Chapter 7 - Ecology and Energy Flow (CCEA)

What is a community in ecological terms?

• A group of the same species

• Several populations of different species living together

• Only plants in an area

• Only animals in an area

Match the following terms to their descriptions

• R'ship between organism & Surroundings

• Population

• the no. of different species in an area

• Ecology

• area where a community of organisms live

• Biodiversity

• same species living in the same area

• Ecosystem

• different species living in habitat

• Community

What is the role of the Sun in an ecosystem?

• Provides water

• Provides energy

• Provides shelter

• Provides soil

What is the main reason for using random numbers to select quadrat locations?

• To make the process faster

• To avoid bias in sampling

• To find more animals

• To measure humidity

If a quadrat has a percentage cover of 60%, what does this mean?

• 60 plants are present

• 60% of the quadrat is covered by a plant species

• 60 quadrats were used

• 60% of the plants are counted

What is a quadrat?

• A square frame used to sample plants or animals in an area.

• A type of plant.

• A measuring tape.

• A kind of animal.

Why do grey squirrels have an advantage over red squirrels in mixed woodland?

• They can digest seeds such as acorns

• They are smaller and need less energy

• They are better at climbing trees

• They reproduce faster

What is the main difference between abiotic and biotic factors?

• Abiotic factors are living, biotic are non-living

• Abiotic factors are non-living, biotic are living

• Both are living

• Both are non-living

Which of these is NOT an abiotic factor?

• Wind

• pH

• Light

• competition

Which of the following statements is true about the competition among plants in sand dunes?

• All plants grow equally well everywhere

• Some plants outcompete others depending on abiotic conditions

• Only abiotic factors matter

• Only biotic factors matter