- Parts of the forest are cut and burnt in rotation
- Seeds are sown in the ashes
- Plots cleared are cultivated for a few years and then left follow
- Single crop is grown on these plots
Author: Zabeehullah
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- Mosses
- Liverworts
- Ferns
- Grasses
- Littoral zone
- Limnetic zone
- Both (a) & (b)
- Profundal zone
- Algae and fungi
- Algae and bryophytes
- Algae and roots of gymnosperms
- Fungi and roots of higher plants
- Dehradun valley
- Kalash valley
- Western ghats
- Sunderbans
- Producers only
- Consumers only
- Decomposers only
- All of the above
- Tropical zone
- Gangetic plains
- Mangrove belt
- Alpine zone
- 3,900-6,000 m
- 1,900-3,000 m
- 1,000-1,5000 m
- 500-1,000 m
- One
- One and half
- More than two
- Two
- Niche
- Ecotype
- Edge line
- Ecotone
- Because there is no transpiration
- Because respiration ceases at such a low temperature
- Because no photosynthesis takes place at such a low temperature
- Because of desiccation and mechanical damage to the tissues
- They are absolutely devoid of xylem
- They totally lack phloem
- They do not have stomata
- The supporting tissues and xylem are feebly developed
- Harmful to the plants growing in the soil
- Useful to plants growing in the soil
- Neither harmful nor useful to plants growing in the soil
- Both harmful as well as useful to plants growing on the soil
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