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After an ecological study of feeding relationship students constructed the food web below.

      

After an ecological study of feeding relationship students constructed the food web below.
pic17920191724.png
a) Name the process through which energy from the sun is incorporated into the food web.
b) State the mode of feeding of the birds in the food web.
c) Name two ecosystems in which the organisms in the food web live.
d) From the information in the food web, construct a food chain with the large bird as a quaternary consumer.
e) What would happen to the organism in the food web if bird N migrated?
f) Not all the energy from one trophic level is available to the next level. Explain.
g) i) Two organisms which play a role in the ecosystem are not included in the food web. Name them.
ii) State the role played by the organisms named in g (i) above.
h) i) State three human activities that would affect the ecosystems.

  

Answers


sharon
a) Photosynthesis
b) Carnivorous
c) Aquatic /water
Land /terrestrial
d) Algae ? 200 planktons ? small fish ? birds ? large birds 1mk
e) Number of snails would increase population of green plants would reduce number of bird M would increase
f) Lost through respiratory excretion urination /sweating some parts eg hoofs horns fur not consumed.
g) i) Bacteria
Fungi 2mkd
ii) Decomposers 1mk
h) i) Fishing
Hunting
Deforestation
Irrigation
Pollution
ii) Fishing reduces population of fish
Hunting reduces population of birds
deforestation reduces population of birds
Irrigation reduces water volume therefore affecting population of fish
Pollution chemicals drained in water are poisonous to the fish

sharon kalunda answered the question on September 17, 2019 at 14:27


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