Forestry

Nurseries fail quite often as the seed collected is rather old rotten or does not have an embryo

There are several methods to test seed germination percent but the most practical is to, to take a few samples from thoroughly mixed heap

Both (a) & (b)

None of these

SO2

CO

CO2

N2O

For those developing countries not possessing significant oil or mineral wealth upon which to base their economic development

The output from the use of their land resources must, for the foresceable future, form the basis for their economies

Both (a) & (b)

None of these

Carbon

Potassium

Nitrogen

Free energy

Trees are the backbone of almost all landscape planting

The very fact that they take a large number of years to reach maturity

And display the inherent grace, it is essential that these should be selected and placed with great care

All of the above

Commensalism

Protoco-operation

Mutualism

Antibiosis

Net production

Secondary production

Net storage

Net primary production

Reduction of biotic thurst

Destruction of diseased plants

Both (a) & (b)

None of these

Feebly devloped root system

Deep and much branched root system

Well devloped leaves

III devloped vascular system

Cultivations

Weeding

Cover Crops

All of the above