Forestry

Trees and / or shrubs can substantially improve the productivity of farmlands

They are exposed to strong winds

Both (a) & (b)

None of these

It includes Hub, Parli-Kud, and Dasht river catchments

It comprise the land berween the Makran range and the Arabian sea

Most of the coastal zone is desertic or grass-land much oversued as pasture

All of the above

The arid and semi-arid zones of the world, arid savannas of the tropics, the slopes of the mountains of the tropics

And subtropics and forest areas of the developing world under shifting cultivation have been described as ‘Fragile Ecosystems’

Because their equilibrium appears to be easily upset and because they become ecologically degraded if certain forms of land use

All of the above

Species diversity

Alpha diversity

Beta diversity

Genetic diversity

Abiotic factors

Biotic factors

Both (a) & (b)

None of these

Chenab

Ravi

Sutlij

All of the above

80 km South of Karachi

80 km North of Karachi

80 km West of Karachi

80 km East of Karachi

Nitromonas

Pseudomonas

Nostoc

Rhizobium

Uniform mesophyll

Absence of cuticle

Well developed root-shoot systems

All of these

Saprophytic association between fungus and the roots of seed plants

Parasitic association between fungus and the roots of seed plant

Symbiotic association between fungus and the roots of seed plants

All of the above