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21.

Injuries by insects is / are :

A.	An essential part of the forest ecosystem	B.	Some are beneficial; quite a few are serious pests of trees and wood products
C.	Tonica inviferana, a semal shoot borer, Ascotis imparata,	D.	A bakain defoliator and Margaronia phloalis a defoliator of mulberry are serious pests of other tree species grown in forest plantations
E.	All of the above

22.

Injuries by diseases is / are:

A.	Throughout their life	B.	Seeds decay and seedlings are killed by damping-off
C.	Generally serious in the coniferous nurseries	D.	All of the above

23.

Insects and disease of poplars/are:

A.	Like every other plant	B.	Also susceptible to may diseases and damages by bacteria, fungi, insects and wild animals
C.	Almost all parts of the tree i.e., stem, leaves, branches and roots etc., are affected by one disease of the other.	D.	Poplars have met quite of few other adversaries in different parts of Pakistan
E.	All of the above

24.

Gypsonoma bapalosarca Meyr. (Tortricidae-Lepidopaters) is / are:

A.	The larvae stituch two or more leaves together and feed in between	B.	The distribution is countrywide.
C.	The pest has 7 generations in a year	D.	It hibernates in winter as pupae and become active again in April/May
E.	All of the above

25.

Cerura wisei Swin control is:

A.	Spraying of nurseries and younger poplar plantations with 2lbs. Of Sevin 85% S.P. In 100 gallons of water per acre	B.	Spraying of nurseries and younger poplar plantations with 1 lbs of Sevin 75% S.P. In 50 gallons of water per acre
C.	Spraying of nurseries and younger poplar plantations with 2 lbs of Sevin 95% S.P. In 200 gallons of water per acre	D.	None of these

26.

Sarrothripus diplographa Hams: (Notuidae - Lepidoptera) control is:

A.	Spray dimecorn in the does of 0.05% or at the rate of 1 lb in 200 gallons of water	B.	Spray dimecorn in the does of 0.04% or at the rate of 1 lb in 300 gallons of water
C.	Spray dimecorn in the does of 0.03% or at the rate of 1 lb in 100 gallons of water	D.	None of these

27.

Plagiologera versicolor Laich: (Chrysomelidae - Coleoptera) control is:

A.	Sparay Sevin 85% in the dose of 0.1%	B.	Sparay Sevin 75% in the dose of 0.1%
C.	Sparay Sevin 65% in the dose of 0.1%	D.	None of these

28.

Melanophila picta Pall: (Burpreastidae - Coleoptera) is / are:

A.	This is flat headed stem borer	B.	The grubs are white and not more than 2.3 cm in length
C.	Both (a) & (b)	D.	None of these

29.

Aleolesthes berta Solbky: (Cerambyycidae - Celeoptera) is / are:

A.	Stem borer of serious nature	B.	It is found in KPK, Boluchistan and some parts of Punjab
C.	The galleries run under the bark	D.	All of the above

30.

Apriona cinerea Cher: (Lamidae-Coleoptera) is / are:

A.	The pith borer of poplars	B.	Mostly found in KPK, Azad Kashmir and Lahore
C.	The eggs are laid in eye-shaped slits made in young branches by ovipositing adult	D.	All of the above