Advertisements
Advertisements
प्रश्न
An organism X having breathing organs A lives on land. When organism X goes underwater, it cannot survive for a long time unless carrying an oxygen cylinder. On the other hand, the organism Y having breathing organs B always lives in water and if taken out of the water, it dies after a short while. A third organism Z having breathing organs C and D which lives on the banks of ponds, lakes, and rivers can survive on land as well as in water equally well.
(a) What could organism X be? Name the breathing organs A.
(b) What could organism Y be? Name the breathing organs B.
(c) What could organism Z be? Name the breathing organs C and D.
(d) Out of X, Y, and Z, which organism is (i) amphibian, (ii) aquatic, and (iii)
terrestrial?
Advertisements
उत्तर
(a) Organism X could be a human being. The breathing organs A are lungs.
(b) Organism Y could be a fish. The breathing organs B are gills.
(c) Organism Z could be a frog. The breathing organ C is skin and D are the lungs.
(d) (i) Z is an amphibian. (ii) Y is an aquatic organism. (iii) X is a terrestrial organism.
APPEARS IN
संबंधित प्रश्न
How are the lungs designed in human beings to maximize the area for exchange of gases?
State whether the following statement is true or false:
Energy can be produced in cells without oxygen.
Fill in the following blank with suitable word:
The organs of respiration in man are the _____________.
Explain why, it is dangerous to inhale air containing carbon monoxide.
Describe the process of respiration in the following part of a plant:
Root
Why is the rate of breathing in aquatic organisms much faster than in terrestrial organisms?
"Respiration is a vital function of the body". Justify this statements.
Which of the following is the correct sequence of air passage during inhalation?
(a) nostrils → larynx → pharynx → trachea → lungs
(b) nasal passage → trachea → pharynx → larynx → alveoli
(c) larynx → nostrils → pharynx → lungs
(d) nostrils → pharynx → larynx → trachea → alevoli
Which of the following is most likely to have a much higher breathing rate?
Veins and arteries carry blood. Which of these carry blood away from the heart?
Veins and arteries carry blood. Which of these carry blood back to the heart?
Name the body structure concerned with the given functional activity:
Transports oxygen to the body cells.
Given below is an example of certain structure and its special functional activity:
"Kidney and excretion".
Fill in the blanks on a similar pattern.
Mitochondria and _____________.
Rewrite the following statement by selecting the correct option.
During respiration, ____________ gas is given out.
Answer the following question.
How is O2 and CO2 transported in human beings?
Respiration refers to ____________.
______ refers to the physical process by which gaseous exchange takes place between the atmosphere and the lungs.
Lack of oxygen in muscles often leads to cramps among cricketers. This results due to:
Observe the figure carefully and answer the following questions.
- Which process is being tested in the activity?
- 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 ______.
