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 ___ (1) ___ capacity. There are often numerous habitats within an ecosystem. Within a habitat, a species occupies a ___ (2) ___ governed by an adaption to both ___ (3) ___ and biotic conditions. Populations of different species form a ___ (4) ___. Write the correct biological term beside each number below that matches the space in the passage. Suggest two reasons for conserving rainforests. 1. _______________ 2. _______________ Give three reasons for the low efficiency of energy transfer from secondary consumers to tertiary consumers in an ecosystem. 1. _______________ 2. _______________ 3. _______________

A-Level AQA Biology 7.4 Populations in Ecosystems (A Level only): In the following passage, the nu

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

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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

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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

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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

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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.

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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.

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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.

In the following passage, the numbered spaces can be filled with biological terms - AQA - A-Level Biology - Question 7 - 2023 - Paper 2

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

(1) capacity

(2) niche

(3) abiotic

(4) community

Suggest two reasons for conserving rainforests.

Give three reasons for the low efficiency of energy transfer from secondary consumers to tertiary consumers in an ecosystem.

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