Advertisements
Advertisements
Question
Why do fishes die when taken out of water?
Solution
Fish do not have lungs that can utilise the oxygen of the air for breathing and respiration. The fish have gills. Gills can only extract the dissolved oxygen from water and provide it to the fish. Gills cannot take in the oxygen from the air. Since fish do not get oxygen for breathing when taken out of water, they die.
APPEARS IN
RELATED QUESTIONS
How are oxygen and carbon dioxide transported in human beings?
What would be the consequences of a deficiency of haemoglobin in our bodies?
Compare the functioning of alveoli in the lungs and nephrons in the kidneys with respect to their structure and functioning.
The trachea divides into tow tubes at its lower end. What is the name of these tubes?
What is the other name of wind-pipe?
Explain why, a land plant may die if its roots remain waterlogged for a long time.
Name the type of respiration in which the end product is:
C2H5OH and CO2
Give one example where such a respiration can occur.
Define breathing. State the differences between breathing and respiration.
Which of the following statements are true about respiration?
(i) during inhalation, ribs move inward and diaphragm is raised.
(ii) the gaseous exchange takes place in the alveoli.
(iii) haemoglobin has greater affinity for carbon dioxide than oxygen.
(iv) alveoli increase surface area of the exchange of gases
In cockroaches, air enters the body through:
There are five animals P, Q, R, S and T. The animal P always lives in water and has gills for breathing. The animal Q can stay in water as well as on land and can breathe both, through moist skin and lungs. The animal R lives in soil and breathes only through its skin. The animal S lives on land and breathes through spiracles and tracheae. And animal T lives in water and breathes through its cell membrane.
(a) Which of the animals could be Amoeba?
(b) Which of the animals could be frog?
(c) Which animal could be fish?
(d) Which animal could be grasshopper?
(e) Which animal could be earthworm?
Fill in the following blanks with suitable words:
The ___________ blood cells make antibodies whereas ___________ blood cells help in respiration.
Veins and arteries carry blood. Which of these carry blood back to the heart?
Answer the following in detail.
How is the process of cellular respiration different from breathing?
Choose the odd one out in the following groups of four items each:
Trachea, Bronchus, Alveolus, Diaphragm
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.
Epiglottis and _____________.
Given below is an example of certain structure and its special functional activity:
"Kidney and excretion".
Fill in the blanks on a similar pattern.
Diaphragm and _____________.
Given below is an example of certain structure and its special functional activity:
"Kidney and excretion".
Fill in the blanks on a similar pattern.
'C' shaped cartilage rings and ____________.
How does aerobic respiration differ from anaerobic respiration?
