Tuesday, May 24, 2011

HBL Koh Jing Yuan 2A217

2) An example of human activities would be deforestation. Deforestation will lead to the decline of the number of Hirtella Physophora, which the ants depend to obtain materials to build their traps and catch prey. Without the traps, they would not be able to get food and thus starve and die. Without the shelter of the plants, the Allomerus Decemarticulatus will be more prone to the preadators, ultimately leading to the decline on the population of Allomerus Decemarticulatus ants.

3a)
Predation : The ants will trap their prey, sting them and then proceed to consume the prey.

Commensalism : The ants will cut hairs from the stem of the host plant and use the tiny fibres to build a spongy platform, in order to trap their preys. The ants benefited from this and the plants are not affected.

Mutualism : The ants protect the plants while the plants provides the ants with materials for them to build traps and also protein for the ants.


3b)
Predation : Barn owl and rats

Commensalism : Shark and Pilot fish

Mutualism : Hermit crab and sea anemones

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