Which of the following disease(s) is/are poultry disease?

(1) Aspergillosis

(2) Ranikhet disease

(3) Gill rot

(4) Black rot

Both (1) and (2)
Both (3) and (4)
Only (3)
Only (4)

Choose the correct statements

(1) Protoplasts of different cells of the same plant are fused.

(2) Protoplasts from cells of different species can be fused.

(3) Treatment of cells with cellulase and pectinase is mandatory.

(4) The hybrid protoplast contains characters of only one parental protoplast.

(4) and (3)
(1) and (2)
(3) and (2)
(2) and (3)

Choose the correct option

A → (1), (3), (5); B → (2), (4), (6)
A → (3), (4), (5), (6); B → (1), (2)
A → (1), (2), (4); B → (3), (5), (6)
A → (1), (2); B → (3), (4), (5), (6)

Match Column – I with Column – II

A → (4); B → (3); C → (2); D → (1); E → (6); F → (7); G → (5)
A → (4); B → (1); C → (2); D → (3); E → (7); F → (6); G → (5)
A → (1); B → (2); C → (3); D → (4); E → (6); F → (7); G → (5)
A → (2); B → (4); C → (1); D → (3); E → (6); F → (7); G → (5)

Match Column – I with Column – II

A → (3); B → (2); C → (1); D → (4)
A → (3); B → (1); C → (4); D → (2)
A → (1); B → (3); C → (4); D → (2)
A → (2); B → (1); C → (3); D → (4)

Tissue culture technique can produce infinite number of new plants from a small parental tissue. The economic importance of the technique is in raising

Variants through picking up somaclonal variations
Genetically uniform population identical to the original parent
Homozygous diploid plants
Development of new species

Solution

The method of producing thousands of plants through tissue culture is called micro-propagation. Each of these plants will be genetically identical to the original plant from which they were grown,i.e., they are somaclones. Many important food plants like tomato, banana, apple have been produed on commercial scale using this method.

Which of the following has maximum genetic diversity in India?

Rice
Mango
Wheat
Groundnut

Solution

During the period 1960 to 2000 rice production went up from 35 million tonnes to 89.5 million tonnes. This was due to the development of semi-dwarf varieties of rice.There are 2,00,000 varieties of rice in India.

In plant breeding programmes, the entire collection (of plants/seeds) having all the diverse alleles for all genes in a given crop is called :

cross-hybridisation among the selected parents.
evaluation and selection of parents
germplasm collection
selection of superior recombinants

Solution

Germplasm collection is the first step of plant breeding programmes. As genetic variability is the root of any breeding programme. In many crops pre-existing genetic variability is available from wild relatives of the crop. Collection and preservation of all the different wild varieties, species and relatives of the cultivated species(followed by their characteristics) is a pre requisite for effective exploitation of natural genes available in the population.

Consumption of which one of the following foods can prevent the kind of blindness associated with vitamin ‘A’ deficiency?

‘Flavr Savr’ tomato
Canolla
Golden rice
Bt-Brinjal

Solution

Golden rice is vitamin A rich variety developed by rDNA technology and used in the treatment of vitamin A deficiency.

The process of RNA interference has been used in the development of plants resistant to

nematodes
fungi
viruses
insects

Solution

RNA interference has been used to develop plants resistant to nematodes. RNA interference is a double stranded RNA (dsRNA) induced for gene silencing phenomenon.

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