Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Transcribed Image Text:Food Chains and Food Webs
INTERPRETING GRAPHICS
Use the figure below, which shows the food web of an aquatic ecosystem,
to complete items 1-7.
Killer whale
Crabeater seal
Elephant seal
介
Adelie
penguin
Squid
Leopard seal
Cod
Small animals
and protists
Algae
Krill

Transcribed Image Text:and
Use the figures below, which show trophic levels in an ecosystem, to complete
items 8-11.
Done by Counting Organisms
at Each Level
Done by Weighing
Organisms at Each Level
Done by Measuring the Calories
Stored at Each Level
First-level
First-level
First-level
carnivores
carnivores
carnivores
Herbivores
Herbivores
Herbivores
Marine
Marine
plankton
Marine
plankton
plankton
C
Study the three pyramids above. In the space provided, identify which pyramid is
the most accurate indicator of each item below by writing the correct letter (A-C)
in the space provided.
8. number of individual organisms
9. measurement of productivity
10. measurement of biomass
11. Which pyramid is the most accurate indicator of the amount of energy
available at each trophic level? Explain.
Copyright by Holt, Rinehart and Winston. All rights reserved.
Holt Science: Biology
34
Science Skills Worksheets
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