Thai Sikh International School
E-Learning Programme – Online
Assignment – 09/05/2014
Name
: Subject : Biology
Year :10A&B Week
No. : 12
1.Define
the term excretion.
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2. Name
two human excretory organs.
Identify two substances
that each organ excretes.
Organ
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substances excreted
1.----------------------------------------------------------------------------
2.------------------------------------------------------------------------
organ --------------------------------------------------------------------------------------
substances
excreted
1.--------------------------------------------------------------------------
2.-------------------------------------------------------------------------
(c) Green
plants are living organisms and excrete substances.
Suggest one substance that plants excrete
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4.In the human body, the
amounts of different substances, such as water, remain
within narrow limits.
Name the term used to
describe the maintenance of a constant internal environment
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5. The
kidney excretes excess water.
State three other processes that occur in the kidney.
1.-----------------------------------------------------------------------------------------------------
2.-------------------------------------------------------------------------------------------------
3.---------------------------------------------------------------------------------------------------
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