CBSE Class 10 Physics Magnetic Effects of Electric Current Worksheet Set E

Chapter 6 Life Processes CBSE Class 10 Science Worksheet

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