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12th Tamil Nadu Board
IMPORTANT
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Solar energy used by green plants for photosynthesis is only

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Important Questions on Ecosystem

EASY
12th Tamil Nadu Board
IMPORTANT
Biology Botany Standard 12>Chapter 7 - Ecosystem>Evaluation>Q 10
Significance of food web is/are
EASY
12th Tamil Nadu Board
IMPORTANT
Biology Botany Standard 12>Chapter 7 - Ecosystem>Evaluation>Q 11

 The following diagram represents

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EASY
12th Tamil Nadu Board
IMPORTANT
Biology Botany Standard 12>Chapter 7 - Ecosystem>Evaluation>Q 14

Which of the following are not regulating services of ecosystem services

i) Genetic resources
ii) Recreation and aesthetic values
iii) Invasion resistance
iv) Climatic regulation

MEDIUM
12th Tamil Nadu Board
IMPORTANT
Biology Botany Standard 12>Chapter 7 - Ecosystem>Evaluation>Q 16
Discuss the gross primary productivity is more efficient than net primary productivity.
MEDIUM
12th Tamil Nadu Board
IMPORTANT
Biology Botany Standard 12>Chapter 7 - Ecosystem>Evaluation>Q 17
Pyramid of energy is always upright. Give reasons.
MEDIUM
12th Tamil Nadu Board
IMPORTANT
Biology Botany Standard 12>Chapter 7 - Ecosystem>Evaluation>Q 18
What will happen if all producers are removed from ecosystem?
EASY
12th Tamil Nadu Board
IMPORTANT
Biology Botany Standard 12>Chapter 7 - Ecosystem>Evaluation>Q 19
Construct the food chain with the following data.Hawk, plants, frog, snake, grasshopper.
MEDIUM
12th Tamil Nadu Board
IMPORTANT
Biology Botany Standard 12>Chapter 7 - Ecosystem>Evaluation>Q 20
Name of the food chain which is generally present in all type of ecosystem. Explain and write their significance.