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Thursday, 13 December 2012

Natural Defense In Plants

Certain plants have specific characteristics that can protect themselves from enemies.  Can you name some of the characteristics?


Pineapple plants and fruits have many sharp thorns.  Thorns on plants serve as a form of protection.  Since plants are unable to move or escape from threats.  They develop thorns as a means to keep from attack.  The thorns are evolutionary developments that allow for group defense when plants grow in bunches.  Pineapple can be cumbersome when you try to cut them.  The top of the fruit has sharp, pointy leaves that makes harvesting the delicious fruit challenging and the outside is rough and bumpy, which makes it difficult to cut.  Pineapple leaves are waxy, strap-sharped leaves 2 to 6 feet in length.  They usually have a sharp point on the tip of the leaf and spines along the margins of the leaves.  The leaves may be green or variegated in color.  The pineapple "fruit" is not really a fruit at all but is a mass of individual berries fused to the central stalk.  This is why the "fruit" has leaves on top.  They are actually the continued growth of the stalk beyond where the berries are attached.






Precaution
Be careful of the sharp thorns when you handle a pineapple fruit.

2 comments:

cheong yoon yeo said...

The notes really enriches my knowledge. Thanks a lot.

phoon leefuai said...

Glad to know that we can share the knowledge

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