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12th West Bengal Board
IMPORTANT
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In a population, If natality is balanced by mortality then there will be

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Important Questions on Ecology Environment & Population

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12th West Bengal Board
IMPORTANT
A TEXT BOOK OF BIOLOGY CLASS 12>Chapter 13 - Ecology Environment & Population>EXERCISE>Q 1
The branch of science which reveals the interrelationship between vegetative and organic environment is called_____.
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12th West Bengal Board
IMPORTANT
A TEXT BOOK OF BIOLOGY CLASS 12>Chapter 13 - Ecology Environment & Population>EXERCISE>Q 2
_____is concerned with the study of the individual organism of an individual species in relation to the environment.
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12th West Bengal Board
IMPORTANT
A TEXT BOOK OF BIOLOGY CLASS 12>Chapter 13 - Ecology Environment & Population>EXERCISE>Q 3
_____ denotes the sum total of physical and biological factors that directly influences the survival, growth, development and reproduction of living organism.
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12th West Bengal Board
IMPORTANT
A TEXT BOOK OF BIOLOGY CLASS 12>Chapter 13 - Ecology Environment & Population>EXERCISE>Q 4
The solid part of the earth's crust forms the_____
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12th West Bengal Board
IMPORTANT
A TEXT BOOK OF BIOLOGY CLASS 12>Chapter 13 - Ecology Environment & Population>EXERCISE>Q 5
The whole mass of air surrounding the earth is called_____.
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12th West Bengal Board
IMPORTANT
A TEXT BOOK OF BIOLOGY CLASS 12>Chapter 13 - Ecology Environment & Population>EXERCISE>Q 6
The water content of the earth is_____.
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12th West Bengal Board
IMPORTANT
A TEXT BOOK OF BIOLOGY CLASS 12>Chapter 13 - Ecology Environment & Population>EXERCISE>Q 7
In the parts of earth, the different strata of air, soil and water, where living organisms survive or live together with the abiotic component is called the_____.
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12th West Bengal Board
IMPORTANT
A TEXT BOOK OF BIOLOGY CLASS 12>Chapter 13 - Ecology Environment & Population>EXERCISE>Q 8
The total number of organisms in a particular area is called_____.