Biomass

Last updated: 10/03/2022

AQA A-Level Biology Energy and ecosystems Biomass

Time limit: 0

Quiz Summary

0 of 23 Questions completed

Questions:

Information

You have already completed the quiz before. Hence you can not start it again.

Quiz is loading…

You must sign in or sign up to start the quiz.

You must first complete the following:

Results

Quiz complete. Results are being recorded.

Results

0 of 23 Questions answered correctly

Your time:

Time has elapsed

You have reached 0 of 0 point(s), (0)

Earned Point(s): 0 of 0, (0)
0 Essay(s) Pending (Possible Point(s): 0)

Categories

Not categorized 0%

Current
Review
Answered
Correct
Incorrect

Question 1 of 23

1. Question
Which organism eats both plants and animals?
- Omnivore
- Autotroph
- Carnivore
- Heterotroph
Correct

Incorrect
Question 2 of 23

2. Question
In an ecosystem the flow of nutrients is…
- Cyclic
- Triangular
- Bidirectional
- Unidirectional
Correct

Incorrect
Question 3 of 23

3. Question
Pyramids of numbers deal with number of…
- Individuals in a trophic level
- Species in an area
- Individuals in a community
- Subspecies in a community
Correct

Incorrect
Question 4 of 23

4. Question
Producers trap which type of sun energy?
- Light energy
- Heat energy
- Wind energy
- Chemical energy
Correct

Incorrect
Question 5 of 23

5. Question
Which percentage of energy is transferred from a lower energy tropic level to the next higher level?
- 0.1
- 0.7
- 0.6
- 0.05
Correct

Incorrect
Question 6 of 23

6. Question
In an ecosystem, energy flow is…
- Linear
- Triangular
- Rectangular
- Cyclic
Correct

Incorrect
Question 7 of 23

7. Question
Select the organism which obtains energy by eating other organisms
- Heterotroph
- Consumer
- Producer
- Omnivore
Correct

Incorrect
Question 8 of 23

8. Question
Select the organism which is at the lowest trophic level
- Algae
- Whale
- Eagle
- Rat
Correct

Incorrect
Question 9 of 23

9. Question
In a food chain, which organism has the most energy?
- Producer
- Omnivore
- Carnivore
- Consumer
Correct

Incorrect
Question 10 of 23

10. Question
The amount of energy which is transferred between trophic levels is measured by…
- Trophic level transfer efficiency (TLTE)
- Net production efficiency (NPE)
- Net consumer productivity
- Entropy
Correct

Incorrect
Question 11 of 23

11. Question
In a food chain how many levels of energy transfer can take place before all energy is used up?
- 6 levels
- 5 levels
- 2 levels
- 3 levels
Correct

Incorrect
Question 12 of 23

12. Question
Most energy loss in a food chain occurs in the form of…
- Heat energy
- Chemical energy
- Light energy
- Sound energy
Correct

Incorrect
Question 13 of 23

13. Question
As we move up the trophic levels, energy will…
- Decrease
- Increase
- Remain constant
- None of these
Correct

Incorrect
Question 14 of 23

14. Question
Biomass is calculated in terms of…
- Dry biomass
- Wet biomass
- The nitrogen component of an organism
- None of these
Correct

Incorrect
Question 15 of 23

15. Question
The position of an organism in a food chain is called…
- Trophic level transfer efficiency (TLTE)
- Food chain
- Food web
- Food pyramid
Correct

Incorrect
Question 16 of 23

16. Question
The number of organisms multiplied by their weight is…
- Biomass
- Ecosystem
- Food chain
- Food web
Correct

Incorrect
Question 17 of 23

17. Question
Trophic levels are formed because of…
- Different organisms linked in food chains
- Consumers
- Decomposers
- Producers
Correct

Incorrect
Question 18 of 23

18. Question
Higher trophic levels are often…
- Less efficient
- More efficient
- None of these
Correct

Incorrect
Question 19 of 23

19. Question
The energy flow in an ecosystem is…
- Unidirectional
- Bidirectional
- Non-existent
- Everywhere
Correct

Incorrect
Question 20 of 23

20. Question
Which of the below explains why the pyramid of energy is always upright?
- Carnivores do not have a higher energy conversion efficiency than herbivores
- All trophic levels have the same energy conversion efficiency
- Herbivores do not have as higher energy conversion efficiency than carnivores
- The lowest conversion efficiency is shown by producers
Correct

Incorrect
Question 21 of 23

21. Question
The pyramid of biomass is inverted in a…
- Fresh water ecosystem
- Tundra
- Grassland ecosystem
- Forest ecosystem
Correct

Incorrect
Question 22 of 23

22. Question
The pyramid of biomass of a pond ecosystem is…
- Upright
- Inverted
- Spindle shaped
- None of these
Correct

Incorrect
Question 23 of 23

23. Question
Productivity is at a maximum in which ecosystem?
- Ocean
- Land
- Desert
- Forest
Correct

Incorrect