Naji

Question 1

Habitat

Answer 1

Place where an organism Lives

Question 2

Population

Answer 2

All the organisms of one particular species found in one habitat

Question 3

Community

Answer 3

All the different species in a habitat.

Question 4

Ecosystem

Answer 4

All the organisms living in a particular area and all the non-living conditions

Question 5

Biodiversity

Answer 5

The variety of different species of organisms on Earth/ or within a particular ecosystem

Question 6

Why is a high Biodiversity beneficial to the environment?

Answer 6

Makes Ecosystems stable as it ensures foodchains remain stable

Question 7

Bears– Birds —- Maggots
|
Ants
Look at the food chain. What will happen if the maggot Population becomes extinct?

Answer 7

If maggot population becomes extinct, bird population will begin to use ants more as their primary source of food income. This will negatively impact the Ant population (Decrease in size of Ant Population)

A decrease in Ant Population will then result in the Birds decreasing in number and therefore Bear Population

Question 8

Why does Biodiversity decrease?

Answer 8

Increase in Deforestation (loss of habitat)
Global Warming
Decrease in Stability of our Ecosystem
Pollution

Question 9

How does the producer make food?

Answer 9

Use energy from the sun to make it’s own food

Question 10

What is normally the producer in a food chain?

Answer 10

Plants

Question 11

What are decomposers?

Answer 11

Break down decomposers and waste

Question 12

What is a trophic level?

Answer 12

Each level of a food chain

Question 13

What does the arrow show?

Answer 13

Each arrow is a representation of the transfer of Energy

Question 14

Why is Energy Transfer across each stage never 100% efficient?

Answer 14

Not all of the organisms will be eaten

Not all of the contents of the prey is eaten, resulting in loss of energy across trophic levels

Question 15

Where is energy lost in a Producer?

Answer 15

30% of absorbed energy is lost via photosynthesis
5 % of absorbed energy is lost as heat
5 % of absorbed energy converted to chemical energy
50% Wrong Wavelength
5% Reflected
4 % Passes through leaf

Question 16

Where in energy lost in a primary consumer?

Answer 16

30% lost as heat
10% used for growth
60 % lost in urine faeces

Question 17

Where is energy lost in a secondary consumer?

Answer 17

30% lost as heat
10% used for growth
60% lost in urine and faeces

Question 18

What do the Pyramids of Biomass show?

Answer 18

Shows the Mass of living Material Present at each stage of the food chain.

Question 19

How do you answer a question on the affect of extinction/reduction of an organism in a food web?

Answer 19

Look at they Prey and what happens to the prey
Look at what happens to the Organisms Predators
Look at the Competing Predators (Other Predators that feed on the same prey as that organism)