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.

EASY

12th Tamil Nadu Board

IMPORTANT

Biology Botany Standard 12>Chapter 6 - Principles of Ecology>Evaluation>Q 24

What are ecological equivalents? Give one example .

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 ?

MEDIUM

12th Tamil Nadu Board

IMPORTANT

Biology Botany Standard 12>Chapter 6 - Principles of Ecology>Evaluation>Q 27

‘Green algae are not likely to be found in the deepest strata of the ocean’. Give at least one reason.

MEDIUM

12th Tamil Nadu Board

IMPORTANT

Biology Botany Standard 12>Chapter 6 - Principles of Ecology>Evaluation>Q 28

What is Phytoremediation ?

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 ?

MEDIUM

12th Tamil Nadu Board

IMPORTANT

Biology Botany Standard 12>Chapter 6 - Principles of Ecology>Evaluation>Q 30

The organic horizon is generally absent from agricultural soils because tilling, e.g., plowing, buries organic matter. Why is an organic horizon generally absent in desert soils ?