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
Cerebral Palsy Cerebral palsy is a non-progressive neuromuscular disorder characterised by disorder of strength, muscle control, posture or movement due to brain injury, befor

Name some Drugs to prvent tuberculosis Pyrazinamide can cause morbilliform rash, arthralgias and asymptomatic hyperuricemia, and blocks the hypouricemic action of allopurinol (

Difference between Adrenergic and Cholinergic Fibre- S.NO .   1. ADRENERGI C FIBRE   Release nor adrenaline at their CHOLINE

Assessment   For assessment of clinical manifestation of the disease you need to understand three stages of clinical course of the disease which are as follows:  Prodromal

Collagen Helix Collagen has a large amount of glycine (25%) and proline (and hydroxyproline, 25%). They run parallel, form a right handed super-helix that is stabilized b

Q. What do you mean by Descending Aorta?  The descending aorta begins at the level of the fourth thoracic vertebra. It is defined through the cardiac shadow on the CXR, as it l

Why is the cytoplasm of sperm cells very reduced? Why do mitochondria of sperm cells concentrate in the base of the flagellum ? The decreased cytoplasm of sperm cells reduces th

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

C ampylobacter infection C a mpylobacter jejuni is the commonest species found in poultry. These are delicate organisms that may not survive outside the host unless prot

The vascular tone increases as the arterial size decreases. The tone at any time reflects the effects of excitory and inhibitory pathways. Neurotransmitters, physical forces like s