IB ESS SL 2.5 Zonation Succession and Change Topic Practice

Question 1

[Maximum number: 1]
Salinity variation in the Large Ocean Management Area

Figure:Salinity variation in the Large Ocean Management Area

Water-surface temperature variation across the LOMA

Figure:Water-surface temperature variation across the LOMA

temperature scale

Figure:temperature scale

Suggest one reason for the zonation seen in Figure: Water-surface temperature variation across the LOMA.

Question 2

[Maximum number: 3]
Beaver-dam succession sequence — panel A

Figure:Beaver-dam succession sequence — panel A

Beaver-dam succession sequence — panel B

Figure:Beaver-dam succession sequence — panel B

Beaver-dam succession sequence — panel C

Figure:Beaver-dam succession sequence — panel C

Beaver-dam succession sequence — panel D

Figure:Beaver-dam succession sequence — panel D

Suggest how an ecologist might measure the changes in one abiotic factor along a transect from a beaver marsh, through beaver meadow to the adjoining forest.

Question 3

[Maximum number: 7]
Stages of ecological succession after fire

Figure:Stages of ecological succession after fire

Question (a)

(a)

Outline two reasons why the climax community in the succession model shown above is more stable than the intermediate community.

[ 2 ]

Question (b)

(b)

Distinguish between zonation and succession.

[ 1 ]

Question (c)

(c)

Outline two ways in which the food web is likely to change as a result of succession.

[ 2 ]

Question (d)

(d)

Outline two ways in which the soil quality in the pioneer stages of the succession model shown above will differ from that in the climax ecosystem.

[ 2 ]
All question bank results loaded