Ecosystem

Which of the following statements are Correct?
(a) Energy flow from producers to consumers is unidirectional
(b) Energy pyramid can never be inverted
(c) Transfer of energy follows the $1 \%$ law
Choose the correct answer from the options g...

Which of the following are primary consumers in a food chain?

Ecological pyramids represent the relationship between the organisms at different trophic levels and they are generally inverted for:

\(\text { Match List I with List II: }\)


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

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 stateme...

Who is known as the father of Ecology in India?

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...

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...

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

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

Match List - I with List - II

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Match List I with List II:

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Which one of the following statements is NOT correct?

In the equation GPP \(-\) R = NPP
GPP is Gross Primary Productivity
NPP is Net Primary Productivity
R here is __________.

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 cal...

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 :

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

The species that come to appear in bare area are called

The pioneer species in a hydrarch succession are

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

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

Which one of the following will accelerate phosphorus cycle?

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 ligh...

In the equation GPP - R = NPPR represents :

Which of the following statements is not correct?

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

In relation to Gross primary productivity and
Net primary productivity of an ecosystem,
which one of the following statements is
correct?

Match the trophic levels with their correct species
examples in grassland ecosystem.
(A) Fourth trophic level   (i) Crow
(B) Second trophic level  (ii) Vulture
(C) First trophic level      (iii) Rabbit
(D) Third trophic level    (iv) Grass
...

Which of the following ecological pyramids is generally inverted?

Which of the following is the most important cause for animals and plants being driven to extinction?

What type of ecological pyramid would be
obtained with the following data?
Secondary consumer : 120 g
Primary consumer : 60 g
Primary producer : 10 g

Which ecosystem has the maximum biomass ?

The primary producers of the deep-sea hydrothermal vent ecosystem are

The term ecosystem was coined by :

Which one of the following is a characteristic feature of cropland ecosystem ?

Which of the following would appear as the pioneer organisms on bare rocks?

The mass of living material at a trophic level at a particular time is called :

Secondary Succession takes place on/in :

In an ecosystem the rate of production of organic matter during photosynthesis is termed as :

Most animals are tree dwellers in a:

Vertical distribution of different species occupying different levels in a biotic community is known as :

In which of the following both pairs have
correct combination?

Most animals that live in deep oceanic
waters are -

During ecological succession :

Match the following and select the correct option:

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Given below is a simplified model of phosphorus cycling in a terrestrial ecosystem with four
blanks (A-D). Identify the blanks.