Biotic Relationships

• Done By:

• Tang Wen Yue

• Liau Zheng En

• Goh Chin Fan

• Yeo Jun Jie

Friday, January 21, 2011

MutualismThe pollination process involving flowering plants and insects (such as bees and wasps) is the best example of Dispersive Mutualism. The insects get their food in the form of nectar, and at the same time, they help the plants pollinate their flowers as the pollen grains will stick to their legs which they will carry to another flower, therefore pollinating the flower.

Soybean aphids and an ant on a soybean stem.

Friday, January 21, 2011

Parasitism- Parasitism is the relationship between two species of plants or animals in which one benefits at the expense of the other, sometimes without killing it. This includes ticks, fleas, leeches, lice, etc.

Sources: http://www.businesspundit.com/wp-content/uploads/2009/07/tick.jpghttp://quickcare.org/img/art/lice.jpg

http://www.britannica.com/EBchecked/topic/443191/parasitism

Head Lice viewed under a microscopeA tick on a human finger

Friday, January 21, 2011

CommensalismCommensalism is a

relationship where one organism derives benefit

from the relationship while the other is

unaffected .Remoras attach themselves to other

large,marine creatures like sharks through a flat oval sucking disk on the top of

their heads.

Remoras feed on loose pieces of their host’s meals,and the

sharks are not affected by the

Remora in any way.remora: remora and leopard shark. [Photograph]. In Encyclopædia Britannica. Retrieved from http://www.britannica.com/EBchecked/media/30821/A-remora-and-its-host-a-zebra-shark

Adapted from http://www.britannica.com/EBchecked/topic/497706/remora

Friday, January 21, 2011

Predator-PreyA predator-prey relationship is

that where an organism(Predator) absorbs another’s

(Prey) tissues through consumption.Here,the predator is the leopard seal and the prey

is the unfortunate penguin.http://www.poyi.org/64/02/ae03_01.php

Retrieved 20th January 2011

Friday, January 21, 2011

Symbiosis among plantsExample of Parasitic plants: Strangler fig tree, Large trees in the rainforest

which covers the canopy.

Commensalistic plants: epiphytic plants*

*Epiphytic plants: Plants that rows on a host, but unlike a parasite, takes no nutrients from the tree itself and relies on nutrients from the air, falling rain, and the compost that lies on tree branches. (source: http://rainforests.mongabay.com/0405.htm)

http://rainforests.mongabay.com/0405.htm

http://www.mongabay.com/04strangler_fig.htm

Friday, January 21, 2011