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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Chapter 44.5, Problem 3TYK
Summary Introduction
Introduction:
The series of organisms eating one and being eaten by others is calledthe food chain. In other words, the passing of food, over herbivores to carnivores or omnivores from the plants, is stated as the food chain. Food chains may be simple or complex.
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The term food web refers to the:
Question 10 options:
Rate at which the primary producers can incorporate energy from the sun.
Total weight of the living or previously living organisms in an area at one time.
An organism that can make its own food using energy from inorganic molecules instead of the sun.
A non-linear representation of all the trophic levels in an ecosystem.
A freshwater lake ecosystem has a total primary production of 20,000 kcal. Zooplankton, which are primary consumers, feed on the phytoplankton. Small fish, which are secondary consumers, feed on the zooplankton. Larger fish, which are tertiary consumers, feed on the small fish. How much energy would be available to the tertiary consumers according to the 10% energy rule?
200
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Name the apex consumers in the food web shown here.
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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- Based on the food web shown below, the giraffe, the grasshopper, and the deer are all consumers. Identify the type of consumer they represent and explain what this means.arrow_forwardWhen hunting disrupts the balance in the food chain by removing all owls, there will be no predators on snakes, leading to their increase in numbers. Considering the scenario where the number of lost owls (4) is replaced by snakes, compute for energy units following in completing the table below. Trophic Levels No. Individuals in Each Trophic Level No. of Units Received from Trophic Level Above No. Units Used / Individual (Resp) No. Units Used in Trophic Level No. Units Remaining & Passed on to Next Trophic Level Mean No. Units Available per Individual in Trophic Level SUN +E = 6 1) Plants 30 2 2) Grasshopper 19 2 3) Frog 12 2 4) Snake 8 + 4 = 12 2 5) Owl 0 2arrow_forwardWhich of these characteristics are true for consumers? They occupy the first level of a food web. They provide food for all other organisms. They make carbon dioxide available to plants. They can synthesize their own food.arrow_forward
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- Assume that a food chain consists of grass, rabbits, snakes, and eagles. Thus, snakes are classified as ______ consumers. Select one: Tertiary Primary Quaternary Secondaryarrow_forwardThe position of an organism within a food web is described by its trophic level. When modeling energy dynamics of a food web, losses of energy at these different levels produces a pyramid-shaped distribution of available energy. True or False?arrow_forwardA conceptual model representing the role, interaction, reaction, and density of essential ecosystem components is shown below. Examine the model and the relationships between the major players (i.e., predator, prey, producer). The structure's most important role is played by these major players. It's also worth noting that nutrition has been included in the model. This is the abiotic component that has a direct or indirect impact on the interaction. Question: Why does the organism’s interaction appear in an oscillating pattern? What does it suggest?arrow_forward
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