Which one of the following pairs is mismatched?

1

(a)

Tundra : permafrost

(b)

Savannah : acacia trees

(c)

Prairie: epiphytes

(d)

Coniferous forest : evergreen trees

Which one of the following is not used for construction of ecological pyramids?

1

(a)

fresh weight 

(b)

dry weight 

(c)

number of individuals

(d)

rate of energy flow

In an ecosystem, the cycling of nutrients is known as

1

(a)

geological cycle

(b)

chemical cycle

(c)

geochemical cycle

(d)

biogeochemical cycle

In ecological succession, the climax community is best recognised by the following state

1

(a)

P = R

(b)

P > R

(c)

P < R

(d)

\(P\neq R\)

Of the total incident solar radiation the proportion of PAR is

1

(a)

about-70%

(b)

about 60%

(c)

less than 50%

(d)

more than 80%

Large woody vines are more commonly found in

1

(a)

temperate forests

(b)

mangrooves

(c)

tropical rainforests

(d)

alpine forests

During the process of ecological succession the changes that take place in communities are:

1

(a)

Orderly and sequential

(b)

Random

(c)

Very quick

(d)

Not influenced by the physical environment.

Climax community is in a state of:

1

(a)

non-equilibrium

(b)

equilibrium

(c)

disorder

(d)

constant change.

Which one of the following is not a functional unit of an ecosystem 

1

(a)

energy flow

(b)

Decomposition

(c)

Productivity

(d)

Stratification

The sequence of communities of primary succession in water is:

1

(a)

phytoplankton, sedges, free-floating hydrophytes, rooted hydrophytes, grasses, and trees.

(b)

phytoplankton, free-floating hydrophytes, rooted hydrophytes, sedges, grasses and tree.

(c)

free-floating hydrophytes, sedges, phytoplankton, rooted hydrophytes, grasses, and trees.

(d)

phytoplankton, rooted submerged hydrophytes, floating hydrophytes, reed swap, sedges, medow and trees.