B7 Quiz - Ecosystems

Pregunta 1 de 19

1

OPEN LOOP:
Waste from one part of the process ❌ the loop.
❌ from the loop ❌ be used again.
Considered to be ❌.
The energy in these loops comes from the ❌ originally.

Arrastra y suelta para completar el texto.

leaves

Waste

cannot

unsustainable

sun

Explicación

Pregunta 2 de 19

1

CLOSED LOOP:
Loop can keep going round and round ❌.
Waste from one part of the loop becomes ❌ for the next part.
Considered to be environmentally ❌.
The ❌ in these loops comes from the sun originally.
Most cycles in ❌ are this type.

Arrastra y suelta para completar el texto.

forever

raw material

friendly

energy

nature

Explicación

Pregunta 3 de 19

1

Which of the following are examples of a closed loop system?

Selecciona una o más de las siguientes respuestas posibles:

Nitrogen cycle
Carbon cycle (when influenced heavily by human activity)
'Life cycle' of plastics
Rock cycle

Explicación

Pregunta 4 de 19

1

The flow of nutrients and minerals is a open loop system.

Selecciona uno de los siguientes:

VERDADERO
FALSO

Explicación

Pregunta 5 de 19

1

How does eating plant matter impact on a natural ecosystem?

Selecciona una de las siguientes respuestas posibles:

It kills the ecosystem.
it means we are removing sections of the natural loop to make a more man-made system

Explicación

Pregunta 6 de 19

1

When organisms produce large numbers of reproductive cells (such as pollen, sperm and eggs) or reproductive structures (such as flowers and fruit), these ensure that reproduction is likely to be successful.
The unsuccessful cells and structures are recycled into the ecosystem. They are usually used as nutrients for animals or microorganisms.

Selecciona uno de los siguientes:

VERDADERO
FALSO

Explicación

Pregunta 7 de 19

1

No ecosystem is a perfect closed loop system because of...

Selecciona una o más de las siguientes respuestas posibles:

death
animal migration
gas movement
humans

Explicación

Pregunta 8 de 19

1

Rellena el espacio en blanco para completar el texto.

is the process of land turning into deserts.

Explicación

Pregunta 9 de 19

1

A desert is a place with...

Selecciona una o más de las siguientes respuestas posibles:

low biodiversity
low rainfall
lots of vegetation
a varied climate
often (but not always) high temperatures

Explicación

Pregunta 10 de 19

1

Why does desertification happen?
- ❌
- over grazing
- intense farming
- ❌ farming techniques (❌ and burn)

Why do these cause desertification?
- leaves and ❌ slow down the rain, so it hits the ground with less ❌; without this, the soil quickly ❌ and is washed away
- vegetation soaks up water from the soil, so reduced ❌ increases the risk of surface ❌
- the roots would hold the soil together, preventing it from being ❌
Solutions to deforestation?
- windbreaks
- controlling ❌
- reforestation/❌

Arrastra y suelta para completar el texto.

deforestation

slash

poor

force

loosens

vegetation

flooding

blown away

stems

land use

afforestation

Explicación

Pregunta 11 de 19

1

In slash and burn agriculture, areas of rainforest are cleared and then burned to create a small piece of farmland.

Selecciona uno de los siguientes:

VERDADERO
FALSO

Explicación

Pregunta 12 de 19

1

Define 'ecological services'

Selecciona una de las siguientes respuestas posibles:

organisms providing services for other organisms, which rely on them
relating to or concerned with the relation of living organisms to one another and to their physical surroundings
a close and often long-term interaction between two different biological species

Explicación

Pregunta 13 de 19

1

Which of the following are NOT examples of ecological services?

Selecciona una o más de las siguientes respuestas posibles:

bees pollinating flowers
plants photosynthesising to produce oxygen
eutrophication
rubber from trees used in processes/production
two species of bird living in the same tree

Explicación

Pregunta 14 de 19

1

Put the steps of the eutrophication process in order.

Arrastra la opción correcta a cada uno de los puntos naranjas

Farmer puts fertiliser on his field

Fertilisers run off into water sources

The extra minerals cause an algal bloom

Algae cover surface, blocking the sun

plants below cannot photosynthesise

Microbes decompose the dead plants

Microbes require oxygen for respiration

increased levels of microbes uses up O2

Fish cannot respire as no oxygen

All the fish in the water die

Explicación

Pregunta 15 de 19

1

Rellena los espacios en blanco para completar el texto.

is when toxins build up in a food chain. The animals at the of the food chain are affected most severely.

This is what happens:

1.Small amounts of toxic substances - often from activity - are taken up by plants.

2.These plants are eaten by consumers.

3.The primary consumers are eaten by consumers, and the secondary consumers are by higher level consumers.

4.At each stage () of the food chain, harmless substances are excreted but the toxins remain in the tissues of the organisms - so the of toxin becomes most concentrated in the body tissues of the animals at the of the food chain.

