In the following passage, the numbered spaces can be filled with biological terms - AQA - A-Level Biology - Question 7 - 2023 - Paper 2
Question 7
In the following passage, the numbered spaces can be filled with biological terms.
An ecosystem supports a certain size of population of a species, called the
the ... show full transcript
Worked Solution & Example Answer:In the following passage, the numbered spaces can be filled with biological terms - AQA - A-Level Biology - Question 7 - 2023 - Paper 2
Step 1
(1) capacity
96%
114 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The correct term to fill in the first blank is carrying. This refers to the maximum population size of a species that an ecosystem can sustain over time.
Step 2
(2) niche
99%
104 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The second blank should be filled with niche. A niche represents the role or function of a species within its environment, encompassing how it fits into the ecosystem.
Step 3
(3) abiotic
96%
101 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
For the third blank, the appropriate term is abiotic. This pertains to the non-living factors in an ecosystem, such as sunlight, temperature, and water.
Step 4
(4) community
98%
120 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The final blank should be completed with community. This refers to a group of different species that live together in a particular area and interact with one another.
Step 5
Suggest two reasons for conserving rainforests.
97%
117 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
Conserving rainforests helps to protect biodiversity, as they are home to a large number of species.
Rainforests play a vital role in carbon sequestration, which reduces the effects of climate change.
Step 6
Give three reasons for the low efficiency of energy transfer from secondary consumers to tertiary consumers in an ecosystem.
97%
121 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
Energy is lost as heat through metabolic processes, which reduces the energy available for the next trophic level.
Not all of the food consumed is digested, resulting in energy loss as waste.
Tertiary consumers may not eat all secondary consumers, limiting energy transfer.
