Principles of Biology
2nd Edition
ISBN: 9781259875120
Author: Robert Brooker, Eric P. Widmaier Dr., Linda Graham Dr. Ph.D., Peter Stiling Dr. Ph.D.
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 44.6, Problem 1TYK
Net primary production is
- the energy that passes from plants on to herbivores.
- gross primary production minus the energy used by herbivores.
- the energy fixed in photosynthesis.
- the energy fixed in photosynthesis minus the energy used in respiration of photosynthetic organisms.
- gross primary production minus the energy used by consumers.
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Net primary productivity refers to
the rate of energy storage as organic matter by autotrophs after respiration is deducted
the total rate of photosynthesis, or energy assimilated, by autotrophs
the amount of accumulated organic matter found in an area at a given time
the production of new tissues and offspring by heterotrophs
Why don’t producers (plants) increase GPP in response to increasing CO2 in the atmosphere and thus reduce climate change?
Group of answer choices
Excess fertilizer from human activities reduces plant growth
High concentrations of CO2 are toxic to plants
CO2 concentrations are not increasing
Consumers will just eat more plants if they grow faster
CO2 is not the limiting nutrient for plants
Food Web Color Code…
Producer (Green) ____________________
Primary Consumer ( Yellow) _____________
__________________________________
Secondary Consumer (Blue) _____________
__________________________________
Tertiary Consumer (Red) _______________
Decomposer (Orange) _________________
__________________________________
Describe the movement of energy through the web___________________________
Type
Eats …
Examples
Herbivore
Carnivore
Omnivore
Food Web is a bunch of overlapping _________ ________.
The primary source of all energy comes from the ______.
What would happen if an organism became extinct?
_____________________________________________
Chapter 44 Solutions
Principles of Biology
Ch. 44.1 - Prob. 1CCCh. 44.1 - Prob. 1TYKCh. 44.1 - Lake Baikal in Siberia is an ancient, unglaciated...Ch. 44.1 - Prob. 3TYKCh. 44.2 - Prob. 1TYKCh. 44.2 - Prob. 2TYKCh. 44.3 - Why might ecologists think of walking thecoastline...Ch. 44.3 - Prob. 2CCCh. 44.3 - Which of the following are examples of secondary...Ch. 44.3 - In New England salt marshes, Spartina grass...
Ch. 44.3 - Prob. 3TYKCh. 44.4 - Prob. 1CCCh. 44.4 - Prob. 1BCCh. 44.4 - Prob. 2CCCh. 44.4 - Which is part of the original MacArthur-Wilson...Ch. 44.4 - Prob. 2TYKCh. 44.5 - In these two food chains, plants and...Ch. 44.5 - Prob. 1CCCh. 44.5 - Prob. 1TYKCh. 44.5 - Detritivores that feed on the dung of herbivores...Ch. 44.5 - Prob. 3TYKCh. 44.6 - Net primary production is the energy that passes...Ch. 44.6 - Prob. 2TYKCh. 44.6 - Most gross primary production is used in (by)...Ch. 44 - Prob. 1TYCh. 44 - Prob. 2TYCh. 44 - Prob. 3TYCh. 44 - Prob. 4TYCh. 44 - On which types of islands would you expect species...Ch. 44 - Prob. 6TYCh. 44 - Autotrophic organisms are primary consumers....Ch. 44 - Prob. 8TYCh. 44 - Prob. 9TYCh. 44 - The most highly productive terrestrial ecosystems...Ch. 44 - Prob. 1CCQCh. 44 - Prob. 2CCQCh. 44 - Prob. 3CCQCh. 44 - List some possible ecological disturbances, their...Ch. 44 - Prob. 2CBQ
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- Primary consumers _____. receive energy directly from the sun make their own food using photosynthesis break down dead matter into chemical nutrients are the first to receive energy from a plantarrow_forwardWhich of the following best describes how using fertilizer would affect the nitrogen cycle? The use of fertilizer would result in more nitrogen in the groundwater. The use of fertilizer would result in less nitrogen in the soil. The use of fertilizer would result in more phosphorus in the soil. The use of fertilizer would result in more nitrogen being added to the carbon cycle.arrow_forwardA group of researchers are assessing energy availability in a terrestrial ecosystem. The image shows the food web for this ecosystem. They set up three plots and assess the biomass of producers, primary consumers, and secondary consumers. Rabbits and grasshoppers feed on ground cover plants that grow on the forest floor. Plot 1 is composed of mature hardwood trees, and only 25% of the sunlight reaches the shrubs and grasses compared to plots 2 and 3, which have fewer trees and allow more sunlight to reach the forest floor. Based on the food web shown here, which of the following best describes how the reduction in sunlight to the forest floor would impact the number of primary consumers (squirrel, grasshopper, rabbit, and deer) in plot 1 compared to the other plots? A - Plot 1 will show an increase in deer only because they feed on trees. B - Plot 1 will show a decrease in squirrels and rabbits, while deer and grasshoppers will increase. C - Plot 1 will show a decrease in rabbits and…arrow_forward
- To generate biogas the required biomass resources must be on wet form, else biogas will not produce. How do you disagree or agree with this statement? Justify your answerarrow_forwardGiven the irreversibility of burning up fossil fuel Reserve, what steps should we take to promote energy conservation? Should energy be taxed at a high rate? Should we assume that natural gas and other energy sources will become available as they are needed?arrow_forwardA class is studying the tropic levels of an ecosystem. The pyramid of biomass shown is a model of these trophic levels. Which of the following is the best explanation of the available energy at each of the trophic levels in this ecosystem ? ANSWER CHOICES ARE IN THE PHOTO. thanks.arrow_forward
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