Wednesday, November 21, 2007

Theme 7: INTERDEPENDENCE IN NATURE

Theme 7: INTERDEPENDENCE IN NATURE
Explanation: Living organisms rarely exist alone in nature.
Clarification: You would post here examples of how organisms must interact together to live successfully.

14 comments:

Navneet said...

There is a mutualistic relationship between bacteria and herbivores like cows. Most mammals are herbivores, eating mostly plants and don't have the enzyme to break the cellulose in the plants to get those glucose elements that are essential. Herbivore mammals rely on bacteria because they contain the cellulose-splitting enzyme which herbivores do not have. Bacteria live within the digestive tract of herbivores and break down cellulose while in return they get food and a shelter.

Muskan said...

Symbiosis is an example of an interdependence relationship. One of the best known examples is the relationship between the small tropical fishes and sea anemones. The fish have evolved the ability to live among the stinging tentacles of sea anemones, even though these tentacles would quickly paralyze other fishes that touched them. The anemone feed on the detritus left from the meals of the host anemone, remaining uninjured under remarkable circumstances.

Muskan said...

Symbiosis is an example of an interdependence relationship. One of the best known examples is the relationship between the small tropical fishes and sea anemones. The fish have evolved the ability to live among the stinging tentacles of sea anemones, even though these tentacles would quickly paralyze other fishes that touched them. The anemone feed on the detritus left from the meals of the host anemone, remaining uninjured under remarkable circumstances.

Navneet said...

There is a parasitic relationship between humans and a retrovirus called human immunodeficiency virus (HIV). In this relationship the virus benefits and the human is harmed in that the human immune system is so weakened that it is hard to fight even the common cold. The virus benefits from this relationship because it gets a mean to replicate and receives nutrition.

Lisa said...

bees and flowers live in a mutualistic relationship where the bees carry pollen to other flowers helping in reproduction and flowers provide a source of food for bees.

Muskan said...

Mutualism exists between ants and acacias. The nectaries at the base of the leaves and the Beltan bodies at the ends of the leaflets provide food for the ants. The ants, in turn, supply the acacias with organic nutrients and protect the acacia from herbivores and shading from other plants.

Navneet said...

An example of a commensalism relationship is that of large trees and bromeliads. In this relationship the host is not harmed nor has a benefit from this relationship while the symbiont, the bromeliad, receives nutrients, shelter, and protection through the host tree.

Muskan said...

Many flowers have coevolved with other species to facilitate pollen transfer. Insects are widely known as pollinators, but they're not the only one: birds, bats, and even opposums and lizards serve as pollinators for some species.

Lisa said...

a mycorrhiza is a symbiotic relationship between fungus and the roots of plants where the fungus receives food and the root gets mor surface area to take up water

Navneet said...

There is a mutualistic relationship between plants and bacteria. Plants receive nitrogen while the baceria receive CHO's and other nutrients/water and shelter/hospitable environment.

ryan g said...

There is a mutualistic relationship between some species of sharks and remoras. Remoras' have dorsal sucking disks that help them hang off sharks and clean them and keep them bacteria free. In return the Remoras' get the left overs on the sharks.

ryan g said...

A mutualistic relationship is that between the yellow billed oxpecker and many large animals such as water buffalo. They feed off the animals and keep them clean while the oxpecker's get a meal.

Neil Mitchell said...

Absolutely nothing can exist by itself in our world, not just living systems. Everything is entirely dependent, from the smallest particle to our inconceivably immense universe and everything contained within-ALL inter-dependent! Personally I find this to be the most incredible thing ever!

lee woo said...

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