Given below are a few statements regarding somatic hybridization.Choose the correct statements.
(i)protoplasts of different cells of the same plant are fused
(ii)protoplasts from cells of different species can be fused
(iii)treatment of cells with cellulase and pectinase is mandatory
(iv)the hybrid protoplast contains characters of only one parental protoplast.

1

(a)

(i) and (iii)

(b)

(i) and (ii)

(c)

(iii) and (iv)

(d)

(ii) and (iii)

An explant is:

1

(a)

 dead plant

(b)

part of the plant

(c)

part of the plant used in tissue culture

(d)

part of the plant that expresses  a specific gene

The biggest constraint of plant breeding is :

1

(a)

availability of desirable gene in the crop and its wild relatives

(b)

infrastructure

(c)

trained manpower

(d)

transfer of genes from unrelated sources

To isolate protoplast, one needs :

1

(a)

pectinase

(b)

cellulase

(c)

both pectinase and cellulase

(d)

chitinase

Which one of the following is a marine fish :

1

(a)

Rohu

(b)

Hilsa

(c)

Catla

(d)

Common carp

33% India's Gross Domestic Product comes from

1

(a)

Industry

(b)

Agriculture

(c)

Export

(d)

Smallscale cottage industry

A collection of all the alleles of all the genes of a crop plant is called

1

(a)

germplasm collection

(b)

protoplasm collection

(c)

herbarium

(d)

somaclonal collection

Inbreeding is carried out in animal husbandry because it

1

(a)

increases vigour

(b)

improves the breed.

(c)

increases heterozygosity.

(d)

increases homozygosity.

A group of animals which are related by descent and share many similarities are referred to as

1

(a)

breed.

(b)

race.

(c)

variety.

(d)

species.

Which one of the following combination would a sugarcane farmer look for in the sugarcane crop?

1

(a)

Thick stem, long internodes, high sugar content and disease resistant.

(b)

Thick stem, high sugar content and profuse flowering.

(c)

Thick stem, short internodes, high sugar content, disease resistant.

(d)

Thick stem, low sugar content, disease resistant.