Arihant - Class X - Life Processes : Respiration[ (Chapter - 6 (b) ]Contact Number: 8527521718Arihant - Class X - Life Processes : Respiration[ (Chapter - 6 (b) ]Contact Number: 8527521718What advantage over an aquatic organism does a terrestrial organism have with regard to obtaining oxygen for respiration?
What are the different ways in which glucose is oxidised to provide energy in various organisms?
How is oxygen and carbon dioxide transported in human beings?
How are the lungs (alveoli) designed in human beings to maximise the area for exchange of gases?
The breakdown of pyruvate to give carbon dioxide, water and energy takes place in
1. cytoplasm
2. mitochondria
3. chloroplast
4. nucleus
What are the differences between aerobic and anaerobic respiration? Name some organisms that use the anaerobic mode of respiration.
How are the alveoli designed to maximise the exchange of gases?
Name the cell organelle in which breakdown of pyruvate to give CO2, water and energy takes place.
In which organelle of cell does respiration occur?
It is seen that during aerobic respiration more energy is released as compared? to the anaerobic respiration. Why is it so?
Name the intermediate and end products of breakdown of glucose in aerobic respiration.
Hard and woody stems of trees do not have stomata. How does gaseous exchange take place in them?
How do roots absorb oxygen?
From the list of animals given below, identify the most likely one to have a much higher breathing rate?
Dog, Cat, Fish, Pigeon, Rat.
Apart from lungs, terrestrial animals employ other respiratory organs or surfaces for respiration. Name two such organs and the organisms using them.
Why does the air passage not collapse when there is no air in it?
Or
When we breathe out, why does the air passage not collapse?
During breathing cycle, what is the advantage of residual volume of are in lungs? Explain.
When a cell is provided with adequate supply of oxygen, which respiration process will it follow?
Give the path travelled by a molecule of oxygen when it enters the body.
Why carbon dioxide is mostly transported in dissolved form?
What are the end products formed during fermentation in yeast? Under what conditions a similar process takes place in our body that leads to muscle cramps?
Fermentation is a form of anaerobic reaction. Explain.
Name the energy currency in the living organisms. When and where is it produced?
What happens to the breathing rate during vigorous exercise?
What are the common features of the respiratory organs in aquatic and terrestrial animals?
Why do aquatic animals breathe faster than the terrestrial animals?
Why do fishes die when taken out of water?
State in brief the role of lungs in the exchange of gases.
Give reasons.
(i) Rings of cartilage are present in trachea.
(ii) Lungs always contain a residual volume of air.
The diagram given below shows the lung. Which structure will contract while inhalation takes place?
The breathing cycle is rhythmic, whereas exchange of gases is a continuous process. Comment upon this statement.
Diffusion alone can supply all cells of a plant with oxygen. Is it true? If yes, give reason.
Draw a flowchart to show the breakdown of glucose by various pathways.
Or
Explain the process of breakdown of glucose in a cell,
(i) in the presence of oxygen.
(ii) in the absence of oxygen.
(i) A product is formed in the cytoplasm of our muscles due to breakdown of glucose when there is a lack of oxygen. Name the product
and also mention the effect of build up of this product.
(ii) Differentiate between fermentation in yeast and aerobic respiration on the basis of end products formed.
What is the logic behind the heavy breathing as we climb up a mountain?
State one word for the following:
(i) Mechanism for moving the air in and out of the body.
(ii) Structure in plants to facilitate gaseous exchange.
(iii) Respiratory organ in aquatic organisms.
State the role of the following in human respiratory system.
(i) Nasal haris
(ii) Diaphragm
(iii) Alveoli
(iv) Nasal cavity
Identify the parts correctly matched with description given below.
(i) Small pores present in woody plants for gaseous exchange.
(ii) Respiratory surface in humans.
(iii) Respiratory surface of earthworms.
(iv) Primary organ of respiration.
(v) Cartilaginous flap.
