Which one of the following groups is likely to have higher assimilation efficien

Question

Which one of the following groups is likely to have higher assimilation efficiencies?

Question 1 options:

A)

B)

C)

D)

Herbivores in desert ecosystems.

Question 2

Which of the following groups represent the major component of living biomass in soils?

Question 2 options:

Fungi

Bacteria

Earthworms

Nematods

Question 3 (4 points)

Detritus based foodwebs, rather than consumer based foodwebs, dominate the energetics of most ecosystems.

Question 3 options:

True

False

Question 4 (4 points)

The largest pool of gloabal carbon is found within...

Question 4 options:

Terrestrial soil

Ocean waters

Atmosphere

Deep ocean sediments

Living biomass

Question 5 (4 points)

Term used to refer to activity that can be continued or repeated for the foreseeable future.

Question 5 options:

Storage

Sustainability

Harvest

Biomass production

Question 6 (4 points)

Which of the following is NOT true about ozone (O3)

Question 6 options:

Is an important component of the upper atmosphere by asorbing much of harmful UV rays.

Is harmful component of lower atmosphere by causing respiratory problems associeated with smog.

Is readily broken down in upper atmopshere by methane (CH4), chlorofluorocarbons (CFCs) and nitrous oxides (Nx0).

Is a major contributor to 'global warming'.

Question 7 (4 points)

The current rates of species extinction is estimated to be about _____, while natural rates range from 1 species exticnt per 10-1000 yrs.

Question 7 options:

10 species per day

10 species per year

10 species per decade

10 species per century

Question 8 (4 points)

Organisms that utilize carbon dioxide (CO2) as a carbon souce and light as an energy souce.

Question 8 options:

Chemoautotrophs (chemosynthetic)

Photoautotrophs (photosynthetic)

Heterotrophs (consumers)

Keystone species

Question 9 (4 points)

Organisms that utilize pre-existing organic matter as a carbon source and an energy souce.

Question 9 options:

Chemoautotrophs

Photoautotrophs

Heterotrophs (consumers)

Keystone

Question 10 (4 points)

Which of these graphs represents a typical species-area curve?

Question 10 options:

A

B

C

None of the above

A)

Herbivores in forest ecosystems.

B)

Herbivores in grassland ecosystems.

C)

Herbivores feeding on algae in aquatic ecosystems.

D)

Herbivores in desert ecosystems.

Explanation / Answer

1: Herbivores in desert ecosystems, is likely to have higher assimilation efficiencies. Hence, option d is correct.

2. Bacteria represent the major component of living biomass in soils. Hence, option b is correct.

3. Detritus based foodwebs, rather than consumer based foodwebs, dominate the energetics of most ecosystems.This is true statement.

4. The largest pool of global carbon is found within ocean water. Hence, option b is correct.

5. Term used to refer to activity that can be continued or repeated for the foreseeable future is Sustainability. Hence, option b is correct.

6. Ozone is present in the upper atmosphere and not lower atmosphere. Hence, b is incorrect.

7. The current rates of species extinction is estimated to be about 10 species per century. Hence, option d is correct.

8. Organisms that utilize carbon dioxide (CO2) as a carbon souce and light as an energy source are autotrophs. Hence, option is b.

9. Organisms that utilize pre-existing organic matter as a carbon source and an energy source are chemosutotrophs. Hence, option b is correct.

10. C represent species area relationship. Hence, option c is correct.

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