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It's us

Class 3e1
Though we're small in numbers but we have big powers!
List of people

Bio assignment due on 27JAN
Name of people who had completed will be bold.

Allie ; April ; Crystal ; Denise ; Indira ; Saranya ; Sheryl ; Jesslyn ; Siauxin ; Yunji ; Huiming ; Ruelia ; Peizhen ; Dingheng ; Weesiang ; Zhengguang ; Weixhan ; Weikai ; Issac ; Fengye

P/S: Click on your name, your post will appear.



PICTURE PICTURE

First ever bio trip.






Linkage

Allie
Crystal
Sheryl
Jesslyn
Huiming
Lau Wee Siang


What happened?

January 2010
February 2010

Thanks

Blogskins.com
LSX


} Is the shed tail of a lizard considered a living thing?
Tuesday, January 26, 2010 @ 8:58 PM



Sometimes, it is difficult to determine which organism is classified under living or non living things.

The criteria for an organism to be classified as a living thing is base on the eight characteristic which is ,Movement,Excretion ,Respiration,Irritability ,Growth,Reproduction,Adaptability ,Nutrition. Living things have most or all of the eight criteria.

Does the lizard tail has a mind of its own when it's being shed off? The shed tail moves complexly, so is it considered as a living thing?

My aim is to conclude whether the lizard tail is a living thing or not.

Shedding its tail is a common anti-predator defense among lizards. When attacked, many lizards drops the wriggling tail and escapes. The predator often feasts on the tail while the lizard runs to safety.

Movement- The shed tails of the lizard wiggles. The movements of the shed tail is because of the far end of the tail, in a part of the spinal cord,at which it wiggles continuously.

Respiration- The shed tail does not convert nutrients into useful energy in a cell. Neither does it exchange carbon dioxide for fresher air.

Growth- The shed tail does not grow anymore as it is detached from the lizard. However, the lizard would grow a new tail afterwards. It will no longer grow either because

Nutrition- The shed tail no longer needs nutrients or no longer can obtain nutrients.

Excretion- The shed tail does not produce its own waste.

Therefore I concluded that the lizard tale is NOT a living thing~!

Reference.
http://www.sciencedaily.com/releases/2009/03/090325170604.htm


Done by,
Crystal Chua :D