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प्रश्न
Why is the rate of breathing in aquatic organisms much faster than in terrestrial organisms?
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उत्तर
Aquatic species breathe more quicker than terrestrial organisms because oxygen supply in water is lower than on land, hence aquatic organisms must work harder to collect the oxygen they require.
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संबंधित प्रश्न
The diagram given below shows the male urinogenital system of a human being. Study the diagram and answer the questions that follow:

(i) Label the parts numbered 1 to 8.
(ii) Name the corresponding structure of part (4) in female reproductive system.
(iii) What is the role of part 7?
Name a waste gas released by the plants only during the daytime.
What job is done by the kidneys?
Explain the principle of dialysis with the help of a labelled diagram.
The excretory organs in an earthworm are:
(a) nephridia
(b) nephrons
(c) raphides
(d) ureters
Answer the following in short.
What is excretion?
Answer the following in detail.
Explain the process of transpiration. Describe some factors that affect it.
Define the following term:
Osmoregulation
Explain in your own words with suitable examples.
How is excretion in plants useful to human beings?
Choose the odd one out in the following series:
Renal fat, renal capsule, nerve.
The following diagram represents a mammalian kidney tubule (nephron) and its blood supply.

Parts indicated by the guidelines 1to 8 are as follows:
1. Afferent arteriole from renal artery
2. Efferent arteriole
3. Bowman's capsule
4. Glomerulus
5. Proximal convoluted tubule with blood capillaries
6. Distal convoluted tubule with blood capillaries
7. Collecting tubule
8. U-shaped loop of Henle
Study the diagram and answer the question that follow:
Which structure contains the lowest concentration of urea?
Complete the following sentence with appropriate word:
Human kidney is made up of ______.
Write the functional activity of the following structure: Aldosterone
Choose the Odd One Out:
Identify the INCORRECT match.
The mode of excretion of nitrogenous wastes like ammonia which takes place by simple diffusion is called ______.
Bilirubin and Biliverdin are pigments which are ____________.
Among the following animals, the best conserver of water is ______.
Explain the importance of soil for plant growth.
The main nitrogenous waste formed in the human body:
