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The detritus food chain begins with:...

The detritus food chain begins with:

A

Primary producers

B

Primary consumers

C

Secondary consumers

D

Dead organic matter

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The correct Answer is:
D
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A food chain begins with:

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Assertion: Detritus food chain begins with decomposers. Reason: Detrivores, like fungi and bacteria, are major decomposers in such food chains.

Detritus food chain begins from

Food chain is

Food chain is

Detritus food chain end up on

How many of the following statements is /are correct about food chains ? (1 ) GFC is the major conduit of energy flow in an aquatic ecosystem. (2) Source of energy in the detritus food chain is not directly the sun (3) Detritus food chain may be connected to grazing food chain somewhere . (4) In a grazing food chain, the size of organisms always decreases at higher levels.

(a) What is a trophic level in an ecosystem ? What is 'standing crop' with reference to it? (b) Explain the role of the 'first trophic level' in an ecosystem. (c) How is the detritus food chain connected with the grazing food chain in a natural ecosystem ?

Assertion: In Terrestrial, ecosystem much larger fraction of energy flows through the detritus food chain Reason: In an aquatic ecosystem. GFC is the major condult for energy flow.

MODERN PUBLICATION-ECOSYSTEM -COMPETITION FILE (OBJECTIVE TYPE QUESTIONS)(A. MULTIPLE CHOICE QUESTIONS)
  1. Which one of the following is not a functional unit of an ecosystem

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  2. The upright pyramid of number is absent in:

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  3. The detritus food chain begins with:

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  4. Dentrification is carried out by

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  5. Lichen is an association between

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  6. Which one of the following has the largest population in a food chain ...

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  7. The important steps in the process of decomposition are

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  8. In an ecosystem , at a particular time, standing crop includues

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  9. In a pyramid of biomass, if the total dry weight (kg//m^(2)) of primar...

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  10. Leghaemoglobin is produced in response to

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  11. Which of the following relations is correct regarding GPP and NPP of a...

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  12. Ecosystems having the highest primary productivity in

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  13. In a particular climatic condition, decomposition rate is slower if:

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  14. An inverted pyramid of number and an inverted pyramid of biomass are r...

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  15. Which of the following is a pioneer in xerarch succession ?

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  16. The biomass available for consumption to heterotrophs and the rate for...

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  17. Which one of the following is a primary consumer?

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  18. Which of the following is primary producer ?

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  19. Which of the following is a tertiary consumer ?

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  20. Natural reservoir of phosphorus is

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