B7 Quiz - Ecosystems

Question 1 of 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.

Drag and drop to complete the text.

leaves

Waste

cannot

unsustainable

sun

Explanation

Question 2 of 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.

Drag and drop to complete the text.

forever

raw material

friendly

energy

nature

Explanation

Question 3 of 19

1

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

Select one or more of the following:

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

Explanation

Question 4 of 19

1

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

Select one of the following:

True
False

Explanation

Question 5 of 19

1

How does eating plant matter impact on a natural ecosystem?

Select one of the following:

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

Explanation

Question 6 of 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.

Select one of the following:

True
False

Explanation

Question 7 of 19

1

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

Select one or more of the following:

death
animal migration
gas movement
humans

Explanation

Question 8 of 19

1

Fill the blank space to complete the text.

is the process of land turning into deserts.

Explanation

Question 9 of 19

1

A desert is a place with...

Select one or more of the following:

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

Explanation

Question 10 of 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/❌

Drag and drop to complete the text.

deforestation

slash

poor

force

loosens

vegetation

flooding

blown away

stems

land use

afforestation

Explanation

Question 11 of 19

1

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

Select one of the following:

True
False

Explanation

Question 12 of 19

1

Define 'ecological services'

Select one of the following:

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

Explanation

Question 13 of 19

1

Which of the following are NOT examples of ecological services?

Select one or more of the following:

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

Explanation

Question 14 of 19

1

Put the steps of the eutrophication process in order.

Drag an answer into the correct orange point.

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

Explanation

Question 15 of 19

1

Fill the blank spaces to complete the text.

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.

Explanation

Question 16 of 19

1

The size of fish stocks depends on...

Select one or more of the following:

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

Explanation

Question 17 of 19

1

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

Select one of the following:

True
False

Explanation

Question 18 of 19

1

What is meant by sustainable fishing?

Select one of the following:

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.

Explanation

Question 19 of 19

1

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

Drag an answer into the correct orange point.

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

	Created by Leah Firmstone about 8 years ago

GCSE Biology (B7 - Further Biology) Quiz on B7 Quiz - Ecosystems, created by Leah Firmstone on 18/06/2016.

B7 Quiz - Ecosystems

Question 1 of 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.

Drag and drop to complete the text.

Explanation

Question 2 of 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.

Drag and drop to complete the text.

Explanation

Question 3 of 19

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

Select one or more of the following:

Explanation

Question 4 of 19

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

Select one of the following:

Explanation

Question 5 of 19

How does eating plant matter impact on a natural ecosystem?

Select one of the following:

Explanation

Question 6 of 19

Select one of the following:

Explanation

Question 7 of 19

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

Select one or more of the following:

Explanation

Question 8 of 19

Fill the blank space to complete the text.

is the process of land turning into deserts.

Explanation

Question 9 of 19

A desert is a place with...

Select one or more of the following:

Explanation

Question 10 of 19

Drag and drop to complete the text.

Explanation

Question 11 of 19

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

Select one of the following:

Explanation

Question 12 of 19

Define 'ecological services'

Select one of the following:

Explanation

Question 13 of 19

Which of the following are NOT examples of ecological services?

Select one or more of the following:

Explanation

Question 14 of 19

Put the steps of the eutrophication process in order.

Drag an answer into the correct orange point.

Explanation

Question 15 of 19

Fill the blank spaces to complete the text.

Explanation

Question 16 of 19

The size of fish stocks depends on...

Select one or more of the following:

Explanation

Question 17 of 19

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

Select one of the following:

Explanation

Question 18 of 19

What is meant by sustainable fishing?

Select one of the following:

Explanation

Question 19 of 19

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

Drag an answer into the correct orange point.

Explanation

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.