Welcome to your environmentquiz3
1.
In the grasslands, trees do not replace the grasses as a part of an ecological succession because of___? [2013]
2.
Which one of the following is the correct sequence of ecosystems in the order of decreasing productivity? [2013]
3.
With reference to the food chains in ecosystems which of the following kinds of organism is/are known as decomposer organism/ organisms?
- Virus
- Fungi
- Bacteria.
Select the correct answer using the codes below. [2013]
4.
Consider the following kinds of organisms: [2012]
- Bat
- Bee
- Bird.
Which of the above is/are pollinating agent/agents?
5.
The Millennium Ecosystem Assessment describes the following major categories of ecosystem services-provisioning, supporting, regulating, preserving and cultural. Which one of the following is a supporting service? [2012]
6.
Consider the following: [2011]
- Photosynthesis.
- Respiration.
- Decay of organic matter.
- Volcanic action.
Which of the above add carbon dioxide to the carbon cycle on earth?
7.
In the context of ecosystem productivity, marine upwelling zones are important as they increase the marine productivity by bringing the?
- Decomposer microorganisms to the surface.
- Nutrients to the surface.
- Bottom-dwelling organisms to the surface.
Which of the statements given above is/are correct? [2011]
8.
If a tropical rain forest is removed, it does not regenerate quickly as compared to a tropical deciduous forest. This is because? [2011]
9.
A pesticide which is a chlorinated hydrocarbon is sprayed on a food crop.
The food chain is: Food crop - Rat - Snake - Hawk.
In this food chain, the highest concentration of the pesticide would accumulate in which one of the following? [2010]
10.
Some species of plants are insectivorous. Why? [2010]
