Ecosystem - Botany - Biology Previous Year Questions

Phosphorus cycle does not pass through __________ .

All of the raw materials that are extracted from an ecosystem are called ________ services.

The pyramid of biomass is inverted in________ ecosystem.

Which of the following characteristics are seen in a stable community?

i. It is strong enough to withstand environmental disturbance and recovers quickly.

ii. It is resistant to invasive species.

iii. It exhibits constant change in biomass production over a period of time.

iv. It has more species diversity.

Primary productivity in an ecosystem refers to the rate of generation of _________ .

Given below are two statements.

Statement I - An ecosystem is a self regulatory and self sustaining structural and functional unit of nature.

Statement II - Entire biosphere can be considered as one global ecosystem.

In light of above statements, choose the most appropriate answer from the options given below.

Which of the following are the initial and final steps during the process of ecological succession?

Which of the following is INCORRECT about Primary and Secondary ecological successions?

Given below are two statements.

Statement I - Biome constitute, a large regional terrestrial unit delimited by a specific climate zone having major vegetation zone and associated fauna.

Statement II - Biome is the fourth level of ecological hierarchy.

In light of above statements, select the correct answer from the option given below.

Which one of the ecosystem service is necessary for crop production and fruit formation?

Following components of the ecosystem are all linked to function as an 'ecosystem unit' EXCEPT ________

The terminal stage of xerarch succession is represented by _________ .

Detritus food chain begins with ___________ .

Given below are two statements.

Statement I - The long term storage places like sediments and oceanic water are termed as 'sinks'.

Statement II - Human activities like fossil fuel burning and deforestation have affected the global carbon cycle.

In the light of above statements, select the correct option given below:

Following changes occur during the successive seral stages of ecological succession EXCEPT _______

Following are the limitations of ecological pyramids EXCEPT __________ .

The amount of ________ determines the pattern of ecological succession in the given area.