List of top Environmental Studies Questions on Population and Conservation Ecology

Which of the following statements are correct?
Species that invade a bare area are called: Pioneer species.
In primary succession on rocks, the pioneers are usually lichens.
In primary succession in water, the pioneers are reed swamps. In secondary succession,
species that invade depend on soil, water, and environment.
Choose the correct answer from the options given below:
The plants and animals that cannot maintain a constant internal environment are called:
Match List-I with List-II:
List-I (Concept)List-II (Proposed by)
(A) Ecology(II) Norman Myers
(B) Ecosystem(IV) Ernst Haeckel
(C) Human population growth(I) Sir Arthur Tansley
(D) Hot spots(III) T R Malthus
Choose the correct answer from the options given below:
The diversity of organisms that share the same community/habitat is called as _____________.
Arrange the following from lowest to highest dry weight in a biomass pyramid of a grassland ecosystem:
(A) Primary Producer
(B) Primary Consumer
(C) Secondary Consumer
(D) Tertiary Consumer
Choose the correct answer from the options given below:
Arrange the following stages of primary succession of plants from last stage to first stage:
(A) Reed-swamp stage,
(B) Submerged plant stage,
(C) Marsh Meadow stage,
(D) Phytoplankton
Choose the correct answer from the options given below:

Read the following passage and answer the next five questions:

Species interaction and productivity are two important components of any given ecosystem. In an ecosystem, interspecific interactions arise from the interaction of populations of two different species. Such interactions could be beneficial to both species, harmfulto both species, beneficial to one and harmful to the other, or vice-versa. There are also cases where only one species is harmed or benefitted, while the other remains unaffected. On the other hand, the productivity of an ecosystem starts with photosynthesis by green plants and is measured as the amount of biomass produced over a period of time. Such biomass becomes available for consumption to heterotrophs.