An American plant which had become a troublesome weed in India is
Typha latifolia
Cyperus rotundus
Parthenium
Eichhornia
- An area of soil is thoroughly wetted and allowed to drain until capillary movement of water is stopped.…
- Competition for food, light and space is most severe in
- What is the major constituent of biomass of an organism
- In cities like Mumbai and Delhi, the major air pollutants are
- Laterization is a process which results in the
- Which of the following functions performed by forests help most in controlling drought
- First link in any food chain is green plant because
- Deforestation may reduce the chances of
- . Biome is
- One of these is a renewable source of energy:
- Hie earliest settlers on barren lands are generally
- Plankton, Nekton and Itenthon are not the components of one of the following ecosystems:
- A habitat of long severe winters and growing season limited to a few months of summer constitutes
- Pedology is the study of
- Biologists celebrate 5th June as
- Mark which is true
- Correct definition of ecosystem is :
- The biggest herbarium of India is
- Biosphere is:
- Autumn colouration of leaves appears only in
- Radiation is a health hazard as it causes
- The nitrifying bacteria which oxidise nitrite to nitrates include
- The first stage of plant succession on earth is called
- Tropical evergreen forests are seen in
- The source of energy in the ecosystem is:
- The best indicator of SO^2 pollution is
- An American plant which had become a troublesome weed in India is
- What will happen if our water resources are continued to be polluted by industrial wastes
- Water plants usually have
- Hydrilla is a