Choose the right sequence of hydrarch succession from the following:

phytoplankton - submerged plant stage - submerged free floating stage - reed swamp stage - marsh meadow stage - scrub stage - forest

phytoplankton - reed swamp stage submerged plant stage - marsh meadow stage - submerged free floating stage - scrub stage - forest

phytoplankton - submerged free floating stage - reed swamp stage - submerged plant stage-marsh meadow stage - scrub stage - forest

phytoplankton - reed swamp stagesubmerged plant stage - submerged free floating stage- marsh meadow stage -scrub stage - forest

Identify the correct statement from the following.

Decomposition events such as fragmentation, leaching, catabolism, humification and mineralisation all occur simultaneously

In terrestrial ecosystem Grazing food chain is the major one

In aquatic ecosystem Detritus food chain is the major one

Annual net primary productivity from sea is around 55 Million tons

In an ecosystem, the population of:

Primary producers are larger than primary consumers

Secondary consumers are largest

Primary consumers out numbers primary producers

Primary consumers are least dependent upon primary producers

Assertion ( A ): A primary succession is more common than secondary succession. Reason ( R ): Biogeochemical cycling is absent in secondary succession.

Both A and R are correct and R is the correct explanation for A

Both A and R are correct and R is not correct explanation for A

E M B I B E

Biology Crash Course NEET>Chapter 36 - Ecosystem>Level 1>Q 72

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Earn 100

An inverted pyramid of A may occasionally be observed in B communities.

73.33% studentsanswered this correctly

Important Questions on Ecosystem

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Biology Crash Course NEET>Chapter 36 - Ecosystem>Level 1>Q 73

According to Robert Costanza and his colleagues, out of the total cost of various ecosystem services, soil formation accounts for

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Biology Crash Course NEET>Chapter 36 - Ecosystem>Level 1>Q 74

Given figure represents a pyramid of biomass in an aquatic ecosystem.
Question Image

Identify A and B and select the correct answer.
(i) A is the crop that supports and B is the crop that is supported.
(ii) A is the crop that is supported and B is the crop that supports.
(iii) A is phytoplanktons and B is zooplanktons.
(iv) A is zooplanktons and B is phytoplanktons.

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Biology Crash Course NEET>Chapter 36 - Ecosystem>Level 1>Q 75

In a food chain herbivores form the

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Biology Crash Course NEET>Chapter 36 - Ecosystem>Level 1>Q 76

When some food chains are interconnected with each other, then they are called

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