Food Chains and Webs

Question 1

Producers

Answer 1

autotrophs- organisms that can produce organic molecules from simple inorganic molecules with the aid of an additional energy source

Question 2

Consumers:

Answer 2

Is a heterotroph- an organism that gains nutrients from complex organic molecules (Heterotrophs ultimately depend on autotrophs)

Question 3

Type of consumers

Answer 3

• Primary consumers: organisms that directly eat producers
• Secondary consumer: organisms eating primary consumers
• Tertiary consumer: organisms eating secondary consumers

Question 4

Decomposers

Answer 4

a microorganism (bacteria and Fungi) that breaks down the dead organic matter to create inorganic matter

Question 5

Detritivores

Answer 5

organisms which feed on pieces of partly broken down plant or animal tissue known as detritus

Question 6

Scavengers

Answer 6

feed on dead organisms

Question 7

Top Carnivores

Answer 7

organisms at the top of the food web/chain- have no predators

Question 8

Omnivore

Answer 8

eats both plants and animals

Question 9

Herbivore

Answer 9

eats only plants

Question 10

Carnivore

Answer 10

eats only animals

Question 11

Trophic levels

Answer 11

feeding levels

Question 12

Food Chains

Answer 12

A sequence which represents the way in which energy is transferred from one organism to another. Each stage in a food chain is referred to as a trophic level: Nettle plant  large nettle  ladybird. Arrow represents direction of energy flow

Question 13

Food webs

Answer 13

A diagram which shows the way in which different species of organisms in a community depend on each other for food
Both food webs start with a producer which gains its energy from a source such as sunlight. Energy is lost through respiration and waste such as faeces and urination