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Laabri

XII- Post- Ch 9

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Last updated about 6 years ago
15 Nsɛmmisa
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1.

Write a professional approach at genetic level that can help the farmer to improve the milk yield of low milk-producing cows in his farm.

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2.

Mark the odd one in each of the following groups. Red rot of sugarcane, Black rot of crucifer, Late blight of Potato, Brown rust of wheat.

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3.

Mark the odd one in each of the following groups.

Outcrossing, Inbreeding, Inter-specific hybridisation, Cross-breeding.

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4.

Match the items in Column I with those in Column II

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5.

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.

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6.

Inbreeding depression is characterized reduced fertility and _______________

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7.

Give one suggestion to overcome the problem of inbreeding depression.

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8.

The technique of obtaining a large number of plantlets by tissue culture method is known as

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9.

The scientific process by which crop plants are enriched with certain desirable nutrients is called:

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10.

In 2000, Maize was biofortified for lysine and _____________

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11.

Wheat variety, known as _______________ having a high protein content, has been used as a donor for improving cultivated wheat.

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12.

The variety of Brassica which resistant to aphids

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13.

Mention animal breeding method in whcih newly produced hybrid may be subjected to some form of inbreeding and selection to develop new stable breeds that may be superior to the existing breeds.

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14.

The smooth leaved and nectar-less cotton varieties give resistance to______________

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15.

The north India variety of sugar cane which had poor sugar content and yield is ______________