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Question
Answer the following in short.
What is excretion?
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Solution
The process of removing waste, formed as a result of chemical reactions in the body is called excretion.
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RELATED QUESTIONS
The substance which is not reabsorbed into the blood capillaries surrounding the tuble of a nephron is mainly:
(a) glucose
(b) amino acid
(c) urea
(d) water
Put a tick mark (✓) against the most appropriate alternative in the following statement :
In human beings, urea is produced in :
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Define transpiration in plants.
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The outer region of kidney containing the Bowman's capsule.
Write down the functional activity of the following parts,
Henle's loop ………………
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 (normally) contains the lowest concentration of glucose?
The habitat of animals that excrete nitrogenous waste in the form of urea.
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Nitrogenous waste
Give two examples of the following:
Water-soluble vitamins
