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The term ecology was coined by

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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 5
Animals have the innate ability to escape from predation. Below examples are given for the same out of which choose the incorrect example.
 
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12th West Bengal Board
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A TEXT BOOK OF BIOLOGY CLASS 12>Chapter 13 - Ecology Environment & Population>EXERCISE>Q 6
Small fish get struck near the bottom of a shark and derives its nutrition from the shark. What kind of association it 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
Animals undergo inactive stages during winter is known as....
 
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12th West Bengal Board
IMPORTANT
A TEXT BOOK OF BIOLOGY CLASS 12>Chapter 13 - Ecology Environment & Population>EXERCISE>Q 8

Match the following with correct combinations.

Column I  Column II
A. Mutualism 1. Tiger and Deer
B. Commensalism    2. Cuscuta and Cissus
C. Parasitism  3. Sucker fish and Shark
D. Predation 4. Crab and Sea anemone
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12th West Bengal Board
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A TEXT BOOK OF BIOLOGY CLASS 12>Chapter 13 - Ecology Environment & Population>EXERCISE>Q 9

The equation ∆Nn∆N1=β represents which of the following?

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12th West Bengal Board
IMPORTANT
A TEXT BOOK OF BIOLOGY CLASS 12>Chapter 13 - Ecology Environment & Population>EXERCISE>Q 10
An association between two individuals where both are benefited and where neither can survive without the help of the other is 
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12th West Bengal Board
IMPORTANT
A TEXT BOOK OF BIOLOGY CLASS 12>Chapter 13 - Ecology Environment & Population>EXERCISE>Q 11
The least porous soil among the following is
 
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12th West Bengal Board
IMPORTANT
A TEXT BOOK OF BIOLOGY CLASS 12>Chapter 13 - Ecology Environment & Population>EXERCISE>Q 12
Niche is defined as the