The vast majority of energy taken into an ecosystem is____________. a. converted
ID: 13396 • Letter: T
Question
The vast majority of energy taken into an ecosystem is____________.a. converted into biomass by plants.
b. utilized by secondary consumers.
c. lost as heat.
d. used by the primary consumers.
e. concentrated in the decomposers.
A farmer is using an insecticide to treat his crops. While most insects do not survive their first exposure to the insecticide some have a gene that enables them to survive. When these survivors reproduce they will likely pass along this resistance to their offspring. This results in an increase in numbers of the insects over time. Which of the following processes applies to this survival?
a. cloning
b. mutation
c. natural selection
d. genetic engineering
What is the ecological relationship between insects and crops?
a. mutualism
b. competition
c. predation
Sea anemones growing on the backs of crabs without damaging the crabs are an example of
a. Parasitism
b. Commensalism
c. Mutualism
Which of these is a population density-independent regulating factor?
a. Competition
b. Predation
c. Size of population
d. Weather
e. Resource availability
Producers are_________.
a. Autotrophs
b. Herbivores
c. Omnivores
d. Carnivores
If biological magnification occurs, the ___ will have the highest levels of toxins in their systems.
a. producers
b. herbivores
c. primary carnivores
d. top carnivores
Given the amount of sunlight that hits the plants on our planet, and the ability of plants for rapid growth and reproduction, how come we aren’t all hip deep in dead plants?
Explanation / Answer
The vast majority of energy taken into an ecosystem is____________.
a. converted into biomass by plants.
b. utilized by secondary consumers.
c. lost as heat.
d. used by the primary consumers.
e. concentrated in the decomposers.
A farmer is using an insecticide to treat his crops. While most insects do not survive their first exposure to the insecticide some have a gene that enables them to survive. When these survivors reproduce they will likely pass along this resistance to their offspring. This results in an increase in numbers of the insects over time. Which of the following processes applies to this survival?
a. cloning
b. mutation
c. natural selection
d. genetic engineering
What is the ecological relationship between insects and crops?
a. mutualism
b. competition
c. predation
Sea anemones growing on the backs of crabs without damaging the crabs are an example of
a. Parasitism
b. Commensalism
c. Mutualism
Which of these is a population density-independent regulating factor?
a. Competition
b. Predation
c. Size of population
d. Weather
e. Resource availability
Producers are_________.
a. Autotrophs
b. Herbivores
c. Omnivores
d. Carnivores
If biological magnification occurs, the ___ will have the highest levels of toxins in their systems.
a. producers
b. herbivores
c. primary carnivores
d. top carnivores
Given the amount of sunlight that hits the plants on our planet, and the ability of plants for rapid growth and reproduction, how come we aren’t all hip deep in dead plants?
detrivores s, decomposers ,bacteria etc., ----will eat live on dead plants
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