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261.

Pollination taking place between two flowers (bisexual or unisexual) borne by two separate plants of the same species is called:

A.	Self pollination	B.	Cross pollination
C.	Xenogamy	D.	Geitonogamy

262.

Polygenes affecting the same trait, with each enhancing the phenotype are termed as:

A.	Amnions	B.	Alcaptonuria
C.	Allosteric effect	D.	Additive factors

263.

Population improvement is used:

A.	To accumulate deleterious alleles	B.	To maintain homozygosity
C.	To accumulate favourable alleles	D.	To increase heterozygosity

264.

Pototo and Jerusalem artichoke are example of:

A.	Rhizome	B.	Tuber
C.	Bulb	D.	Corn

265.

Probably the most useful measurable property in the soil -plant-air system is:

A.	Matric Potential	B.	Water Potential
C.	Osmotic Potential	D.	Redox Potential

266.

Progeny of a hybrid plant:

A.	Breds true	B.	Resembles maternal plant
C.	Resembles paternal plant	D.	Segregation

267.

Prop or still roots are found in:

A.	Acacia tree	B.	Tomato plant
C.	Mango tree	D.	Banyan tree

268.

Protoplasm is a:

A.	True solution	B.	Unsaturated solution
C.	Suspension	D.	Polyphonic colloidal system

269.

Pseudo-fertility may also occur late in the season as in:

A.	Tomato	B.	Tobacco
C.	Tapioca	D.	Tea

270.

Pure line is:

A.	The progeny of selfed heterozygous plant	B.	The progeny of selfed homozygous plant
C.	The progeny of vegetatively progagated plant	D.	The progeny of a nucleus seed