Answer the Following Question. in the Experimental Set up to Show that "Co2 is Given Out During Respiration", Name the Substance Taken in the Small Test Tube Kept in the Conical Flask. State Its Func - Science

Short Note

Answer the following question.
In the experimental set up to show that "CO2 is given out during respiration", name the substance taken in the small test tube kept in the conical flask. State its function and the consequence of its use.



In the above mentioned experimental setup, lime water is taken in a small test tube which is kept in the conical flask. Lime water is used to detect the presence of carbon dioxide. When carbon dioxide passes through lime water, it turns milky due to the formation of calcium carbonate. Hence, it is used in the above experiment to check whether CO2 is released during respiration.

Concept: Respiration
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2018-2019 (March) 31/1/3


How are oxygen and carbon dioxide transported in human beings?

Describe the process of respiration in the following part of a plant:


Name the energy currency in the living organisms. When and where is it produced?

Which of the following is not produced during anaerobic respiration in unicellular fungus?

Internal respiration may be defined as:

During marathon, we sometimes get painful contractions of leg muscles due to the accumulation of one of the following in leg muscles. This is:

A, B and C are three living organisms. The organism A is a unicellullar fungus which can live without air. It is used in the commercial production of an organic compound P from molasses. The organism B is a unicellular animal which lives in water and feeds and moves by using pseudopodia. It breathes through an organelle Q. The organism C is a tiny animal which acts as a carrier of malarial parasite. It breathes and respires through a kind of tiny holes R and air-tubes S in its body.

(a) What are organisms (i) A (ii) B, and (iii) C?
(b) Name (i) P (ii) Q (iii) R, and (iv) S.
(c) Which organism/organisms undergo aerobic respiration?
(d) Which organism/organisms undergo anaerobic respiration?

Veins and arteries carry blood. Which of these carry blood away from the heart?

Out of xylem and phloem, which one carries materials upwards as well as downwards?

Answer this question.

Name the organ of respiration in fishes.

Answer this question.

What are the holes on the sides of the body of insects called?

Answer the following in one word.  

What is the muscular sheet below the lungs called?

Tick the most appropriate answer. 

 The products of respiration are :

Differentiate between 

External respiration and Internal respiration 

Answer the following in short.

Define respiration. 

Answer the following in detail.

How is the process of cellular respiration different from breathing?

Answer the following in detail.

Explain the process of Cellular Respiration.

Draw a diagram of the human respiratory system and label - pharynx, trachea, lungs, diaphragm and alveolar sac on it.

____________ refers to a biochemical process of oxidation of organic compounds in an orderly manner for the liberation of chemical energy in the form of ATP.

Respiration refers to ____________.

Identify the CORRECT sequence of events for the transport of respiratory gases.

Complete the analogy.

Transport of CO2 by plasma : 7% :: Transport of CO2 by bicarbonate ions: ____________.

The major fraction of CO2 released during cellular respiration is transported by the blood to the lung capillaries ______

term 'respiration' includes

What percent of oxygen is transported in a dissolved state by the plasma?

With which of the following haemoglobin combines to form carboxyhaemoglobin?

What is the ppCO2 in alveolar air?

______ refers to the physical process by which gaseous exchange takes place between the atmosphere and the lungs.

The partial pressure of oxygen of blood in pulmonary capillaries is i ______  mrnHg while in alveolar air it is ii ______ mmHg.

How much percent of C02 is transported in a dissolved form as carbonic acid?

____________ is necessary for the respiration in plant.

Sometimes when we do heavy exercise, anaerobic respiration takes place in our muscle cells. What is produced during this process?

Yeast is used in wine and beer industries because it respires

During the process of exhalation, the ribs move

Mark the following statement as True or False. Correct the false statement.

Exhaled air has more percentage of CO2 than inhaled air

Observe Figure 10.2 carefully and answer the following questions.

  1. Which process is being tested in the activity?
  2. What is the result of the activity? Give reasons.

The oxygen dissociation curve is a sigmoid curve and it shifts towards the right due to ______.

Match the correct answers with the type of respiration and respiratory substances.

Respiration Types of Substrates
A. Floating respiration I. Proteins
B. Cytoplasmic respiration II. Glucose
C. Protoplasmic respiration III. Carbohydrates and fats


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