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271.

The type of parthenogenesis where only males are produced is:

A.	Arrhenotody	B.	Thelytoky
C.	Amphitoky	D.	None of the above

272.

The ultimate control through biotic agencies is expected after:

A.	One generation	B.	Two generations
C.	Three generations	D.	More than three generations

273.

The virus used successfully for the control of caterpillars of gram pod borer is:

A.	YMV	B.	TMV
C.	Granulosis virus	D.	NPV

274.

The wings of butterfly and birds are:

A.	Homologous organs	B.	Analogous organs
C.	Vestigial organs	D.	Circulatory organs

275.

Token stimuli theory was postulated by:

A.	Throsteinson	B.	House
C.	Painter	D.	Fraenkel

276.

Tomato leaf curl virus is transmitted by:

A.	Aphid	B.	Whitefly
C.	Grasshopper	D.	Butterfly

277.

Tree banding is useful for the control of:

A.	Mango hopper	B.	Bark eating caterpiller
C.	Mango mealy bug	D.	Mango stem borer

278.

Trenching is recommended for the control of either of these:

A.	White grub bettle	B.	Maize stem borer
C.	Red hairy caterpillar	D.	Army worm

279.

Triple action nozzle provides one of the following spray patterns:

A.	Holo cone, flat fan, and Solid cone	B.	Holo cone and Jet
C.	Holo cone, Solid cone and Jet	D.	Holo cone, Jet and Flat fan

280.

Ultra-low volume (ULV) or low volume concentration (LVC) refer to the use of spray volume (liquid) less than _____ litres:

A.	5	B.	7
C.	9	D.	11