Energy And Ecosystems

Question 1

What is an ecosystem

Answer 1

They are dynamic, the abundance and distribution of organisms are controlled by biotic and abiotic factors

Question 2

What are abiotic factors

Answer 2

Non living such as temperature, rainfall ,sunlight

Question 3

What are biotic factors

Answer 3

Living factors such as predators, competition

Question 4

Population

Answer 4

All the organisms of on species in a habitat

Question 5

Community

Answer 5

All the organisms of all the species in a habitat

Question 6

Habitat

Answer 6

Where an organism loves

Question 7

Niche

Answer 7

The specific role an organism plays in an ecosystem

Question 8

Throphic level

Answer 8

The different levels in a food chain

Question 9

Intraspecific competition

Answer 9

Competition within the same species

Question 10

Interspecific competition

Answer 10

Competition between different species for the same resources

Question 11

Gross primary production

Answer 11

Total amount of energy made by producers

Question 12

How do you work out net production

Answer 12

N=I-(R+F)

N=biomass, I= energy ingested,F= waste

Question 13

Describe the nitrogen cycle

Answer 13

Ammonium ions, nitrate 1, nitrate 2, nitrogen gas in atmosphere, plants + animals, decomposes, amonification–ammonium ions

Question 14

Saprobiontic nutrition

Answer 14

Digestion or break down of organic matter by extracellular enzymes

Question 15

Saprobions

Answer 15

A type of decomposed that digests their food by saprobiontic nutrition

Question 16

Saprobiontic nutrition

Answer 16

Digestion or the break down or organic matter by extracellular enzymes

Question 17

Natural fertilisers

Answer 17

Donation nitrogen and phosphorus in organic matter e.g. Manure or compost

Question 18

Artificial fertilisers

Answer 18

Inorganic chemical compounds that contain n+p

Question 19

Leaching

Answer 19

When soluble compounds are washed off by the rain

Question 20

Eutrophication

Answer 20

1. N+P leach into pond water 2. Algae blooms 3. Blocks out light 4. Plants can’t photosynthesis 5. Saprobionts break down dead plant 6. Respire aerobically 7. Fish die

Question 21

Briosphere

Answer 21

Simple plants that have no stem and grow close to the ground

Question 22

Seral stage

Answer 22

Plant life changing so does the fauna

Question 23

Climax community

Answer 23

When ecosystems have reached their carrying capacity of an environment

Question 24

Autograph

Answer 24

An organism that produces its own energy

Question 25

What are the common changes during succession

Answer 25

Increased biomass, increase size of organisms, increased biodiversity, more complex food webs, increase gross productivity

Question 26

Succession

Answer 26

A directional change in plant and animal communities with time

Question 27

Secondary succession

Answer 27

Occurs on site where some changes has happened to an existing community, this is faster than primary succession

Question 28

What are the 6 stages of succession

Answer 28

1. Migration 2. Colonisation 3. Establishment 4. Competition 5. Stabilisation 6. Climax

Question 29

What is the rhyme to remember the stages of succession

Answer 29

Mud, can, easily, cover, solid, concrete

Question 30

Biodiversity

Answer 30

The variability among living organisms from all sources and the ecological systems of which they are a part of

Question 31

Biodiversity hotspot

Answer 31

Aide conservation is deciding what sites need the most conserving

Question 32

Conservation

Answer 32

Managing succession and balancing the ethical and commercial interests, done by changing practises or tweaking the land