MEDIUM
12th CBSE
IMPORTANT
Earn 100

Construct an ideal pyramid of energy when 1,000,000 joules of sunlight are available. Label all its trophic levels.

Important Questions on Ecosystem

MEDIUM
12th CBSE
IMPORTANT
TRUEMAN'S ELEMENTARY Biology VOL. II For XII Class of 10+2>Chapter 14 - Ecosystem>TEST QUESTIONS>Q 3
Why are herbivores considered similar to predators in the ecological context?
MEDIUM
12th CBSE
IMPORTANT
TRUEMAN'S ELEMENTARY Biology VOL. II For XII Class of 10+2>Chapter 14 - Ecosystem>TEST QUESTIONS>Q 7
Why is earthworm considered a farmer's friend? Explain humification and mineralisation occurring in a decomposition cycle.
EASY
12th CBSE
IMPORTANT
TRUEMAN'S ELEMENTARY Biology VOL. II For XII Class of 10+2>Chapter 14 - Ecosystem>TEST QUESTIONS>Q 9
Construct a pyramid of number by taking suitable examples for each trophic level in an ecosystem.
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 4
 Explain the significance of ecological pyramids with the help of an example.
MEDIUM
12th CBSE
IMPORTANT
TRUEMAN'S ELEMENTARY Biology VOL. II For XII Class of 10+2>Chapter 14 - Ecosystem>TEST QUESTIONS>Q 4
Why are the pyramids referred to as ‘upright’ or ‘inverted’? Explain. 
MEDIUM
12th CBSE
IMPORTANT
TRUEMAN'S ELEMENTARY Biology VOL. II For XII Class of 10+2>Chapter 14 - Ecosystem>TEST QUESTIONS>Q 3
Healthy ecosystems are the base of a wide range of ecosystem services. Justify.