| Date | November 2016 | Marks available | 1 | Reference code | 16N.1.SL.TZ0.18 |
| Level | Standard level | Paper | Paper 1 | Time zone | TZ0 |
| Command term | Deduce | Question number | 18 | Adapted from | N/A |
Question
What restricts the length of a food chain?
A. Energy losses between the trophic levels
B. A greater biomass at the higher trophic levels
C. The number of species in the food web
D. The consumption of waste by detritivores
Markscheme
A
Examiners report
[N/A]
Syllabus sections
Show 53 related questions
- 17M.3.HL.TZ1.13c: Distinguish between mutualism and parasitism, providing another example of mutualism and...
- 17M.2.HL.TZ2.4c: Outline the energy flow through this food web.
- 17M.2.HL.TZ2.4a.ii: Using the food web, identify a saprotroph.
- 17M.2.HL.TZ1.1f.ii: Suggest a reason for the greater expression of the gene for the urea transporter after an...
- 17M.2.SL.TZ1.2d: Explain the role of decomposers in an ecosystem.
- 17M.2.SL.TZ1.1c: Estimate how much smaller drilled oysters raised in seawater at a high CO2 concentration were...
- 17M.1.SL.TZ2.27: The bacterium Neisseria gonorrhoeae causes infections related to the human reproductive...
- 17M.1.SL.TZ2.17: What is lost between trophic levels in ecosystems and cannot be recycled? A. Heat B....
- 17M.1.SL.TZ1.21: Cladograms can be created by comparing DNA or protein sequences. The cladogram on the left is...
- 16M.2.HL.TZ0.7b: Outline how the energy flow through food chains limits their length.
- 16N.2.HL.TZ0.8c: Describe how energy flows through and is used by organisms in ecosystems.
- 16N.2.SL.TZ0.7c: Draw a labelled diagram of a pyramid of energy.
- 16N.2.SL.TZ0.7a: Explain the processes by which energy enters and flows through ecosystems.
- 16N.2.SL.TZ0.1f: Identify an example of competition between organisms in this food web.
- 16N.2.SL.TZ0.1e: The trout, Oncorhynchus mykiss, that live in West Brush Creek and Cement Creek also feed on...
- 16M.1.HL.TZ0.25: The diagram represents a pyramid of energy. What level does the letter X represent? A....
- 16M.1.HL.TZ0.24: The statement is about the role of some bacteria in ecosystems. What is the mode of...
- 16M.1.SL.TZ0.18: What limits the length of food chains in an ecosystem? A. The size of individual organismsB....
- 16M.1.SL.TZ0.17: Which category of organisms is correctly described by its method of nutrition and site of...
- 15M.1.SL.TZ2.19: The following statements refer to a pyramid of energy. I. Some material is not assimilated...
- 15M.2.SL.TZ2.3a: Describe what is meant by a food chain.
- 15M.2.SL.TZ2.3b (i): Identify a food chain with four or more organisms from the forest food web.
- 17N.2.SL.TZ0.04b: Outline why the number of trophic levels is limited in a food chain.
- 15M.2.SL.TZ2.3b (ii): Deduce the trophic level of each organism identified in your food chain from (b)(i).
- 13M.2.HL.TZ2.6b: Ecologists sometimes display data from an ecosystem using a diagram called a pyramid of...
- 13M.2.SL.TZ2.7b: Ecologists sometimes display data from an ecosystem using a diagram called a pyramid of...
- 13N.1.HL.TZ0.16: The following shows an energy pyramid.How is energy lost between the trophic levels?A....
- 13M.1.SL.TZ2.19: At each trophic level energy is lost. How is this energy regained by the ecosystem? A....
- 13N.2.HL.TZ0.3b: Distinguish between the movement of energy and nutrients in an ecosystem.
- 11M.2.HL.TZ2.4c: Discuss reasons why the levels of a pyramid of energy differ in size.
- 11M.3.SL.TZ1.20b: Explain why the carnivores in an ecosystem tend to be fewer in number and have a smaller...
- 12M.1.HL.TZ2.16: The energy passing from the detritivores to the predatory invertebrates in this food web is...
- 12M.1.HL.TZ2.17: To which trophic level do the butterflies belong? A. Producers B. Primary consumers C....
- 12M.1.SL.TZ1.19: What is recycled in an ecosystem? A. Nitrogen, carbon and energy are all recycled. B....
- 12M.1.SL.TZ2.18: The energy passing from the detritivores to the predatory invertebrates in this food web is...
- 12M.2.SL.TZ1.5c: Explain the flow of energy between trophic levels in ecosystems.
- 09M.2.SL.TZ2.4b: Explain the shape of the pyramids of energy that are constructed by ecologists to represent...
- 09M.1.SL.TZ1.19: The following diagram shows part of a food web from Yellowstone Park. What would be the...
- 09M.1.SL.TZ1.21: Why do food chains in an ecosystem rarely contain more than five organisms? A. Nutrients are...
- 09M.1.HL.TZ2.21: The scarlet cup fungus (Sarcoscypha coccinea) obtains its nutrition from decaying wood by...
- 10M.1.SL.TZ1.19: What are the units of a pyramid of energy? A. kJ m-2 yr-1 B. kJ m-1 yr-1 C. J m-3 s-1 D. J...
- 10M.1.SL.TZ2.19: What will happen to the food web above if the sea otter disappears? A. Large fish increase...
- 10M.1.SL.TZ2.20: Which organism in this food web is both a secondary and tertiary consumer? A. Large crab B....
- 10M.1.HL.TZ1.16: What are the units of a pyramid of energy? A. kJ m-2 yr-1B. kJ m-1 yr-1 C. J m-3 s-1 D. J m2...
- 10M.2.SL.TZ2.6a: Describe the movement of energy and nutrients in an ecosystem.
- 09N.1.HL.TZ0.16: How is energy passed from one trophic level to the next? I. FoodII. LightIII. Heat A. I...
- 11N.2.SL.TZ0.3b (ii): State the initial energy source of the food chain constructed in (b)(i).
- 11N.2.SL.TZ0.3b (i): Construct a possible food chain using three of the organisms shown opposite, stating the...
- 12N.1.HL.TZ0.13: The diagram shows a pyramid of energy for a wetland environment. What units would be...
- 12N.2.SL.TZ0.6b: Outline how energy flows through an ecosystem.
- 10N.2.SL.TZ0.5b: Describe what is meant by a food chain and a food web.
- 10N.2.HL.TZ0.6b: Describe what is meant by a food chain and a food web.
- 09N.2.SL.TZ0.1c: Suggest reasons for the difference in numbers of L. strigatella between the areas where...
