Monday, May 23, 2011

LSS HBL by Cheng Tong Wen( 2P305)

How has/will human activities in the Amazon regions affect the Allomerus decemarticulatus ants?
 Deforestation is one of the human activities in the Amazon regions that affect the Allomerus decemarticulatus ants. Deforestation is the clearing of forest by human for reasons such as urban development or cultivation. Deforestation in the Amazon forest regions will cause the Allomerus decemarticulatus ants to lose their natural habitat as it is destroyed. With deforestation, the Allomerus decemarticulatus ants are unable to catch their prey as they depend largely by using plants as traps to capture animals. Thus, there would be fewer food for the Allomerus decemarticulatus ants to eat and their population would decrease and they may become extinct.



3a ) from the extract, identify the different symbiotic relationships and cite the organisms involved. Clue: There are at least 3 types of relationship.
CommensalismThe Allomerus decemarticulatus ants and the plant

Mutualism: The Allomerus decemarticulatus ants and the fungus.

Parasitism: The Allomerus decemarticulatus ants and the insect it catches.


3b) For each type of relationship you have identified in (a), name another example of a pair of organisms depicting that relationship in nature.

CommensalismThe remora fish and the shark
The remora fish attaches itself to the shark and feed on bits of food scattered by it. The remora fish obtains food while the shark is not harmed, nor does it benefit.

Mutualism: The ants and the aphids
Aphids extract sucrose from the plants and produce honeydew out of their anus. The ants milk the aphids for the honeydew and protect the aphids against insect predator.

Parasitism: Blood –sucking ticks and dogs
The blood-sucking ticks live on dogs and obtain food from it.

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