Ecosystem · Biology · NEET

Given below are two statements:

Statement I: The primary source of energy in an ecosystem is solar energy.

Statement II : The rate of production of organic matter during photosynthesis in an ecosystem is called net primary productivity (NPP).

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

Who is known as the father of Ecology in India?

Given below are two statements:

Statement I: In ecosystem, there is unidirectional flow of energy of sun from producers to consumers.

Statement II: Ecosystems are exempted from 2nd law of thermodynamics.

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

Which of the following is the unit of productivity of an Ecosystem?

Consider the pyramid of energy of an ecosystem given below:

If T$$_4$$ is equivalent to $$1000 \mathrm{~J}$$, what is the value at $$\mathrm{T}_1$$ ?

Which one of the following is not a limitation of ecological pyramids?

In an ecosystem if the Net Primary Productivity (NPP) of first trophic level is $$100 x\left(\mathrm{kcal} \mathrm{~m}^{-2}\right) \mathrm{yr}^{-1}$$, what would be the GPP (Gross Primary Productivity) of the third trophic level of the same ecosystem?

Match List - I with List - II

Choose the correct answer from the options given below :

The amount of nutrients such as carbon, nitrogen, potassium and calcium present in the soil at any given time is referred to as :

The species of plants that plays a vital role in controlling the relative abundance of other species in a community is called _________.

Identify the correct statements :

A. Detrivores perform fragmentation.

B. The humus is further degraded by some microbes during mineralization.

C. Water soluble inorganic nutrients go down into the soil and get precipitated by a process called leaching.

D. The detritus food chain begins with living organisms.

E. Earthworms break down detritus into smaller particles by a process called catabolism.

Choose the correct answer from the options given below :

In the equation GPP $$-$$ R = NPP

GPP is Gross Primary Productivity

NPP is Net Primary Productivity

R here is __________.

Which one of the following statements is NOT correct?

Match List I with List II:

Choose the correct answer from the options given below:

All successions irrespective of the habitat proceed to which type of climax community?

The pioneer species in a hydrarch succession are

The species that come to appear in bare area are called

The amount of biomass or organic matter produced per unit area over a time period by plants during photosynthesis is called

Two butterfly species are competing for the same nectar of a flower in a garden. To survive and coexist together, they may avoid competition in the same garden by :

Given below are two statements:

Statement I : Decomposition is a process in which the detritus is degraded into simpler substances by microbes.

Statement II : Decomposition is faster if the detritus is rich in lignin and chitin.

In the light of the above statements, choose the correct answer from the options given below :

Which one of the following will accelerate phosphorus cycle?

Detritivores breakdown detritus into smaller particles. This process is called :