(vi) Contraction and relaxation of these changes the thoracic volume.
What is the role of respiratory pigment in respiration? Give one example.
(i) Haemoglobin plays an essential role of being a respiratory pigment in human beings. Justify this statement.
(ii) What is the order of the following three structures according to size, with the largest diameter air passage first?
Trachea, Bronchus, Bronchiole.
What are the different ways in which glucose is oxides to provide energy in various organisms?
Or
Explain the three pathways of breakdown of glucose in lving organisms.
During respiration in an organism A, one molecule of glucose produces 2 ATP molecules whereas in respiration of another organism B, one molecule of glucose Produces 38 ATP molecules.
(i) Which organism is undergoing aerobic respiration?
(ii) Which organism is undergoing anaerobic respiration?
(iii) Which type of organism A or B can convert glucose into alcohol?
(iv) Name one organism which behaves like A.
(v) Name one organism which behaves like B.
Describe the process of breathing in human beings.
Draw a diagram of respiratory system and label the following.
(i) Part through which air is taken in.
(ii) Part which protects the lungs.
(iii) Part which carries the air into the lungs.
Or
(i) Part where air is filtered by fine hairs and mucus.
(ii) Part which terminates in balloon-like structure.
(iii) Balloon-like structures where exchange of gases takes place.
(iv) Part which separates chest cavity from abdominal cavity.
Or
(i) Organ that is surrounded by cartilaginous rings.
(ii) Structure where exchange of gases takes place.
(iii) Voice box
(iv) Muscular structure which flattens during inhalation.
The diagrams of the thorax given below show the mechanisms involved during breathing.
(i) Which phase of breathing does diagram A and B each represent?
(ii) List the structures through which air passes in diagram A.
(iii) If the atmospheric pressure is 760 mm Hg, what would you expect the alveolar air pressure in diagram B to be? Explain your answer.
(iv) Describe three ways in which the alveoli are adapted for efficient gaseous exchange.
Give the name of the following:
(i) Organ that produces sound.
(ii) Actual diffusion site of O2 and CO2 in humans.
(iii) Product of alcoholic fermentation.
(iv) Painful contraction of muscles.
(v) Biochemical oxidation of organic compound in body.
(vi) Compound formed by Hb + CO.
(vii) Pores in leaf for CO2 exchange.
(viii) Site of aerobic respiration.
(ix) Organism respiring through spiracles.
(x) Also known as windpipe.
According to you by what mechanism our lungs are provided with a continuous supply of clean, atmospheric air? Comment.
The apparatus shown below is setup for a respiration expirement.
What inference can be drawn from this experiment?
Rinku wanted to carry out the experiment to show that carbon dioxide is given out during respiration. Which other chemical according to you can be used other than water?
In the test tube A and B shown below, yeast was kept in sugar solution. Which products of respiration would you expect in test tubes A
and B?
Anju observed her mother preparing batter for a dish. She noted that her mother added yeast powder to the dough and left it for overnight. She got curious and asked her teacher questions about the same, next day.
Read the passage and answer the following questions.
(i) Why was yeast powder added to the dough?
(ii) What type of reaction do you observe in this case? What are the end products?
(iii) Suggest the values shown by Anju.
Aashima participated in the zonal relay race competition. During the practice session, she got cramps in her muscles.
Her mother got worried and took her to a doctor, who told them that there is nothing to worry and explained them the actual reason behind it. Based on the above text, answer the following questions.
(i) Why Aashima got cramps in her muscles?
(ii) Write the pathway involved in this process.
(iii) What values were shown by Aashima's mother?
Sahil potted two plants as pot A and pot B. The difference in the pots was that all the leaves of plant in pot A were covered with a black paper, while the leaves of plant in pot B with a transparent paper. After a week, he observed both plants and found some major differences between them.
Read the passage and answer the following questions.
(i) What did Sahil observed after a weak?
(ii) Give reason for the observed made by Sahil.
(iii) What are the values shown by Sahil?