Question 1

Question

Question 1
A)When a consumer eats a producer, 10 percent of the producer’s energy is passed on to the consumer trophic level. What happens to the other 90 percent?(1 point)
Responses

It is consumed and used by the consumer.
It is consumed and used by the consumer.

It is used by the producer to pass on to the next trophic level.
It is used by the producer to pass on to the next trophic level.

It is added back to the soil by decomposers.
It is added back to the soil by decomposers.

It is used for cell processes or released as heat.
It is used for cell processes or released as heat.
Question 2
A)Why is there less biomass at the top of the energy pyramid?(1 point)
Responses

Secondary and tertiary consumers have to consume a lot more food to support themselves, so there are fewer of them.
Secondary and tertiary consumers have to consume a lot more food to support themselves, so there are fewer of them.

Secondary and tertiary consumers are larger, so there are fewer of them.
Secondary and tertiary consumers are larger, so there are fewer of them.

Secondary and tertiary consumers have bigger ranges, so there are fewer of them because they each need a lot of space.
Secondary and tertiary consumers have bigger ranges, so there are fewer of them because they each need a lot of space.

Secondary and tertiary consumers live longer, so there are fewer of them because they reproduce more slowly.
Secondary and tertiary consumers live longer, so there are fewer of them because they reproduce more slowly.
Question 3
A)
Using the ten percent rule, determine how many kilocalories of energy the tertiary consumer tuna will receive.

Algae	Shrimp	Lantern Fish	Tuna
135,000 Kcal

(1 point)
Responses

135,000 Kcal
135,000 Kcal

135 Kcal
135 Kcal

13,500 Kcal
13,500 Kcal

1,350 Kcal
1,350 Kcal
Question 4
A)Read the following statements about various species of plants and animals. Based on these statements, which one would most likely be classified as an invasive species, and not just a non-native species, in the United States?(1 point)
Responses

Species A is a plant from Eurasia. It is often considered a weed by homeowners and killed by using an herbicide. This plant can be consumed in salads or as a tea and is the first food resource for bees in the spring. It does not grow uncontrollably.
Species A is a plant from Eurasia. It is often considered a weed by homeowners and killed by using an herbicide. This plant can be consumed in salads or as a tea and is the first food resource for bees in the spring. It does not grow uncontrollably.

Species B is from Europe and can sting people. This species is often farmed in America for its ability to pollinate and provide honey.
Species B is from Europe and can sting people. This species is often farmed in America for its ability to pollinate and provide honey.

Species C, a plant from Japan, was introduced as a foliage crop and to reduce soil erosion. It grows up to a foot per day, smothering low-growing plants and killing trees. It has no natural predators.
Species C, a plant from Japan, was introduced as a foliage crop and to reduce soil erosion. It grows up to a foot per day, smothering low-growing plants and killing trees. It has no natural predators.

Species D, native to Eurasia, has been released in various American states to combat the invasive plant, purple loosestrife. It does not affect other native plants.
Species D, native to Eurasia, has been released in various American states to combat the invasive plant, purple loosestrife. It does not affect other native plants.
Question 5
A)
Use the following formula to find the efficiency of energy transfer between the harbor seal (2,500 Kcal) and a polar bear (375 Kcal).

(Energy level transfered to next level)(Total energy input) × 100

(1 point)
Responses

20%
20%

15%
15%

12%
12%

10%
10%

GPT-4o mini · Answer

Here are the responses to the questions you provided:

Question 1 A) When a consumer eats a producer, 10 percent of the producer’s energy is passed on to the consumer trophic level. What happens to the other 90 percent?
Response: It is used for cell processes or released as heat.

Question 2 A) Why is there less biomass at the top of the energy pyramid?
Response: Secondary and tertiary consumers have to consume a lot more food to support themselves, so there are fewer of them.

Question 3 A) Using the ten percent rule, determine how many kilocalories of energy the tertiary consumer tuna will receive.

Algae: 135,000 Kcal (primary producer)
Shrimp: 13,500 Kcal (primary consumer)
Lantern Fish: 1,350 Kcal (secondary consumer)
Response: 1,350 Kcal

Question 4 A) Based on the statements provided, which one would most likely be classified as an invasive species, and not just a non-native species, in the United States?
Response: Species C, a plant from Japan, was introduced as a foliage crop and to reduce soil erosion. It grows up to a foot per day, smothering low-growing plants and killing trees. It has no natural predators.

Question 5 A) Use the following formula to find the efficiency of energy transfer between the harbor seal (2,500 Kcal) and a polar bear (375 Kcal). (Energy level transferred to next level) / (Total energy input) × 100

Calculation:
(375 Kcal / 2500 Kcal) × 100 = 15%
Response: 15%

Feel free to ask if you have any more questions!