An example of bioaccumulation is the use of DDT as an in the 1950s and 1960s. Birds of prey were badly affected because it made the shells of their eggs very , causing them to break easily when the birds tried to incubate them.

Explicación

Pregunta 16 de 19

1

The size of fish stocks depends on...

Selecciona una o más de las siguientes respuestas posibles:

... the amount/rate of fishing
... the level of pollution
... the amount of rain
... breeding rates
... saline quality of the water

Explicación

Pregunta 17 de 19

1

Overall, fish stocks are increasing due to pollution and levels of fishing.

Selecciona uno de los siguientes:

VERDADERO
FALSO

Explicación

Pregunta 18 de 19

1

What is meant by sustainable fishing?

Selecciona una de las siguientes respuestas posibles:

Leaving the fish to repopulate, then continue to fish at the same rate.
Only taking enough fish that the population is still able to maintain itself naturally.

Explicación

Pregunta 19 de 19

1

The following measures can be employed to promote sustainable fishing. Match the measure to the correct explanation.

Arrastra la opción correcta a cada uno de los puntos naranjas

Increase net mesh sizes

Reduce total net sizes

Ban fishing at certain times of the year

Establish no-fishing zones

Farming fish

Limit the number of days that boats fish

Set fishing quotas for maximum biomass

	Creado por Leah Firmstone hace alrededor de 8 años

GCSE (B7 - Further Biology) Biology Test sobre B7 Quiz - Ecosystems, creado por Leah Firmstone el 18/06/2016.

B7 Quiz - Ecosystems

Pregunta 1 de 19

OPEN LOOP: Waste from one part of the process ❌ the loop. ❌ from the loop ❌ be used again. Considered to be ❌. The energy in these loops comes from the ❌ originally.

Arrastra y suelta para completar el texto.

Explicación

Pregunta 2 de 19

CLOSED LOOP: Loop can keep going round and round ❌. Waste from one part of the loop becomes ❌ for the next part. Considered to be environmentally ❌. The ❌ in these loops comes from the sun originally. Most cycles in ❌ are this type.

Arrastra y suelta para completar el texto.

Explicación

Pregunta 3 de 19

Which of the following are examples of a closed loop system?

Selecciona una o más de las siguientes respuestas posibles:

Explicación

Pregunta 4 de 19

The flow of nutrients and minerals is a open loop system.

Selecciona uno de los siguientes:

Explicación

Pregunta 5 de 19

How does eating plant matter impact on a natural ecosystem?

Selecciona una de las siguientes respuestas posibles:

Explicación

Pregunta 6 de 19

Selecciona uno de los siguientes:

Explicación

Pregunta 7 de 19

No ecosystem is a perfect closed loop system because of...

Selecciona una o más de las siguientes respuestas posibles:

Explicación

Pregunta 8 de 19

Rellena el espacio en blanco para completar el texto.

is the process of land turning into deserts.

Explicación

Pregunta 9 de 19

A desert is a place with...

Selecciona una o más de las siguientes respuestas posibles:

Explicación

Pregunta 10 de 19

Arrastra y suelta para completar el texto.

Explicación

Pregunta 11 de 19

In slash and burn agriculture, areas of rainforest are cleared and then burned to create a small piece of farmland.

Selecciona uno de los siguientes:

Explicación

Pregunta 12 de 19

Define 'ecological services'

Selecciona una de las siguientes respuestas posibles:

Explicación

Pregunta 13 de 19

Which of the following are NOT examples of ecological services?

Selecciona una o más de las siguientes respuestas posibles:

Explicación

Pregunta 14 de 19

Put the steps of the eutrophication process in order.

Arrastra la opción correcta a cada uno de los puntos naranjas

Explicación

Pregunta 15 de 19

Rellena los espacios en blanco para completar el texto.

Explicación

Pregunta 16 de 19

The size of fish stocks depends on...

Selecciona una o más de las siguientes respuestas posibles:

Explicación

Pregunta 17 de 19

Overall, fish stocks are increasing due to pollution and levels of fishing.

Selecciona uno de los siguientes:

Explicación

Pregunta 18 de 19

What is meant by sustainable fishing?

Selecciona una de las siguientes respuestas posibles:

Explicación

Pregunta 19 de 19

The following measures can be employed to promote sustainable fishing. Match the measure to the correct explanation.

Arrastra la opción correcta a cada uno de los puntos naranjas

Explicación

OPEN LOOP:
Waste from one part of the process ❌ the loop.
❌ from the loop ❌ be used again.
Considered to be ❌.
The energy in these loops comes from the ❌ originally.

CLOSED LOOP:
Loop can keep going round and round ❌.
Waste from one part of the loop becomes ❌ for the next part.
Considered to be environmentally ❌.
The ❌ in these loops comes from the sun originally.
Most cycles in ❌ are this type.