Question

The population of which of the following organisms would most likely decline if small animals like rats, rabbits, and snakes were eliminated from an ecosystem?
Question Blank 1 of 1

Question at position 6
6

Fill in the Blank
4 points


Question at position 6

Which of the following relationships exists between the frog and the mayfly?
Question Blank 1 of 1

Question at position 7
7

Multiple Choice
4 points


Question at position 7

The ecological relationship between a hawk and a rabbit is the same type of relationship as
that between -
The ecological relationship between a hawk and a rabbit is the same type of relationship as
that between -

a bee and a flowering plant

a tick and a deer

a mouse and a chipmunk

a frog and an insect
Question at position 8
8

Multiple Choice
5 points


Question at position 8

Why is a food web more useful than a food chain to predict the survival of a population?
Why is a food web more useful than a food chain to predict the survival of a population?

Food webs show more information about the habitats

Food webs show more predator and prey interactions

Food chains show fewer organisms

Food chains are limited to relationships between consumers
Question at position 9
9

Multiple Choice
5 points


Question at position 9

Wolves get energy from eating rabbits. Rabbits get energy from eating grass. The grass
makes its own food energy. If many wolves were killed, then -
Wolves get energy from eating rabbits. Rabbits get energy from eating grass. The grass
makes its own food energy. If many wolves were killed, then -

there would be more rabbits

less grass would be eaten

there would be fewer rabbits

more grass would grow
Question at position 10
10

Fill in the Blank
4 points


Question at position 10
Which of these shows a relationship between the lizard and the grasshopper?
Question Blank 1 of 1

Question at position 11
11

Multiple Choice
5 points


Question at position 11


The graph shown represents a predator-prey relationship. What is the most probable reason
for the increasing predator population from day 5 to day 6?

The graph shown represents a predator-prey relationship. What is the most probable reason
for the increasing predator population from day 5 to day 6?

the extinction of the yeast on day 3 and day 10

the decreasing prey population from day 1 to day 2

an increasing food supply from day 5 to day 6

a predator population equal in size to the prey population from day 5 to day 6
Question at position 12
12

Hot Spot
4 points


Question at position 12
Click on the predator.
Keyboard controls are available while using the hotspot. Press S to select a point and use the arrow keys to move it, press D to save the position, and press Backspace or Delete to clear all selections. Just make sure the image is focused to use these controls.
Target Image
Question at position 13
13

Hot Spot
4 points


Question at position 13
Click on the prey.
Keyboard controls are available while using the hotspot. Press S to select a point and use the arrow keys to move it, press D to save the position, and press Backspace or Delete to clear all selections. Just make sure the image is focused to use these controls.
Target Image
Question at position 14
14

Fill in the Blank
4 points


Question at position 14

Which of these terms best describes the relationship between crows and the black skimmer eggs?
Question Blank 1 of 1

Question at position 15
15

Multiple Choice
5 points


Question at position 15

The eagles are removed from a grassland ecosystem.
What effect will this most likely have on the ecosystem?
The eagles are removed from a grassland ecosystem.
What effect will this most likely have on the ecosystem?

a decrease in the quality of soil

a decrease in the population of other carnivores

an increase in the population of mice
Question at position 16
16

Multiple Choice
5 points


Question at position 16

This diagram represents a food web for a community of organisms.

A disease causes the rabbit population to decline drastically. How would this decline in the rabbit population impact the community?
This diagram represents a food web for a community of organisms.

A disease causes the rabbit population to decline drastically. How would this decline in the rabbit population impact the community?

The grasshopper population would decrease.

The mouse population would decrease.

The fox population would decrease.

The snake population would decrease.
Question at position 17
17

Hot Spot
4 points


Question at position 17
Click on the name of the predator in this food chain.
Keyboard controls are available while using the hotspot. Press S to select a point and use the arrow keys to move it, press D to save the position, and press Backspace or Delete to clear all selections. Just make sure the image is focused to use these controls.
Target Image
Question at position 18
18

Multiple Choice
5 points


Question at position 18

Rabbits introduced into Australia over 100 years ago have become a serious pest to farmers. Rabbit populations increased so much that they displaced many native species of plant eaters. What is the most logical explanation for their increased numbers?
Rabbits introduced into Australia over 100 years ago have become a serious pest to farmers. Rabbit populations increased so much that they displaced many native species of plant eaters. What is the most logical explanation for their increased numbers?

Additional rabbit species have been introduced.

Rabbits have a high death rate.

