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51.

A variety produced by crossing in all combination a number of lines that combine well with each other is:

A.	Composite	B.	Hybrid
C.	Synthetic	D.	Elite variety

52.

A variety produced by mixing seeds of several phenotypically outstanding lines and allowing all combinations is:

A.	Synthetic	B.	Composite
C.	Hybrid	D.	Germplasm complexes

53.

Abscisic add is a

A.	Gibberellins	B.	Auxin
C.	Retardant	D.	Inhibitor

54.

Which of the following is non-selective herbicide?

A.	Alachlor	B.	Butachlor
C.	Paraquat	D.	Atrazine

55.

Aeciospores of Puccinia recondita infect to:

A.	Barley crop	B.	Maize crop
C.	Rice crop	D.	Wheat crop

56.

Agricultural extension worker is:

A.	A messenger boy	B.	A passive person
C.	An educator	D.	Supplier of inputs for farmers

57.

Agrosan G.N. is the name of:

A.	Fungicide	B.	Weedicide
C.	Insecticide	D.	None of the above

58.

Aim of seed technology is:

A.	Rapid multiplication of seeds	B.	Assured high quality seeds
C.	Timely supply of improved seeds	D.	All of the above

59.

All fruits are in general _______ in nature:

A.	Acidic	B.	Basic
C.	Neutral	D.	All of the above

60.

The bacteroid Rhizobium is:

A.	Macroaerobic	B.	Anaerobic
C.	Microaerobic	D.	None of these