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81.

China rose is a :

A.	Herb	B.	Shrub
C.	Tree	D.	Climber

82.

Chromosome numbers in somatic cells of a maize plant are:

A.	22	B.	26
C.	14	D.	20

83.

Chromosome which pair at meiotic prophase and are similar size, shape, structure and function are known as:

A.	Homologous	B.	Isocentric
C.	Isochromosome	D.	Acentric

84.

CIMMYT is located at:

A.	Miexico	B.	England
C.	Spain	D.	Nigeria

85.

Cliestogamy encourages:

A.	Self pollination	B.	Cross pollination
C.	Apomixes	D.	Inbreeding depression

86.

Clone in general is:

A.	Homozygous	B.	Heterogeneous
C.	Heterozygous	D.	None of the above

87.

Commercial banana have ______ instead of 22 chromosomes of ordinary diploid varieties:

A.	13	B.	23
C.	33	D.	43

88.

Complementary gene produces phenotypic ratio:

A.	3;1	B.	13;3
C.	15;1	D.	9;7

89.

Composites are developed by using:

A.	Advanced generation seed mixtures obtained from high yielding intervarietal or interracial crosses	B.	Hybrid directly from intervarietal crosses
C.	Recurrent selection for specific combining ability	D.	The hybrid of an inbred with an open-pollinated variety

90.

Conifers are abundant in:

A.	Tropical zone	B.	Alpine zone
C.	Temperate zone	D.	Subtropical zone