• Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

Card Range To Study

through

image

Play button

image

Play button

image

Progress

1/34

Click to flip

Use LEFT and RIGHT arrow keys to navigate between flashcards;

Use UP and DOWN arrow keys to flip the card;

H to show hint;

A reads text to speech;

34 Cards in this Set

  • Front
  • Back

What does the word Habitat mean? Give an example.

Places where organisms live
eg. Pond and a frog
What is a Quadrat? and give an example
A sampling square with a set measured square used to measure the abundance and distribution of living organisms
eg. 0.5m² / 1m²
What does the word random mean? Give an example
Without bias - you need to sample randomly
eg. random button on calculator
What does the word Population mean? Give an example
All the organisms of a species found in an eco-system at one time
eg. Human population of Monmouth (8,877)
What does the word Community mean? Give an example
Population of all species found in an eco-system at one time
eg. All Monmouth species

What does the word Species mean? Give an example

Organisms which look the same, have the same characteristics and produce fertile off spring
eg. Poodle or Orangutang

What does the word Eco-system mean? Give an example

Distinct self supporting system of organisms interacting with each other and a physical environment
eg. Pond, forest etc
What is a method for random sampling?
1. Go down to a meadow, with a quadrat and calculator
2. Use the random button on a calculator and take those amount of steps forward and then right, eg 45.4, 45 steps forward and 4 steps right.
3. Place quadrat on ground and count how many squares have daisies in them to make a percentage
4. Use the random button again and repeat this so you have 10 percentages and then average your result
What is a method for transect sampling?
1. Tape from top of field to bottom
2. Set up the quadrat at one end and count how many Daisies
3. Flip the quadrat over twice so you're covering a different patch of land and count the Daisies
4. Repeat until you're at the top of the field
5. Compare results and observe the surrounding factors, eg. weather and date
What does the word producer mean?
Found at the bottom of a food chain/web
First trophic level.
What does the word consumer mean?
Animals that eat plants or other animals
2nd trophic level and up.
What does the word Trophic level mean?
The position within the food chain/web the organism occupies
What does the word decomposer mean?
Break down material and help to recycle nutrients
What does the term food chain mean?
Shows feeding relationships within an eco-system. in any food chain the arrows mean 'eaten by' and shows the transfer of energy
What are the advantages of a food chain?
Easy to read
Shows where the energy is being transferred to and from.
Quick to map out
What are the disadvantages of a food chain?
Doesn't show the whole picture only 1 food chain
Over simplify the situation
What is a food web?
A food web shows the interaction of the food chains within an ecosystem
What are the advantages of a food web?
More detailed map of interactions
Shows what would happen if a food chain was disrupted
What are the disadvantages of a food web?
Take a long time to map out
Rarely shows all an ecosystem
More confusing
What is a pyramid of numbers?
It represents the number of organisms in each trophic level in a food chain
(not always pyramid shaped)
What is a pyramid of biomass?
It shows the total mass of the organisms in each trophic level
(always pyramid shaped)
What does a shorter bar show on a pyramid of numbers?
The shorter the bar the less organisms there are.

What does a longer bar show on a pyramid of numbers?

The longer the bar the more organisms there are.
Where does the producer in a food chain go on a pyramid of numbers?
It always goes at the bottom of the pyramid of numbers
Does the pyramid of numbers have to look like a pyramid?
No, it depends on the amount of organisms in the food chain.
What is the definition of Biomass
Biomass is the total amount of living material in an organism.
What happens to the biomass at each step on a food chain?
At each step in a food chain the total biomass always decreases
What percentage of energy is transferred between trophic levels
10%
What are the six ways energy is lost before it is passed on to the next consumer?
1. Movement
2. Growth and reproduction
3. Egestion
4. Excretion
5. Heat
6. Some parts of a plant/animal cannot be eaten eg. teeth, bone
What is egestion?
Removal of waste products from the body i.e. sh*tting and p*ssing
What is an apex predator in a food web?
The apex predator is the top consumer
What is a herbivore?
A consumer that eats plants
What is a carnivore?
A consumer that eats other organisms
What is an omnivore?
An animal that eats both plants and organisms