Components of ecosystem, Biology

An ecosystem consists of two types of components:

(a)   Abiotic components:

This includes the non-living components of the ecosystem. These are physical and chemical factors.

1.             Physical factors include: Sunlight, shade, wind, humidity, rain, types of soil and its pH.

2.           Chemical factors:

                  (i)            Inorganic substances:  includes C, H, O, N, P, S, and H2O etc involved in material cycle.

                  (ii)           Organic substances: includes carbohydrates, proteins, lipids etc present in biomass.

(b)   Biotic Components:

All the organisms are part of biotic components. They are grouped into three categories:

(1)   Produce (2) Consumers (3) Decomposers.

 

(1)   Producers:

All the green plants of an ecosystem are collectively known as producers. The green plant have chlorophyll by which they trap solar energy  and convert it into carbohydrate by using CO2 and H2O .this process is known as photosynthesis. So, green plants are called autotrophs (auto-self: troph-food) as they prepare their own food. No ecosystem can survive without green plants.

(2)   Consumers:

        They are known as heterotrophs (hetero- other, trophs-food) as they are directly or indirectly depend upon producers for their food. They are categorized as follows:

(i)           Primary Consumers or Herbivores:  they are first order consumers because they depend upon green plants or producers for their food eg. Cow, goat, rabbit, deer.

(ii)         Secondary Consumers: they are also known as primary carnivores because they depend upon primary consumers for their food.eg. Fox, cat, frog.

(iii)       Tertiary Consumers:  they are also known as secondary carnivores because they depend upon secondary consumers for their food eg. Owl, peacock wolves etc.

(iv)        Quaternary Consumers: they are top carnivores which depend upon tertiary consumes for their food and not eaten by any other animals eg lion, tiger, crocodile etc.

 

(3)   Decomposers:

They are small microscopic (fungi, bacteria) organisms and occur everywhere in ecosystem i.e. and, air and water. They decompose dead organic matter into simpler compounds. They are also known as saprophytes.

The producers form first trophic level of food chain, herbivores form the second trophic level and carnivores form third trophic level.

Posted Date: 7/11/2012 6:47:16 AM | Location : United States







Related Discussions:- Components of ecosystem, Assignment Help, Ask Question on Components of ecosystem, Get Answer, Expert's Help, Components of ecosystem Discussions

Write discussion on Components of ecosystem
Your posts are moderated
Related Questions
In ancient Greece the father of Medicine, Hypocrates, described a method of diagnosing diabetes mellitus by tasting the patient's urine. What is the physiological explanation for t

How do the repairing enzymes of the genetic system act? There are enzymes within the cells that detect errors or alterations in DNA molecules and start a repair of those errors

how to make question on classification of Protozoan parasite

Explain Precautions for Morphological Study of Fungi? 1. Use sterile forcep and needles for slide culture technique. 2. Aseptic conditions should be maintained.  3. Caref

Describe Wide Split S in details? It is a persistent split that widens on inspiration to at least 60 msec. May be due to delay in P, e.g. RBBB or due to early A, as occasionall

Explain Composition of Human Milk? Research clearly shows that each type of mammalian milk is unique and consists of a highly complex mixture of organic and inorganic compounds

Explain the term- Horizons These processes take a long time- may be a few thousand years to create a soil. As the time passes, the soil matures and generally becomes deeper and

Etiology: This is the study of origin of diseases. In other words we can say etiology is the study of causation and origination. Etiology most commonly used in philosophical theori

Which of the following is true for a motor cortex corticospinal interneuron A that produces action potentials during movements of the big toe of the right foot in right-handed Pati

Genes and Alleles The inheritance of any character can be studied only when thcre are two contrasting conditions, such as yellow versus green seed colour (as observed by Mendel