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Secondary One Secondary One Integrated ScienceIntegrated ScienceUnit 2Looking at living things
2.1 Characteristics of living things
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Nov-2010
What is a living thing?What is a living thing?Are you living thing?Why do you think so?
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How do scientists define living How do scientists define living things? things? Seven characteristics
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Let’s watch a video Let’s watch a video first……first……http://www.youtube.com/watch?v
=FkmxyX9PgkY
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Please pay
attention to the video!
What do you learn from the What do you learn from the video?video?
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1.Eating2.Movement3.Breathing4.Waste Removal5.Growth6.Sensitivity7.Reproduction
Do you think plant is living Do you think plant is living thing?thing?
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Let’s go through the Let’s go through the characteristics one by one.characteristics one by one.Textbook P.64-66 Classroom
Activity 2.2
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11stst characteristic characteristicLiving things can ________ .
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22ndnd characteristic characteristicLiving things need ____ .
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33rdrd characteristic characteristicLiving things need _______ .
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44thth characteristic characteristicLiving things can _______ .
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55thth characteristic characteristicLiving things can
_______________ .
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66thth characteristic characteristicLiving things can _____________
to stimuli.
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77thth characteristic characteristicLiving things can ___________ .
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Seven characteristics of Seven characteristics of living thingsliving thingsLiving things can
◦Move◦Grow◦Reproduce◦Response to stimuli◦Excrete
Living things need◦Air◦Food
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How about the following How about the following objects?objects?
http://www.youtube.com/watch?v=x_ZFx9nDbhk
Can you give some characteristics they have?
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3. We can
move!
1. We can
response when
you touch us!
2.We need food(batte
ry)!
4. So, are we living things
?
The answer is……The answer is……
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No, we are not living things.We cannot breathe.
We cannot reproduce.We cannot grow.
We cannot excrete.
ConclusionConclusion
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An object with all seven characteristics is defined as living
thing.
If there is at least one characteristic is missing, it is not a
living thing!
So, we are non-living things!
SummarySummaryLiving things ( 生物 )
◦Seven characteristics ( 七大特徵 ) Can move ( 可以移動 ) Need air ( 需要空氣 ) Need food ( 需要食物 ) Can grow (可以生長 ) Can reproduce ( 可以生殖 ) Can response to stimuli ( 可以對刺激作出反
應 ) Can excrete ( 可以排泄 )
Non-living things ( 非生物 )19