Theory Exam Mock 1

Question 1

State what type of rocks form through cooling and solidification of magma/lava

Answer 1

Igneous rock

Question 2

Four basic components of soil

Answer 2

Mineral matter/ rock
Water
Air
Organic matter/nutrients

Question 3

Explain how humans have caused habitat fragmentation

Answer 3

Habitat loss (agriculture/forestry/urban development/ industry)

Infrastructure (roads/rail) preventing movement

Damage to habitat (pollution/recreation)

Regeneration, lack of management resulting in habitat change

Question 4

Explain how energy moves through the food chain

Answer 4

Solar is source of energy

Photosynthesis captures solar= usable chemical energy (glucose)

Primary consumers-> secondary consumers

Each level of in the food chain gets lesser energy as some is used for life and heat loss

Fungi and decomposeres/ bacteria get energy from decaying matter

Question 5

Ways animals release carbon

Answer 5

Respiration

Decomposition

Combustion

Question 6

Pioneer species

Answer 6

First plant species to colonise an ecosystem

Question 7

Climax community

Answer 7

The final stage of succession, remaining relatively unchanged until destroyed by an event such as fire or human interference