Sunday, January 27, 2013

Description of Biotic Component

Sub-division under biotic component 
  1. Producers [Autotrophic]
  2. consumers [Hetrotrophic] 
  3. Decomposers   
Producers - Producers are autotrophic because they prepare their food by its own by the 
process of photosynthesis e. g. Plants. Producers are any kind of green plant. Green plants make their food by taking sunlight and using the energy to make sugar.





Consumers - Consumers are heterotrophic because it depends on other. Consumers have to feed on producers or other consumers to survive. Deer are herbivores, which means that they only eat plants (Producers). Bears are another example of consumers.







Decomposers - Decompose dead and decay material ,e.G. In form of bacterias,fungi. Decomposers are the garbage men of the animal kingdom; they take all the dead animals and plants (consumers and decomposers) and break them down into their nutrient components so that plants can use them to make more food.







Revise your learning 

Multiple choice questions
Q1. An example of a producer is a
  a.  fungus
  b.  caterpillar
  c.  bird
  d.  moss
Q2. An example of a consumer in a pond ecosystem is:
  a.  a water lily
  b.  algae
  c.  a reed
  d.  a frog  
Q3. Both consumers and producers are a source of food for:
  a.  scavengers
  b.  decomposers
  c.  carnivores
  d.  herbivores

Q4. A caterpillar eats a leaf, and a bird eats the caterpillar.  In this interaction, the bird is a: 
  a. producer
  b. herbivore
  c. primary consumer
  d. secondary consumer 

Q5. An animal that eats only plants is a:
  
  a. primary consumer
  b.  secondary consumer
  c.  tertiary consumer
  d.  primary producer



 



 

Saturday, January 26, 2013

What is ecology ?
The study of living organisms and how they interact with their physical environment.

What is ecosystem ?
A functional unit of environment that includes all living organisms and physical features within a given area.

Component of ecosystem



What are biotic component ?
  Biotic components: it consists of all living organisms ,i.e. Cats,dog,tiger,any human body ,etc.

 What are abiotic component ?
Abiotic components:it consists of all non-living organisms ,i.E. Wooden material,electronic materials,buildings,ice bergs ,etc.
For getting better understanding please see this video

 Revise your learning

Multiple choice questions
Ecology is the study of how:
  a.  the physical environment changes   over time
  b.  biotic factors change over time
  c.  matter interacts with energy in our   environment
  d.  living things interact with each other   and their environment
 
An ecosystem is made up of:
  a.  living things only
  b.  physical environment only
  c.  living things and the physical   environment
  d.  living things and decaying matter

A scientist who studies the interactions of plants and animals is called:
  a. a physicist
  b. a botanist
  c. a geologist
  d. an ecologist
Which of the following factors in an ecosystem is biotic?
  a.  insects
  b.  soil
  c.  water
  d.  sunlight
 
Biotic factors in an ecosystem may include:
  a.  bacteria, soil, and water
  b.  plants, animals, and bacteria
  c.  temperature, water, and soil
  d.  animals, fungi, and temperature
 
An example of a biotic factor is:
  a.  soil
  b.  a rock
  c.  water
  d.  a tree

Fill in the blanks

__________________________ is the study of how living things interact with each other and their environment.

Living things in an ecosystem are ________________________ factors.

 
Nonliving things in an ecosystem are __________________________ factors.

True or Falls .

Organisms in soil are an example of abiotic factors.               (      )

An ecosystem is composed of biotic factors.                           (      )

Plants use energy to make sugars through photosynthesis.    (     )