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Biology > B4 AQA GCSE Bioligy > Flashcards

B4 AQA GCSE Bioligy Flashcards

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1
Q

What is a community in ecological terms?

A

A community is a group of different species that live together in the same area and interact with each other.

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2
Q

True or False: A population consists of individuals of the same species living in a specific area.

A

True

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3
Q

Fill in the blank: The __________ includes all the living organisms in a specific area.

A

community

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4
Q

What is the role of producers in an ecosystem?

A

Producers convert sunlight into energy through photosynthesis, forming the base of the food chain.

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5
Q

What are consumers?

A

Consumers are organisms that obtain energy by feeding on other organisms.

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6
Q

Define the term ‘keystone species’.

A

A keystone species is a species that has a disproportionately large effect on its environment relative to its abundance.

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7
Q

Multiple Choice: Which of the following is a primary consumer? A) Grass B) Rabbit C) Fox

A

B) Rabbit

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8
Q

What is the difference between autotrophs and heterotrophs?

A

Autotrophs produce their own food, while heterotrophs obtain food by consuming other organisms.

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9
Q

True or False: Decomposers break down dead organic matter and recycle nutrients back into the ecosystem.

A

True

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10
Q

What is a trophic level?

A

A trophic level is a position in a food chain or food web that indicates the flow of energy and nutrients.

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11
Q

Fill in the blank: In a food chain, energy decreases as you move up to higher __________.

A

trophic levels

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12
Q

Define ‘biodiversity’.

A

Biodiversity refers to the variety of life in a particular habitat or ecosystem.

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13
Q

Multiple Choice: Which factor does NOT affect community structure? A) Climate B) Soil type C) Individual behavior

A

C) Individual behavior

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14
Q

What is ecological succession?

A

Ecological succession is the process by which ecosystems change and develop over time.

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15
Q

True or False: Primary succession occurs in lifeless areas where soil has not yet formed.

A

True

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16
Q

What is a climax community?

A

A climax community is a stable and mature community that undergoes little change in species composition.

17
Q

Fill in the blank: __________ species are species that are introduced to a new habitat and can disrupt the local ecosystem.

A

Invasive

18
Q

What is the significance of food webs in ecosystems?

A

Food webs illustrate the complex interconnections between different species and their roles in energy transfer.

19
Q

Multiple Choice: Which is an example of a secondary consumer? A) Grasshopper B) Owl C) Plant

A

B) Owl

20
Q

Define the term ‘habitat’.

A

A habitat is the natural environment in which a species or community of species lives.

21
Q

What is the impact of habitat destruction on biodiversity?

A

Habitat destruction leads to loss of species and decreased biodiversity.

22
Q

True or False: Symbiotic relationships can be beneficial, harmful, or neutral.

A

True

23
Q

What is mutualism?

A

Mutualism is a symbiotic relationship where both species benefit from the interaction.

24
Q

Fill in the blank: __________ is the process by which species evolve and adapt to their environment over time.

A

Natural selection

25
Q

What is an ecosystem?

A

An ecosystem is a community of living organisms interacting with their physical environment.

26
Q

Multiple Choice: Which of the following is a biotic factor? A) Water B) Temperature C) Plants

A

C) Plants

27
Q

What role do nutrients play in ecosystems?

A

Nutrients are essential for the growth and survival of organisms and are cycled through ecosystems.

28
Q

True or False: Energy can be recycled within an ecosystem.

A

False

29
Q

What is a niche?

A

A niche is the role or function of an organism or species within an ecosystem.

30
Q

Fill in the blank: The __________ cycle describes the movement of water through the environment.

A

water

31
Q

What is the primary source of energy for most ecosystems?

A

The primary source of energy for most ecosystems is sunlight.

Biology (1 decks)

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