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- 1. Multiple Choice
The study of interactions between living organisms and environment is called
ecosystem
phytogeography
ecology
phytosociology
- 2. Multiple Choice
The major source of water for the soil is
groundwater
capillary water
precipitation
combined water
- 3. Multiple Choice
The science dealing with soil is called
pedology
aerology
geology
palaeontology
- 4. Multiple Choice
The soil which cracks and shrinks most as it dries is
chalky soil
clay soil
sandy soil
soil rich in minerals
- 5. Multiple Choice
Plants absorb from the soil
hygroscopic water
capillary water
gravitational water
both hygroscopic and gravitational water
- 6. Multiple Choice
Which one of the following factors is biotic?
photoperiod
CO2 content of the soil
texture and porosity of soil
rainfall
- 7. Multiple Choice
Solubility and availability of plant nutrients related to
soil pH
soil porosity
soil temperature
soil colour
- 8. Multiple Choice
Which is the characteristic feature of a physiological dry soil?
there is plenty of water in the soil
light available to the plant is not sufficient
soil is stony
concentration of salt is very high in soil water
- 9. Multiple Choice
The grazing animals can change the type of vegetation by
bringing in plant pathogens
selective grazing
cross pollination
bringing the seeds for other plants
- 10. Multiple Choice
The term biosphere is used for the zone of earth where life exists
on the lithosphere surface
in the hydrosphere
in the lithosphere and hydrosphere
in the lithosphere hydrosphere and atmosphere
- 11. Multiple Choice
In India coniferous forests are found in
Madhya Pradesh
Himalayan region
Satpura Hills
Rajasthan
- 12. Multiple Choice
Xerophytes have long roots
to give mechanical support
due to light
to draw water from deep water beds
none of the above
- 13. Multiple Choice
Soil salinity is measured by
porometer
photometer
conductivity meter
calorimeter
- 14. Multiple Choice
The factor governing the structure of earth surface is
topographic
edaphic
biotic
temperature
- 15. Multiple Choice
What is the main causative factor of desertification?
developmental activities
tourism
overgrazing
irrigated agriculture
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