Question 19 (2 points) Which of the following statements regarding species interactions is true? The herbivore-food resource relationship observed in many terrestrial systems is not observed in aquatic systems as a result of the stability of temperatures in aquatic habitats. Most zooplankton and phytoplankton (the food source for zooplankton) show correlated blooms in population in response to global warming. Plant growing season (time of breaking dormancy and length of growing season) is highly correlated with day length. Successful reproduction of many herbivore species depends on the timing of births being closely correlated with vegetation growth beginning at roughly the same time. Many animal mating rituals are triggered by changes in temperature. Question 20 (2 points) Climate has a direct influence on the key ecosystem processes of __________ and __________, thereby controlling the rates at which nutrients cycle through the ecosystem. net primary productivity; decomposition net primary productivity; secondary productivity nitrogen cycling; carbon cycling competition; predation
Added by Daniel H.
Close
Step 1
Step 1: Climate has a direct influence on key ecosystem processes such as net primary productivity, decomposition, nitrogen cycling, carbon cycling, competition, and predation. Show more…
Show all steps
Your feedback will help us improve your experience
Leyna Stemle and 60 other Biology educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
Which is an example of spatial structure in a biological community? In tropical rainforests, certain ant species live only in the canopy vegetation. Gastropod snails are often eaten by ducks. Certain lichens only live in the high northern latitudes. Ocean floor organisms have energy budgets adapted for low food availability. Which of the following statements about biological communities are NOT ACCURATE from a scientific standpoint? Each species in a biological community has a place in the circle of life, and each must help the others to survive. A biological community is an assemblage of plant, animal, fungal, and microbe populations that interact by means of such processes as trophic transfer, competition, and mutualism and commensalism. Biodiversity of communities is driven by such factors as trophic structure, temporal structure, productivity, history, and ecological succession. Disturbance is a process in community ecology that sometimes promotes overall biodiversity in an area by creating a patchwork of communities at different stages of ecological succession.
Dominador T.
QUESTION 6 The ecological model of the relationships that form a network of complex interactions among organisms in a community from producers to decomposers is a(n): A. trophic pyramid B. dominance hierarchy C. ecosystem D. food web E. food chain QUESTION 7 Food webs are more stable than food chains. True False QUESTION 8 A keystone species is one that affects community structure in a disproportionate amount in relation to its abundance. True False QUESTION 9 In the absence of a keystone predator on the rocky intertidal, Robert Paine found that ____________ were competitively dominant to all other sessile organisms. A. barnacles B. sea urchins C. mussels D. seastars E. kelp QUESTION 10 Elephants are not the most common species in African grasslands. The grasslands contain scattered woody plants, but they are kept in check by the uprooting activities of the elephants. Take away the elephants, and the grasslands convert to forests or to shrublands. The newly growing forests support fewer species than the previous grasslands. Elephants can be defined as what type of species in this community? A. redundant B. dominant C. keystone D. dominant and keystone E. none of the above
Sulav P.
1) Which of the following claims about marine ecosystem productivity is the most accurate? production in regions where there is higher micro- and macronutrient availability is highest production in the Antarctic Ocean is one of the lowest due to the colder water temperatures production near the equator is highest because reefs support a higher level of biodiversity production near the equator is highest because incoming solar radiation is the most intense 2) The producers in aquatic ecosystems include organisms in which of the following groups? plants cyanobacteria photoautotrophs algae All of the listed responses are correct. 3) Consider the food chain of grass → grasshopper → mouse → snake → hawk. About how much of the chemical energy fixed by photosynthesis of the grass (100 percent) is available to the hawk, assuming a 10% trophic efficiency? 10% 0.01% 1% 0.1%
Keemin L.
Recommended Textbooks
Biology for AP Courses
Objective Biology for NEET
Introduction to General, Organic and Biochemistry
Transcript
18,000,000+
Students on Numerade
Trusted by students at 8,000+ universities
Watch the video solution with this free unlock.
EMAIL
PASSWORD