The term ecosystem was coined by
(1) AG Tansley
(2) E Haeckel
(3) E Warming
(4) EP Odum
Vertical distribution of different species occupying different levels in a biotic community is
known as
1. divergence
2. stratification
3. zonation
4. pyramid
Which one of the following is not a functional unit of an ecosystem?
1. Energy flow
2. Decomposition
3. Productivity
4. Stratification
Which one of the following is one of the characteristics of a biological community ?
1. Stratification
2. Natality
3. Mortality
4. Sex-ratio
Which of the following is the functional unit of nature?
1. A plant
2. An animal
3. Ecosystem
4. Environment
Which vertical strata is occupied by trees in a forest?
1. Top
2. Middle
3. Bottom
4. Any of the above.
| 1. | A.G. Tansley | 2. | E. Haeckel |
| 3. | E. warming | 4. | E.P. Odum |