7th Grage Recommended-Biological Interactions RE-cap

All organisms rely on each other for survival. The success of their survival depends on the actions of other organisms and/or species that live in the ecosystem. Muitalism-A honeybee moves from flower to flower. The honeybee benefits as it gathers nectar to make honey. The flower benefits from the transfer of pollen that sticks to the bee's feet as it moves from one flower to the next. Parasitism-The tick drinks the blood of a dog. The tick benefits as it gains nourishment. The dog is harmed as the tick's bite may cause illness and spread disease. Commensalism-A spider builds its web between two flowering plants. The spider benefits as it makes its home by trapping food in its web. The flowering plants are neither helped nor harmed. Compitition-Two bucks lock antlers. They are fighting for territory and mates. The victor benefits by gaining the resources of territory and mates, while the other is harmed by the loss of these resources. Preditaiton-A bird eats a spider. The bird benefits from the nutrients, while the spider is harmed, becoming the meal for the bird. ======================================================================== ---------------------------------Prey-Predator Relationships-------------------------------------- Predators-An increase in the predator population means that more prey will be eaten. Eventually, fewer prey will be available in that ecosystem. Prey-As the prey numbers decline, predators go hungry and begin to die off as the predators cannot find enough prey to eat. Predator-With fewer predators, the prey have a better chance of survival and begin to increase in number. Prey-The increasing prey population allows the remaining predators to eat more, causing an increase in the number of predators.

The Helper ∙

Lvl 5

∙ 1y ago