Question
Question 1(Multiple Choice Worth 2 points)
(5.02 MC)On a food web diagram, seagrass is labeled as a primary producer, and a manatee is labeled as a primary consumer. What is the reason for this difference?
Both are at the first level of the food web, but primary producers eat primary consumers.
Primary consumers use energy from the sun to make their own food, while primary producers feed on dead organic matter.
Primary producers make organic matter using inorganic nutrients and energy, while primary consumers eat primary producers.
Primary producers eat the primary consumers, which make food using photosynthesis.
Question 2(Multiple Choice Worth 2 points)
(5.02 MC)Orange roughy fish are a fourth-level consumer. We may see fifth- or sixth-level consumers, but not as many as at lower levels on a trophic pyramid. Why are the upper levels of a tropic pyramid limited?
Only a fraction of energy is passed through each level, so less energy is available to support upper-level consumers.
At the upper levels, consumers mainly eat each other, keeping their numbers low.
Humans typically hunt and eat upper-level consumers, so there are not as many of those consumers.
The energy flow is unbalanced and tends to move toward the lower levels.
Question 3(Multiple Choice Worth 2 points)
(5.02 MC)Loggerhead sea turtles eat a variety of things including vegetation, jellyfish, and crabs. Young loggerheads have many predators, but the large adults are generally safe from all except large sharks and seals. Where would the loggerhead appear on a food web?
It is a primary producer because it provides food for the seals and sharks.
It is usually a tertiary consumer because it eats three types of things.
It is a primary consumer because it has both predators and prey.
It is a primary and secondary consumer because it eats plants and animals.
Question 4(Multiple Choice Worth 2 points)
(5.02 LC)Which of the following is an example of a primary producer?
Worms
Clams
Plants
Bacteria
Question 5(Multiple Choice Worth 2 points)
(5.02 LC)Which of the following best describes a food web?
A series of organisms that are all dependent on one other organism for food
Groups of producers that are not eaten by any consumers
Predators that must leave an ecosystem to hunt for food
Several food chains in an ecosystem that are connected
Question 6(Multiple Choice Worth 2 points)
(5.02 MC)A shark eats a penguin that has recently been feeding on some krill. The penguin has 100 joules worth of energy, but the shark ultimately gains only about 10 joules. Where does the rest of the energy go?
It is destroyed and cannot be recovered.
It was used by the penguin as it tried to get away from the shark.
It is used for cell functions or transformed to heat energy.
It reverts back to the krill that the penguin ate.
Question 7(Multiple Choice Worth 2 points)
(5.02 MC)Why are decomposers such as bacteria important to an ecosystem's food web?
They recover nutrients from dead matter and waste.
They feed the primary producers.
They take in energy from inorganic compounds.
They provide nutrition directly to consumers.
(5.02 MC)On a food web diagram, seagrass is labeled as a primary producer, and a manatee is labeled as a primary consumer. What is the reason for this difference?
Both are at the first level of the food web, but primary producers eat primary consumers.
Primary consumers use energy from the sun to make their own food, while primary producers feed on dead organic matter.
Primary producers make organic matter using inorganic nutrients and energy, while primary consumers eat primary producers.
Primary producers eat the primary consumers, which make food using photosynthesis.
Question 2(Multiple Choice Worth 2 points)
(5.02 MC)Orange roughy fish are a fourth-level consumer. We may see fifth- or sixth-level consumers, but not as many as at lower levels on a trophic pyramid. Why are the upper levels of a tropic pyramid limited?
Only a fraction of energy is passed through each level, so less energy is available to support upper-level consumers.
At the upper levels, consumers mainly eat each other, keeping their numbers low.
Humans typically hunt and eat upper-level consumers, so there are not as many of those consumers.
The energy flow is unbalanced and tends to move toward the lower levels.
Question 3(Multiple Choice Worth 2 points)
(5.02 MC)Loggerhead sea turtles eat a variety of things including vegetation, jellyfish, and crabs. Young loggerheads have many predators, but the large adults are generally safe from all except large sharks and seals. Where would the loggerhead appear on a food web?
It is a primary producer because it provides food for the seals and sharks.
It is usually a tertiary consumer because it eats three types of things.
It is a primary consumer because it has both predators and prey.
It is a primary and secondary consumer because it eats plants and animals.
Question 4(Multiple Choice Worth 2 points)
(5.02 LC)Which of the following is an example of a primary producer?
Worms
Clams
Plants
Bacteria
Question 5(Multiple Choice Worth 2 points)
(5.02 LC)Which of the following best describes a food web?
A series of organisms that are all dependent on one other organism for food
Groups of producers that are not eaten by any consumers
Predators that must leave an ecosystem to hunt for food
Several food chains in an ecosystem that are connected
Question 6(Multiple Choice Worth 2 points)
(5.02 MC)A shark eats a penguin that has recently been feeding on some krill. The penguin has 100 joules worth of energy, but the shark ultimately gains only about 10 joules. Where does the rest of the energy go?
It is destroyed and cannot be recovered.
It was used by the penguin as it tried to get away from the shark.
It is used for cell functions or transformed to heat energy.
It reverts back to the krill that the penguin ate.
Question 7(Multiple Choice Worth 2 points)
(5.02 MC)Why are decomposers such as bacteria important to an ecosystem's food web?
They recover nutrients from dead matter and waste.
They feed the primary producers.
They take in energy from inorganic compounds.
They provide nutrition directly to consumers.
Answers
Answered by
GPT-4o mini
Here are the answers to your questions:
**Question 1:**
**Answer: C** - Primary producers make organic matter using inorganic nutrients and energy, while primary consumers eat primary producers.
**Question 2:**
**Answer: A** - Only a fraction of energy is passed through each level, so less energy is available to support upper-level consumers.
**Question 3:**
**Answer: D** - It is a primary and secondary consumer because it eats plants and animals.
**Question 4:**
**Answer: C** - Plants
**Question 5:**
**Answer: D** - Several food chains in an ecosystem that are connected
**Question 6:**
**Answer: C** - It is used for cell functions or transformed to heat energy.
**Question 7:**
**Answer: A** - They recover nutrients from dead matter and waste.
**Question 1:**
**Answer: C** - Primary producers make organic matter using inorganic nutrients and energy, while primary consumers eat primary producers.
**Question 2:**
**Answer: A** - Only a fraction of energy is passed through each level, so less energy is available to support upper-level consumers.
**Question 3:**
**Answer: D** - It is a primary and secondary consumer because it eats plants and animals.
**Question 4:**
**Answer: C** - Plants
**Question 5:**
**Answer: D** - Several food chains in an ecosystem that are connected
**Question 6:**
**Answer: C** - It is used for cell functions or transformed to heat energy.
**Question 7:**
**Answer: A** - They recover nutrients from dead matter and waste.