2TTO ECOLOGY B2 feeding relationships

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BiologieMiddelbare schoolhavo, vwoLeerjaar 2

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Slide 1 - Diapositive

Food chains and food webs
Food chains and food webs have different groups of species:
  1. Producers - organisms that produce their own energy
  2. Herbivores - plant eaters
  3. Carnivores - meat eaters
  4. Omnivores - plant and meat eaters

Slide 2 - Diapositive

Food chains and food webs
Example of a food chain

Slide 3 - Diapositive

Food chains and web
Example of a food web

Slide 4 - Diapositive

Food chains and food webs
Food chain = a diagram showing who eats who
Food web = multiple food chains that are connected

Rules of food chains and webs:
  1. You always start with plants
  2. Arrows mean 'is eaten by'

Slide 5 - Diapositive

TROPHIC LEVELS:
- The higher up the food chain you get the larger the organisms can be.

- At each trophic level energy is lost (90%), so more organisms need to be consumed to provide enough energy.

Slide 6 - Diapositive

kerboodle page 304

Slide 7 - Diapositive

SOME CAN HAVE OTHER SHAPES

Slide 8 - Diapositive

PRIMARY CONSUMERS ALWAYS EAT:
A
PLANTS
B
PLANKTON
C
PRODUCERS
D
SECONDARY CONSUMERS

Slide 9 - Quiz

PRODUCERS ARE ALWAYS:
A
PLANTS
B
BACTERIA
C
ANIMALS THAT CAN DO PHOTOSYNTHESIS
D
ORGANISMS THAT CAN DO PHOTOSYNTHESIS

Slide 10 - Quiz

IN A FOOD CHAIN, 80% OF ENRGY IS LOST WITH EACH TROPHIC LEVEL.
A
TRUE
B
FALSE

Slide 11 - Quiz

A PYRAMID OF NUMBERS ALWAYS HAS A PYRAMID SHAPE.
A
TRUE
B
FALSE

Slide 12 - Quiz

A PYRAMID OF ENERGY ALWAYS HAS A PYRAMID SHAPE.
A
TRUE
B
FALSE

Slide 13 - Quiz

WHAT IS THE ROLE OF THE BLUE WHALE IN THIS FOODWEB?
A
PRODUCER
B
PRIMARY CONSUMER
C
SECONDARY CONSUMER
D
TERTIARY CONSUMER

Slide 14 - Quiz

WHO IS TOP OF THE FOODCHAIN IN THIS FOODWEB?
A
LEOPARD SEAL
B
KILLERWHALE
C
BLUE WHALE
D
SEAWEED

Slide 15 - Quiz

START WORKING!!

Slide 16 - Diapositive