Chapter 5 Ecosystems

Question 1

What is an eco system

Answer 1

Made up of plants, animals and their surrounding physical environment including soil, rainwater and sunlight

Interrelationships link biotic and abiotic parts of the ecosystem - eg animals eating th plants (physical links) or mild acids in rainwater speeding up the Decay of leaves (chemical links)

Question 2

What size is an Eco system

Answer 2

Any size ayy

Local - also called a habitat
Regional
Global
Earth

Question 3

What are primary producers

Answer 3

Plants that use photosynthesis and take nutrients from the soul using their roots

Question 4

What are primary consumers

Answer 4

Herbivores - cows or rabbits

Question 5

What are secondary consumers

Answer 5

Carnivores- they feed on herbivores eg fox

Question 6

What are tertiary consumers

Answer 6

Top carnivore - eat herbivores and carnivores

Question 7

How are interrelationships shows between feeding groups

Answer 7

In a food chain - shows the weight of biomass getting smaller at each level

Have trophic levels - producers, primary consumers ….

Question 8

What are decomposers

Answer 8

Organisms that over time break down dear organic matter

Include; scavengers such as insects that eat dead wood, detritivores such as bacteria

They help return nutrients to the soil by an organic substance called humus

Question 9

What’s a nutrient cycle

Answer 9

Shows the energy transfers between litter, biomass and soil