II. Food Webs

Question 1

Define food chains

Answer 1

Links the tropic levels of an ecosystem from producers to top carnivores, are linear (producers —> carnivores)
- terrestrial and marine food chains

Question 2

Primary producers

Answer 2

Autotrophs usually photosynthetic organisms, make up the tropic level ecosystem supporting all other levels

Question 3

Food chain

Answer 3

Representation of the passage of energy from primary producers through various consumers to progressively higher tropic levels - unbranched

Question 4

Decomposes/detritivores

Answer 4

Organisms that break down organic after from all trophies levels, consumers get their energy from detritus or non living organic matters

Question 5

Trophies Levels and order

Answer 5

The position an organism occupies in a food chain

1. Primary producers, 2. Primary consumers 3. Secondary consumers 4. Tertiary consumers 5. Quaternary consumers

Question 6

Food webs are

Answer 6

A representation of the various paths of energy flow through populations in a community

Question 7

What is the base tropic level in Green or grazing food webs

Answer 7

Base tropic level will be primary producers in green food webs (alive base)

Question 8

What are autotrophs

Answer 8

Name your the trophic level of an ecosystem that ultimately supports all other levels at the base

Question 9

What are detritivores?

Answer 9

Organisms that break down organic matter from all trophic levels

Question 10

What is the base tropic level in brown food webs

Answer 10

Base tropic level is decaying plant matter (detritus) and dead animal matter (carrion) in brown food webs (dead base)