Adaptions To Toxic Compounds

Question 0

Compounds can be accumulated and isolated in areas of the plant such as the

Answer 0

Vascular support tissue. The compounds are locked out of the way and not affecting healthy cells and tissues.

Question 1

Plants can develop a localised aerobic zone around the root system, indicated by red/orange patches of oxidised soil.

Answer 1

Reduced compounds in the wetland may be built up in these areas.
Potential toxic compounds may be taken up by the plant and dealt with in a number of ways.

Question 2

Some plants can biochemically convert dissolved forms of

Answer 2

Toxic compounds into gaseous forms, which are then diffused from the plant.

Question 3

Many wetland plants and animals are simply more

Answer 3

Tolerant to higher levels of toxic compounds than their non-wetland counterparts.

Question 4

A saline wetland can potentially be like a desert. Prevention of water loss from plants in saline environments: (5)

Answer 4

Pumping of salt from cells.
Resistant barrier cells to prevent diffusion of salt into other cells.
Ejecting salt through roots and leaves.
More tolerant to high salt levels.
Adopting the C4 method, carbon dioxide is fixed more effectively than if using the C3 method.