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प्रश्न
What advantage over an aquatic organism does a terrestrial organism have with regard to obtaining oxygen for respiration?
उत्तर १
Terrestrial organisms take up oxygen from the atmosphere whereas aquatic animals obtain oxygen from water. Air contains more O2 as compared to water. Since the content of O2 in air is high, the terrestrial animals do not have to breathe faster to get more oxygen. Therefore, unlike aquatic animals, terrestrial animals do not need adaptations for gaseous exchange.
उत्तर २
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संबंधित प्रश्न
State whether the statement is true or false:
Aquatic animals breathe at a slower rate than the terrestrial animals.
Compare the functioning of alveoli in the lungs and nephrons in the kidneys with respect to their structure and functioning.
Given below is a square of letters in which are hidden different words related to respiration in organisms. These words may be present in any direction − upwards, downwards, or along the diagonals. Find the words for your respiratory system. Clues about those words are given below the square.
- The air tubes of insects
- Skeletal structures surrounding chest cavity
- Muscular floor of chest cavity
- Tiny pores on the surface of leaf
- Small openings on the sides of the body of an insect
- The respiratory organs of human beings
- The openings through which we inhale
- An anaerobic organism
- An organism with tracheal system
Mention any two components of blood.
Where does the blood absorb oxygen in the human body?
State whether the following statement is true or false:
during respiration, the plants take CO2 and release O2.
Fill in the following blank with suitable word:
The actual exchange of gases takes place in the ___________ of the lungs.
Name the type of respiration in which the end product is:
C2H5OH and CO2
Give one example where such a respiration can occur.
Why do fishes die when taken out of water?
Why is the rate of breathing in aquatic organisms much faster than in terrestrial organisms?
Name the energy currency in the living organisms. When and where is it produced?
Which of the following is correct for the process of anaerobic respiration?
| Carbon dioxide always produced | A lot of energy released | |
| (a) | No | Yes |
| (b) | No | No |
| (c) | Yes | No |
| (d) | Yes | Yes |
The breathing and respiration in woody stem of a plant takes place through:
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?
When a person breathes in the air, the air enters into his body through an organ A having two holes B in it. The air then passes through the pharynx and larynx and enters into tube C. The tube C divides into two smaller tubes D at its lower end. The two smaller tubes are attached to two respiratory organs E. Each smaller tube divides inside the organs E to form a large number of still smaller tubes called F. The smallest tubes F have air-sacs G at their ends in which gaseous exchange takes place in the body of the person. What are A, B, C, D, E, F, and G?
What is the name of tissues which transport:
water and minerals in a plant?
Veins and arteries carry blood. Which of these carry blood away from the heart?
Choose the odd one out in each of the following groups of four items each:
Oxyhaemoglobin, Carbaminohaemoglobin, Hypoxia, Carboxyhaemoglobin
Choose the odd one out in the following groups of four items each:
Hairy, Moist, Nostril, Vocal cord
What is the normal percentage composition of gases in inspired and expired air respectively?
State one function of the following:
Ciliated epithelium lining the respiratory tract
State one function of the following:
Diaphragm
Match the items in Column A with those in Column B.
|
Column A |
Column B |
|
Cartilaginous |
Epiglottis |
|
Large surface area |
Diaphragm |
|
Breathing movements |
Bronchi |
|
Voice |
Alveoli |
|
Complemental air |
Larynx |
|
Swallowing |
Extra inhalation |
Answer the following question.
A gas is released during photosynthesis. Name the gas and also state the way by which the gas is evolved.
Name the organs that bring about respiration.
Air that enters through the nose passes into this tube.
____________ 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.
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: ____________.
Sometimes we get painful cramps in our leg muscles after running for a long time due to the accumulation of:
What is common between extensive network of blood vessels around walls of alveoli and in glomerulus of nephron?
Which of the following statement(s) is (are) true about respiration?
- During inhalation, ribs move inward and the diaphragm is raised
- In the alveoli, exchange of gases takes place i.e., oxygen from alveolar air diffuses into blood and carbon dioxide from the blood into the alveolar air
- Haemoglobin has a greater affinity for carbon dioxide than oxygen
- Alveoli increase surface area for the exchange of gases
During respiration exchange of gases take place in
Name the energy currency in the living organisms. When and where is it produced?
Yeast is used in wine and beer industries because it respires
Breathing is a process that
- provides O2 to the body.
- breaks down food to release energy.
- helps the body to get rid of CO2.
- produces water in the cells.
Which of the following gives the correct combination of functions of breathing?
