A habitat of long severe winters and growing season limited to a few months of summer constitutes
Taiga ecosystem
Tundra ecosystem
Savannah ecosystem
Tropical rainforest
- Plankton, Nekton and Itenthon are not the components of one of the following ecosystems:
- Which of the following functions performed by forests help most in controlling drought
- Biologists celebrate 5th June as
- A pollutant is any substance, chemical or other factor that changes
- Humus is an example of
- The biggest herbarium of India is
- An American plant which had become a troublesome weed in India is
- The first stage of plant succession on earth is called
- Pedology is the study of
- One of these is a renewable source of energy:
- First link in any food chain is green plant because
- Hydrilla is a
- Desert plants are generally
- In grassland ecosystem the pyramid of energy is
- Deforestation may reduce the chances of
- Competition for food, light and space is most severe in
- In cities like Mumbai and Delhi, the major air pollutants are
- The source of energy in the ecosystem is:
- Mark which is true
- Which one of the following is associated with the conservation of forest ?
- The best indicator of SO^2 pollution is
- Tropical evergreen forests are seen in
- Commensalism is
- Autumn colouration of leaves appears only in
- Soil particles arranged in order of increasing size are
- What is the major constituent of biomass of an organism
- Which of the following is normally not at atmospheric pollutant
- . Biome is
- The nitrifying bacteria which oxidise nitrite to nitrates include
- What will happen if our water resources are continued to be polluted by industrial wastes