Define ecology.

Important Questions on Principles of Ecology

EASY

12th Tamil Nadu Board

IMPORTANT

Biology Botany Standard 12>Chapter 6 - Principles of Ecology>Evaluation>Q 23

What is ecological hierarchy? Name the levels of ecological hierarchy.

MEDIUM

12th Tamil Nadu Board

IMPORTANT

Biology Botany Standard 12>Chapter 6 - Principles of Ecology>Evaluation>Q 25

Distinguish habitat and niche.

MEDIUM

12th Tamil Nadu Board

IMPORTANT

Biology Botany Standard 12>Chapter 6 - Principles of Ecology>Evaluation>Q 26

Why are some organisms called as eurythermals and some others as stenohaline ?

EASY

12th Tamil Nadu Board

IMPORTANT

Biology Botany Standard 12>Chapter 6 - Principles of Ecology>Evaluation>Q 29

What is Albedo effect and write their effects ?

HARD

12th Tamil Nadu Board

IMPORTANT

Biology Botany Standard 12>Chapter 6 - Principles of Ecology>Evaluation>Q 31

Soil formation can be initiated by biological organisms. Explain how?

MEDIUM

12th Tamil Nadu Board

IMPORTANT

Biology Botany Standard 12>Chapter 6 - Principles of Ecology>Evaluation>Q 33

Describe the mutual relationship between the fig and wasp and comment on the phenomenon that operates in this relationship.

EASY

12th Tamil Nadu Board

IMPORTANT

Biology Botany Standard 12>Chapter 6 - Principles of Ecology>Evaluation>Q 34

Lichen is considered as a good example of obligate mutualism. Explain.

MEDIUM

12th Tamil Nadu Board

IMPORTANT

Biology Botany Standard 12>Chapter 6 - Principles of Ecology>Evaluation>Q 35

What is mutualism? Mention any two example where the organisms involved are commercially exploited in modern agriculture.