A jackal is a tertiary consumer. Tertiary consumers are typically carnivorous animals that eat primary and secondary consumers. In this context, jackals, being scavengers and predators, fit that role.
which animal is a tertiary consumer?
(1 point)
Responses
jackal
jackal
mouse
mouse
lion
lion
rabbit
11 answers
The following diagram shows a typical food pyramid:
Hawks
Snakes
Mice
Grass
If 100,000 kJ of energy is available to the producers, how much energy is available to the secondary consumers in this food pyramid?
(1 point)
Responses
10 kJ
10 kJ
1,000 kJ
1,000 kJ
10,000 kJ
10,000 kJ
100 kJ
Hawks
Snakes
Mice
Grass
If 100,000 kJ of energy is available to the producers, how much energy is available to the secondary consumers in this food pyramid?
(1 point)
Responses
10 kJ
10 kJ
1,000 kJ
1,000 kJ
10,000 kJ
10,000 kJ
100 kJ
In a typical food pyramid, energy decreases by a factor of 10 at each level as you move up from producers (plants) to primary consumers (herbivores) to secondary consumers (carnivores).
If there is 100,000 kJ of energy available to the producers (grass), the energy available to the primary consumers (mice) would be:
100,000 kJ ÷ 10 = 10,000 kJ
Then, the energy available to the secondary consumers (snakes) would be:
10,000 kJ ÷ 10 = 1,000 kJ
So, the answer is 1,000 kJ.
The ultimate source of energy for most organisms is(1 point)
Responses
the sun.
the sun.
oxygen.
oxygen.
carbon dioxide.
carbon dioxide.
glucose.
Responses
the sun.
the sun.
oxygen.
oxygen.
carbon dioxide.
carbon dioxide.
glucose.
The ultimate source of energy for most organisms is the sun.
Which of the following is the best evidence that supports the rule that only 10% of energy is transferred from one organism to another?(1 point)
Responses
Not all organisms at the lower trophic levels will be eaten and die.
Not all organisms at the lower trophic levels will be eaten and die.
There are fewer organisms at the top of the food chain because there is less energy available for life processes.
There are fewer organisms at the top of the food chain because there is less energy available for life processes.
Dead organisms and waste are broken down by decomposers and are recycled through the ecosystem.
Dead organisms and waste are broken down by decomposers and are recycled through the ecosystem.
Ten percent of organisms are fully consumed while others contain some molecules that cannot be digested.
Responses
Not all organisms at the lower trophic levels will be eaten and die.
Not all organisms at the lower trophic levels will be eaten and die.
There are fewer organisms at the top of the food chain because there is less energy available for life processes.
There are fewer organisms at the top of the food chain because there is less energy available for life processes.
Dead organisms and waste are broken down by decomposers and are recycled through the ecosystem.
Dead organisms and waste are broken down by decomposers and are recycled through the ecosystem.
Ten percent of organisms are fully consumed while others contain some molecules that cannot be digested.
The best evidence that supports the rule that only 10% of energy is transferred from one organism to another is:
There are fewer organisms at the top of the food chain because there is less energy available for life processes.
This statement illustrates the concept of energy transfer in an ecosystem and explains why higher trophic levels have fewer organisms due to the diminishing energy available as you move up the food chain.
What can be used to measure primary productivity in an ecosystem?(1 point)
Responses
carbon dioxide consumption
carbon dioxide consumption
water consumption
water consumption
sugar consumption
sugar consumption
oxygen consumption
Responses
carbon dioxide consumption
carbon dioxide consumption
water consumption
water consumption
sugar consumption
sugar consumption
oxygen consumption
Carbon dioxide consumption can be used to measure primary productivity in an ecosystem. During photosynthesis, plants take in carbon dioxide and convert it into organic matter, so measuring the amount of carbon dioxide consumed can provide insights into the primary productivity of the ecosystem.
Read the following statement and choose the option that has the respective answers in the correct order.
“Chemical energy input converted from the sun occurs via __________ in plants or ingesting food in animals; this energy drives the flow of matter into and out of the cell. The chemical energy is inefficiently converted into usable energy by __________, because all the stored energy is not converted into ATP some of it is released into the ecosystem as ____________.”
(1 point)
Responses
respiration; photosynthesis; heat
respiration; photosynthesis; heat
respiration; photosynthesis; waste
respiration; photosynthesis; waste
photosynthesis; respiration; waste
photosynthesis; respiration; waste
photosynthesis; respiration; heat
“Chemical energy input converted from the sun occurs via __________ in plants or ingesting food in animals; this energy drives the flow of matter into and out of the cell. The chemical energy is inefficiently converted into usable energy by __________, because all the stored energy is not converted into ATP some of it is released into the ecosystem as ____________.”
(1 point)
Responses
respiration; photosynthesis; heat
respiration; photosynthesis; heat
respiration; photosynthesis; waste
respiration; photosynthesis; waste
photosynthesis; respiration; waste
photosynthesis; respiration; waste
photosynthesis; respiration; heat
The correct option is:
photosynthesis; respiration; heat
This completes the statement accurately as it reflects the processes by which energy is converted and utilized in plants and animals.
1 answer