CBSE Class 10 Biology Life Processes Respiration In Animals Worksheet

 

Question. Fruits kept in refrigerator maintain their flavour and taste for longer period due to :
(A) Non - availability of O₂
(B) Presence of excess CO₂
(C) Slowing down of respiration
(D) Presence of excess moisture
Answer : B

Question. No respiratory pigment is found in :
(A) Cockroach
(B) Earthworm
(C) Rabbit
(D) Frog
Answer : A

Question. The shortest part of respiratory system is
(A) Trachea
(B) pharynx
(C) Larynx
(D) Bronchi.
Answer : B

Question. The pyruvic acid formed during glycolysis is oxidised to CO₂ and H₂O in a cycle called
(A) Calvin cycle
(B) nitrogen cycle
(C) Hill cycle
(D) Krebs' cycle
Answer : D

Question. Cardiac notch is found on :
(A) Right lung
(B) Left lung
(C) Diaphragm
(D) None of the above
Answer : B

Question. During inspiration, air passes into lungs due to :
(A) Increase in volume of thoracic cavity and fall in lung pressure
(B) Fall in pressure inside the lungs
(C) Increased volume of thoracic cavity
(D) Muscular expansion of lungs
Answer : A

Question. Which reaction take place in Mitochondria ?
(A) Oxidative phosphorylation
(B) Photolysis
(C) Photophosphorylation
(D) Starch synthesis
Answer : A

Question. Kreb’s Cycle takes place in : 
(A) Cytoplasm
(B) Mitochondria
(C) Nucleus
(D) Ribosome
Answer : B

Question. R.Q. for glucose is
(A) 1
(B) 0.5
(C) 2
(D) 0.05
Answer : A

Question. Anaerobic respiration in human body occurs inside :
(A) Liver
(B) White muscles
(C) Red muscles
(D) Kidney
Answer : D

Question. Rings of cartilage are present in the following :
(A) Oesophagus
(B) Trachea
(C) Throat
(D) Duodenum
Answer : B

Question. Which scientist discovered “Tricarboxylic acid” cycle ? 
(A) Krab
(B) Watson and Crick
(C) Sanger
(D) Edison
Answer : A

Question. The lungs of early bony fishes evolved into swim bladders. This change had the primary effect of :
(A) Improving feeding efficiency
(B) Supplementing gill respiration
(C) Aiding reproduction
(D) Providing buoyancy
Answer : D

Question. Higher concentration of CO₂ causes :
(A) Low transport of O₂ in blood
(B) Low diffusion of O₂ in blood
(C) Quick diffusion of O₂
(D) All of these
Answer : C

Question. EMP is _______.
(A) Glycolysis
(B) Kreb’s cycle
(C) ETS
(D) Fermentation
Answer : A

Question. The end product of glycolysis is :
(A) Phosphoric acid
(B) Malic acid
(C) Pyruvic acid
(D) Fumaric acid
Answer : C

Question. The sequence of process related with respiration is
(A) Kreb’s cycle Glycolysis Electrontransport system
(B) Glycolysis Kreb’s cycle Electrontransport system
(C) Electrontransport system Kreb’s cycle Glycolysis
(D) None of above
Answer : B

Question. During lack of oxygen in tissues of our body, the pyruvate is converted into lactic acid in :
(A) Mitochondria
(B) Nucleus
(C) Cytoplasm
(D) Ribosome
Answer : C

Question. Where is the Gaseous exchange takes place during respiration in human being ?
(A) Alveoli
(B) Pharynx
(C) Larophaynx
(D) Trachea
Answer : A

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