Vegetation in Delhi is predominantly
halophytic
mesophytic
xerophytic
hydrophytic
- Radiation is a health hazard as it causes
- An area of soil is thoroughly wetted and allowed to drain until capillary movement of water is stopped.…
- The least porous soil among the following is
- Laterization is a process which results in the
- An American plant which had become a troublesome weed in India is
- Correct definition of ecosystem is :
- Plankton, Nekton and Itenthon are not the components of one of the following ecosystems:
- Biosphere is:
- In grassland ecosystem the pyramid of energy is
- The nitrifying bacteria which oxidise nitrite to nitrates include
- The best indicator of SO^2 pollution is
- . Biome is
- A pollutant is any substance, chemical or other factor that changes
- Smog is a common pollutant in places having
- Soil particles arranged in order of increasing size are
- Which is the correct food chain
- Primary treatment of sewage means
- Hydrilla is a
- Which one of the following is associated with the conservation of forest ?
- Humus is an example of
- A habitat of long severe winters and growing season limited to a few months of summer constitutes
- When young plants are grazed too heavily they get killed because
- Pedology is the study of
- Commensalism is
- Hie sequence blue green algae > crustose lichens » foliose lichens > mosses » shrubs » dicotyledonous…
- Desert plants are generally
- In cities like Mumbai and Delhi, the major air pollutants are
- Increasing accumulation of DDT in organisms of a food chain in higher trophic levels is known as
- Silent valley is situated in
- What will happen if our water resources are continued to be polluted by industrial wastes