Question

Question

Which trophic level is always a necessity in an energy pyramid or food chain?(1 point)
Responses

secondary consumer
secondary consumer

primary consumer
primary consumer

producer
producer

tertiary consumer

Answer 1

producer

Answer 2

In a food chain, with each feeding relationship, the energy transferred from one organism to another will(1 point)
Responses

decrease.
decrease.

remain constant.
remain constant.

increase.
increase.

be independent of the level.
be independent of the level.

Answer 3

decrease.

Answer 4

The black bear is common to North America. Black bears eat many foods, mainly grass, roots, berries, and insects. However, fish and mammals—including those already dead—are also part of their diet. Some tend to wander near campsites and can develop a taste for human food and garbage. Given this information, which term most accurately characterizes black bears? (1 point)
Responses

carnivores
carnivores

decomposers
decomposers

omnivores
omnivores

producers

Answer 5

omnivores

Answer 6

If producers generate 100% of the energy, what percentage of that energy is left by the time it reaches tertiary consumers?(1 point)
Responses

0.1%
0.1%

10%
10%

100%
100%

1%
1%

Answer 7

10%

Answer 8

Animals obtain their nitrogen from(1 point)
Responses

plants.
plants.

nitrites.
nitrites.

bacteria.
bacteria.

nitrates.

Answer 9

plants

Answer 10

Which of the following can be classified as a decomposer?(1 point)
Responses

corn
corn

owl
owl

frog
frog

fungus

Answer 11

fungus

Answer 12

Select the most accurate example of a food chain.(1 point)
Responses

snake → rabbit → grass → hawk
snake → rabbit → grass → hawk

rabbit → hawk → grass → snake
rabbit → hawk → grass → snake

hawk → snake → rabbit → grass
hawk → snake → rabbit → grass

grass → rabbit → snake → hawk
grass → rabbit → snake → hawk

Answer 13

snake → rabbit → grass → hawk

Answer 14

explain

Answer 15

In a food chain, energy flows from one organism to another through feeding relationships. The first organism in the chain is typically a producer, such as plants or algae, which convert sunlight into usable energy through the process of photosynthesis. The energy from the producers is then transferred to the primary consumers, which are herbivores that feed directly on the producers. In the given example, the snake is the primary consumer as it feeds on the rabbits, which are herbivores that consume grass. The energy is then transferred from the primary consumers (rabbits) to the secondary consumers (snake) through predation. Finally, the energy reaches the tertiary consumers, represented by the hawk, which feeds on the primary consumers (snake). This example of the food chain illustrates the transfer of energy from the producer (grass) to the primary consumer (rabbit), followed by the secondary consumer (snake), and ultimately reaching the tertiary consumer (hawk).

Answer 16

so the food chain is actually

Answer 17

grass → rabbit → snake → hawk

Answer 18

Which of the following can be classified as a producer?(1 point)
Responses

corn
corn

snake
snake

deer
deer

bear

Answer 19

corn