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Karnataka Board PUCPUC Science 2nd PUC Class 12

Common detritivores in our ecosystem are ______.

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Question

Common detritivores in our ecosystem are ______.

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Solution

Common detritivores in our ecosystem are earthworms, bacteria and fungi of decay.

Explanation:

Detritivores, such as earthworms, play an important role in breaking down organic materials and recycling nutrients into the soil. This process is critical for maintaining healthy, fertile soil and sustaining plant growth and the ecosystem.

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Chapter 12: Ecosystem - EXERCISES [Page 215]

APPEARS IN

NCERT Biology [English] Class 12
Chapter 12 Ecosystem
EXERCISES | Q 1. (d) | Page 215
Nootan Biology [English] Class 12 ISC
Chapter 14 Ecosystem
Test Your Progress | Q 2. 20. | Page 655
Nootan Biology [English] Class 12 ISC
Chapter 14 Ecosystem
NCERT EXERCISES WITH ANSWERS | Q 1. (d) | Page 659

RELATED QUESTIONS

The major reservoir of carbon on earth is ______.


Distinguish between production and decomposition.


Define decomposition.


What is leaching?


Name the type of detritus that decomposes faster. List any two factors that enhance the rate of decomposition.


Write the different steps taken in humification and mineralisation during the process of decomposition.


Find out the INCORRECT statement


Decomposition is slow detritus is rich in ______.


The process of mineralisation by micro organisms helps in the release of ______.


What is common to earthworm, mushroom, soil mites and dung beetle in an ecosystem?


What could be the reason for the faster rate of decomposition in the tropics?


How do you distinguish between humification and mineralisation?


The rate of decomposition of detritus is affected by the abiotic factors like availability of oxygen, pH of the soil substratum, temperature etc. Discuss.


A farmer harvests his crop and expresses his harvest in three different ways.

  1. I have harvested 10 quintals of wheat.
  2. I have harvested 10 quintals of wheat today in one acre of land.
  3. I have harvested 10 quintals of wheat in one acre of land, 6 months after sowing.

Do the above statements mean one and the same thing. If your answer is yes, give reasons. And if your answer is ‘no’ explain the meaning of each expression.


Assertion (A): Decomposition process is slower if detritus is rich in lignin and cutin.

Reason (R): Decomposition is largely an oxygen requiring process.


Observe the contents 1, 2, 3 and 4 of soil samples A, B and C shown in the graph. If the temperature and soil moisture of all soil samples are identical, which soil sample (s) will show faster decomposition?

1 indicates lignin content, 2 indicates chitin, 3 indicates nitrogen content, and 4 indicates sugar content


Identify the correct statements:

  1. Detrivores perform fragmentation.
  2. The humus is further degraded by some microbes during mineralization.
  3. Water soluble inorganic nutrients go down into the soil and get precipitated by a process called leaching.
  4. The detritus food chain begins with living organisms.
  5. Earthworms break down detritus into smaller particles by a process called catabolism.

Choose the correct answer from the option given below:


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