There are few effective predators.

There is an increase in rabbit competitors.
Question at position 19
19

Multiple Choice
4 points


Question at position 19


The relationship between the mice and the insects is an example of -

The relationship between the mice and the insects is an example of -

mutualism

parasite-host

predator-prey

commensalism
Question at position 20
20

Multiple Choice
5 points


Question at position 20

In the longstanding war between coyotes and sheep ranchers in New Mexico, studies show that coyotes kill sheep and the percentage of sheep lost from herds in areas where coyotes have been exterminated is about the same as the percentage lost in areas where coyotes are still present.

What is the most likely explanation for the similarity in the percentage of sheep lost in both areas?
In the longstanding war between coyotes and sheep ranchers in New Mexico, studies show that coyotes kill sheep and the percentage of sheep lost from herds in areas where coyotes have been exterminated is about the same as the percentage lost in areas where coyotes are still present.

What is the most likely explanation for the similarity in the percentage of sheep lost in both areas?

Coyotes were preying on sick or weak sheep.

The sheep died from overcrowding.

Another predator was killing the sheep.

Coyotes were protecting the sheep.
Question at position 21
21

Multiple Choice
5 points


Question at position 21

In an ecosystem, mice are being preyed upon by hawks.

What would be predicted about the population of hawks after time X?
In an ecosystem, mice are being preyed upon by hawks.

What would be predicted about the population of hawks after time X?

emigration of hawks to another area

a leveling off of the hawk population

a continued decline in the number of hawks

an increase in the number of hawks
Question at position 22
22

Fill in the Blank
4 points


Question at position 22

Aphids are insects that feed on fluids from the stems of plants. After aphids ingest the plant fluids, they excrete a liquid called honeydew.
Ladybugs eat aphids, which are a source of protein for the ladybugs.
Which of these terms best describes the relationship between the ladybugs and the aphids?
Question Blank 1 of 1

Answer 1

Here are the responses to your questions based on common ecological principles:

1. **Fill in the Blank - The population of which of the following organisms would most likely decline if small animals like rats, rabbits, and snakes were eliminated from an ecosystem?**
- **Answer**: Larger predators (e.g., foxes, hawks, or other carnivores) that rely on these small animals for food.

2. **Which of the following relationships exists between the frog and the mayfly?**
- **Answer**: Predator-prey relationship.

3. **The ecological relationship between a hawk and a rabbit is the same type of relationship as that between -**
- **Answer**: a frog and an insect (both are predator-prey relationships).

4. **Why is a food web more useful than a food chain to predict the survival of a population?**
- **Answer**: Food webs show more predator and prey interactions.

5. **If many wolves were killed, then -**
- **Answer**: there would be more rabbits (as the predator population decreases, the prey population tends to increase).

6. **Fill in the Blank - Which of these shows a relationship between the lizard and the grasshopper?**
- **Answer**: Predator-prey relationship (assuming the lizard eats the grasshopper).

7. **The most probable reason for the increasing predator population from day 5 to day 6?**
- **Answer**: an increasing food supply from day 5 to day 6.

8. **[Click on the predator.]**
- **Answer**: (This would depend on the specific image provided.)

9. **[Click on the prey.]**
- **Answer**: (This would depend on the specific image provided.)

10. **Fill in the Blank - Which of these terms best describes the relationship between crows and the black skimmer eggs?**
- **Answer**: Predation (or perhaps parasitism if applicable).

11. **The effect of removing eagles from a grassland ecosystem?**
- **Answer**: an increase in the population of mice (as a top predator is removed, the prey population may rise).

12. **The impact of a disease causing a rabbit population decline on the community?**
- **Answer**: The fox population would decrease (as rabbits are likely a food source for foxes).

13. **[Click on the name of the predator in this food chain.]**
- **Answer**:(This would depend on the specific image provided.)

14. **The most logical explanation for the increased rabbit populations in Australia?**
- **Answer**: There are few effective predators.

15. **The relationship between the mice and the insects:**
- **Answer**: predator-prey.

16. **The similarity in the percentage of sheep lost in both areas (coyotes and sheep ranchers)?**
- **Answer**: Coyotes were preying on sick or weak sheep.

17. **What would be predicted about the population of hawks after time X?**
- **Answer**: a leveling off of the hawk population (as populations tend to stabilize over time).

18. **Fill in the Blank - The relationship between ladybugs and aphids?**
- **Answer**: Predator-prey relationship.

Feel free to ask if you have more specific questions or if you need further explanations!