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Wednesday 15 April 2020

Assignment for X(note down in your notebook)

Q1 What is the source of Oxygen released during respiration?
Ans. Water splits to release oxygen which is released out from stomata.

Q2 What are the features of respiratory surface
Ans Features of respiratory surface 
(1)Thin surface 
(2)Large surface area
(3)Rich supply of blood

Q3 What is the role of haemoglobin ?
A It is a fast acceptor of oxygen and helps the blood to quickly exchange gases.

Q4 What is the role of stomata?
A Role of stomata
(1)Exchange of gases
(2)Transpiration

Q5Name the cells in which following take place
(1)Aerobic respiration 
(2)Lactic acid formation
(3)Fermentation
A
 (1)Eukaryotic cells e.g.plant and animal cells
(2)voluntary Muscle cell
(3)Yeast ,bacteria

Q6 Role of following 
(1)Diaphragm
(2)Cartilagenous rings in trachea
(3)Epiglottis
(4)Alveoli
(5)Larynx
(6)Rib cage
A
(1)Separates thorax and abdomen, helps in breathing
(2)Prevents trachea from collapsing when there is no air
(3)prevents food and water from entering wind pipe
(4)exchange of gases takes place
(5)voice box has muscular flaps which vibratesto produce voice
(6)Protects heart and lungs .

Q7What is the function of blood?
A Blood is a fluid connective tissue.
Four components 
RBC Carry haemoglobin which distributes oxygen to the whole body
WBC engulfs foreign material and helps in providing immunity and defense
Plasma carry all the Food ,Enzyme ,Hormones,to body and collects waste from body
Platelets Help in clotting of blood to prevent blood loss during any injury.

91 comments:

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