Forestry

Selection of the sample trees

Determining the sample size for each diameter and height class

Felling the trees in the forest and their careful measurement

All of the above

It is sometimes recommended for plantations as for natural regeneration to put a controlled ground fire through as soon as possible

As a fire protection measure where the fire risk is great, as often with chir pine

Both (a) & (b)

None of these

2%

1%

3%

4%

The formal walls of foliage used in landscaping to define area limits have the same purpose as hedges

But create an enclosure bordered only by soft massed foliage instead of brick or wooden fence

Both (a) & (b)

None of these

Zizpyhus and Calotropis

Dalbergia and Delonix

Delonix and Albizia

Morinda and Anona

A. Modestia

A. Tortilis

A. Victoria

All of the above

1974

1976

1978

1980

CFC, CH4 and SO2

Sulphates of Na, Ca and Fe

Fly ash

All of these

Selection system

Irregular Shelterwood system

Uniform system

None of these

Swat

Naran

Kaghan

None of these