Ecosystem Test

Result

Ecosystem Test - 2

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Weekly Quiz Competition

Question 1
4 / -1

Which one of the following is not a correct match of the term and its description?

A
Ecosystem - Functional unit of nature

B
Global ecosystem - Entire biosphere

C
Aquatic ecosystem - Wetland

D
Natural ecosystem - Crop field

Solution

Ecological equivalents are the organisms which occupy same niche in different habitats (or geographical areas) e.g. both owl and cat feed on shrews and mice hence they occupy the same niche though their habitats are different.
Question 2
4 / -1

The given pie diagram represents different components of the soil. Identify P, Q and R and select the correct option.

A
a

B
b

C
c

D
d

Solution

Soil has five components with different compositions: Mineral matter - 40%, water - 25%, organic matter - 10%, air-25% and soil organisms (variable).
Question 3
4 / -1

Which one of the following is the most productive ecosystem?

A
Temperate Forest

B
Grassland

C
Desert

D
Tropical Rain Forest

Solution

Tropical rainforest shows the maximum diversity and also the maximum productivity. More solar energy and resources are available in tropics which promotes higher productivity. On land the maximum primary production rate is found in tropical rainforests followed by tropical deciduous forests, temperate forests, savannah, temperate grasslands and desert scrub.
Question 4
4 / -1

Calcifuges are the plants growing in

A
Low calcium

B
High calcium

C
Moderate calcium

D
None of these

Solution

A calcifuge is a plant that does not tolerate alkaline soil. They are adapted to grow in soils with low lime.
Question 5
4 / -1

Which one of the following aspects is not a component of functional unit of ecosystem?

A
Productivity

B
Decompositon

C
Energy flow

D
Ecological pyramids

Solution

Interaction of biotic and abiotic components result in a physical structure, that is characteristic of each type of ecosystem. Components of ecosystem function as one single unit. Four important functional aspects of the ecosystem are:
(i) Productivity,
(ii) Decomposition,
(iii) Energy flow and
(iv) Nutrient cycling.
Ecological pyramids are graphical representation of number, biomass and energy flow in an ecosystem.