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181.

Which one of the following is the site of protein synthesis?

A.	Ribosomes	B.	t-RNA
C.	m-RNA	D.	r-RNA

182.

In mass selection, plants are selected on the basis of:

A.	Phenotypes	B.	Genotypes
C.	Homozygosity	D.	None of the above

183.

In pedigree breeding single plants are selected in which one of the following generation:

A.	F5	B.	F3
C.	F2	D.	F

184.

In potato the inflorescence is:

A.	Helicoid	B.	Scropioid cyme
C.	Umbel	D.	Raceme

185.

In Primula sp:

A.	Sporophytic incompatibility found	B.	Gametophytic incompatibility found
C.	Heteromorphic incompatibility found	D.	Homomorphic incompatibility found

186.

In RNA, nitrogen bases are same as in DNA except:

A.	Uracil instead of Thymlnine	B.	Cytosin instead of Thymine
C.	Adenine instead of Guanine	D.	Thymine instead of Adenine

187.

In self-incompatibility system:

A.	Pollen not produced	B.	Self pollination takes place
C.	Pollen does not germinate on self-pollination	D.	All are correct

188.

In solanaceae, the flowers are:

A.	Actionomorphic bisexual and epigynous	B.	Zygomorphic, unisexual and perigynous
C.	Actinomorphic, bisexual and hypogynous	D.	Actinomorphic, bisexual and perigynous

189.

In sorghum somatic chromosome number is 20. What would be its chromosome number in the endosperm?

A.	10	B.	20
C.	30	D.	40

190.

Which one f the following is not dioecious plant?

A.	Datepalm	B.	Vallisnaria
C.	Maize	D.	Papaya