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प्रश्न
Given below is an example of certain structure and its special functional activity:
"Kidney and excretion".
Fill in the blanks on a similar pattern.
Alveoli and _____________.
उत्तर
Alveoli and gaseous diffusion.
APPEARS IN
संबंधित प्रश्न
Carbon dioxide enters into the leaves through tiny pores present on the surface of the leaf called _________.
(a) chlorophyll
(b) chloroplast
(c) stomata
(d) epidermis
Cellular respiration takes place in
(a) Lysosome
(b) Chlorophyll
(c) Mitochondria
(d) Ribosome
How are the alveoli designed to maximise the exchange of gases?
If a plant is releasing carbon dioxide and taking in oxygen during the day, does it mean that there is no photosynthesis occurring? Justify your answer.
Where in the lungs does gas exchange take place?
State whether the following statement is true or false:
Fish and earthworm exchange gases during respiration in the same way.
What type of respiration takes place in human muscles during vigorous physical exercise? Give reason for your answer
From where do the aquatic animals and terrestrial animals obtain oxygen for breathing and respiration?
Why is the rate of breathing in aquatic organisms much faster than in terrestrial organisms?
Draw a labelled diagram of the human respiratory system.
Describe the exchange of gases which takes place in the leaves of a plant
(a) during daytime, and (b) at night.
What type of repiration takes place in yeast?
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 |
When air is blown from mouth into a test-tube containing lime water, the lime water turns milky due to the presence of:
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?
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?
Veins and arteries carry blood. Which of these carry blood away from the heart?
Fill in the following blanks with suitable words:
The ___________ blood cells make antibodies whereas ___________ blood cells help in respiration.
An animal in which the oxygenation of blood does not take place in the lungs is:
Veins and arteries carry blood. Which of these carry blood back to the heart?
Answer the following in one word.
What is the muscular sheet below the lungs called?
Choose the odd one out in the following groups of four items each:
Ethyl alcohol, Carbon dioxide, Starch, Oxygen
Match the items in Column I with the ones most appropriate in Column II. Rewrite the matching pairs.
|
Column I |
Column II |
|
(a) Alveoli |
(i) where aerobic respiration takes place |
|
(b) Bronchioles |
(ii) lined with hair |
|
(c) Nasal Chamber |
(iii) diffusion of gases |
|
(d) Bronchi |
(iv) small air tubes |
|
(v) an inverted Y shaped tube |
|
|
(vi) a common passage for food and air |
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 _____________.
State one function of the following:
Intercostal muscles
Give suitable explanation for the following :
Why does a person feel breathlessness at higher altitudes?
Respiration refers to ____________.
Glycolysis process occurs in which part of the cell?
During respiration exchange of gases take place in
During the process of exhalation, the ribs move
