MEDIUM
12th CBSE
IMPORTANT
Earn 100

Justify the importance of decomposers in an ecosystem.

Important Questions on Ecosystem

EASY
12th CBSE
IMPORTANT
TRUEMAN'S ELEMENTARY Biology VOL. II For XII Class of 10+2>Chapter 14 - Ecosystem>TEST QUESTIONS>Q 8
State any two differences between phosphorus and carbon cycle in nature.
EASY
12th CBSE
IMPORTANT
TRUEMAN'S ELEMENTARY Biology VOL. II For XII Class of 10+2>Chapter 14 - Ecosystem>TEST QUESTIONS>Q 8
Write the importance of phosphorus in living organisms.
MEDIUM
12th CBSE
IMPORTANT
TRUEMAN'S ELEMENTARY Biology VOL. II For XII Class of 10+2>Chapter 14 - Ecosystem>TEST QUESTIONS>Q 9
Explain why a progressive decline is seen in the population size from the first to fourth trophic levels in the pyramid of numbers.
MEDIUM
12th CBSE
IMPORTANT
TRUEMAN'S ELEMENTARY Biology VOL. II For XII Class of 10+2>Chapter 14 - Ecosystem>TEST QUESTIONS>Q 10
“In a food chain, a trophic level represents a functional level, not a species.” Explain.
MEDIUM
12th CBSE
IMPORTANT
TRUEMAN'S ELEMENTARY Biology VOL. II For XII Class of 10+2>Chapter 14 - Ecosystem>TEST QUESTIONS>Q 11
Differentiate between primary and secondary succession. Provide one example of each.
MEDIUM
12th CBSE
IMPORTANT
TRUEMAN'S ELEMENTARY Biology VOL. II For XII Class of 10+2>Chapter 14 - Ecosystem>TEST QUESTIONS>Q 12
Describe the interrelationship between productivity, gross productivity, and net productivity.
MEDIUM
12th CBSE
IMPORTANT
TRUEMAN'S ELEMENTARY Biology VOL. II For XII Class of 10+2>Chapter 14 - Ecosystem>TEST QUESTIONS>Q 1
Describe the process of decomposition of detritus under the following heads. Fragmentation, Leaching, Catabolism, Humification, and Mineralisation.
MEDIUM
12th CBSE
IMPORTANT
TRUEMAN'S ELEMENTARY Biology VOL. II For XII Class of 10+2>Chapter 14 - Ecosystem>TEST QUESTIONS>Q 2


(i) Name the biogeochemical cycle shown above.
(ii) Name an activity of the living organisms not depicted in the cycle by which this nutrient is returned to the atmosphere.