Decomposition
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BIOXII14: ECOSYSTEM

344467 Decomposers like fungi and bacteria are :-
i. Autotrophs
ii. Heterotrophs
iii. Saprotrophs
iv. Chemo-autotrophs

1 i and iii
2 i and iv
3 ii and iii
4 i and ii
BIOXII14: ECOSYSTEM

344468 Statement A :
Decomposition rate is slower if detritus is rich in lignin and chitin, and quicker, if detritus is rich in nitrogen and watersoluble substances like sugars.
Statement B :
Low temperature and anaerobiosis inhibit decomposition resulting in build up of organic materials.

1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
BIOXII14: ECOSYSTEM

344469 The products of decomposition process are

1 Humus
2 Inorganic nutrients
3 Complex nutrients
4 Both 1 and 2
BIOXII14: ECOSYSTEM

344470 Assertion :
Humus undergoes decomposition at an extremely fast rate.
Reason :
Various microbes can degrade humus effectively.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect.
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BIOXII14: ECOSYSTEM

344467 Decomposers like fungi and bacteria are :-
i. Autotrophs
ii. Heterotrophs
iii. Saprotrophs
iv. Chemo-autotrophs

1 i and iii
2 i and iv
3 ii and iii
4 i and ii
BIOXII14: ECOSYSTEM

344468 Statement A :
Decomposition rate is slower if detritus is rich in lignin and chitin, and quicker, if detritus is rich in nitrogen and watersoluble substances like sugars.
Statement B :
Low temperature and anaerobiosis inhibit decomposition resulting in build up of organic materials.

1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
BIOXII14: ECOSYSTEM

344469 The products of decomposition process are

1 Humus
2 Inorganic nutrients
3 Complex nutrients
4 Both 1 and 2
BIOXII14: ECOSYSTEM

344470 Assertion :
Humus undergoes decomposition at an extremely fast rate.
Reason :
Various microbes can degrade humus effectively.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect.
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BIOXII14: ECOSYSTEM

344467 Decomposers like fungi and bacteria are :-
i. Autotrophs
ii. Heterotrophs
iii. Saprotrophs
iv. Chemo-autotrophs

1 i and iii
2 i and iv
3 ii and iii
4 i and ii
BIOXII14: ECOSYSTEM

344468 Statement A :
Decomposition rate is slower if detritus is rich in lignin and chitin, and quicker, if detritus is rich in nitrogen and watersoluble substances like sugars.
Statement B :
Low temperature and anaerobiosis inhibit decomposition resulting in build up of organic materials.

1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
BIOXII14: ECOSYSTEM

344469 The products of decomposition process are

1 Humus
2 Inorganic nutrients
3 Complex nutrients
4 Both 1 and 2
BIOXII14: ECOSYSTEM

344470 Assertion :
Humus undergoes decomposition at an extremely fast rate.
Reason :
Various microbes can degrade humus effectively.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect.
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BIOXII14: ECOSYSTEM

344467 Decomposers like fungi and bacteria are :-
i. Autotrophs
ii. Heterotrophs
iii. Saprotrophs
iv. Chemo-autotrophs

1 i and iii
2 i and iv
3 ii and iii
4 i and ii
BIOXII14: ECOSYSTEM

344468 Statement A :
Decomposition rate is slower if detritus is rich in lignin and chitin, and quicker, if detritus is rich in nitrogen and watersoluble substances like sugars.
Statement B :
Low temperature and anaerobiosis inhibit decomposition resulting in build up of organic materials.

1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
BIOXII14: ECOSYSTEM

344469 The products of decomposition process are

1 Humus
2 Inorganic nutrients
3 Complex nutrients
4 Both 1 and 2
BIOXII14: ECOSYSTEM

344470 Assertion :
Humus undergoes decomposition at an extremely fast rate.
Reason :
Various microbes can degrade humus effectively.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect.
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