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Food Production and Plant Breeding (AIPVT)

Description: hybridization Crop Improvement
Number of Questions: 15
Created by:
Tags: hybridization Crop Improvement
Attempted 0/15 Correct 0 Score 0

A radish-cabbage cross is a type of

  1. interspecific hybridisation

  2. intergeneric hybridisation

  3. cybridisation

  4. somatic hybridisation


Correct Option: B
Explanation:

Radish and cabbage belong to two different genera, so it is intergeneric hybridisation.

F1 hybrids are always sterile in

  1. interspecific hybridisation

  2. intergeneric hybridisation

  3. somatic hybridisation

  4. cybridisation


Correct Option: B
Explanation:

F1 hybrids are always sterile in intergeneric hybridisation.

Colchicine helps in

  1. protein synthesis

  2. DNA replication

  3. doubling of chromosomes

  4. spindle formation


Correct Option: C
Explanation:

Colchicine helps in doubling of chromosomes.

When is intergeneric hybridisation used?

  1. When the genes for desirable characters are found in species of the same genus

  2. When the genes for desirable characters are not found between two different genera of the same family

  3. When sexual incompatibility can be overcome

  4. When successful hybridisation is desired always


Correct Option: B
Explanation:

Intergeneric hybridisation is used when the genes for desirable characters are not found between two different genera of the same family.

What is the crossing between two species of the same genus called?

  1. Intergeneric hybridisation

  2. Interspecific hybridisation

  3. Somatic hybridisation

  4. Cybridisation


Correct Option: B
Explanation:

The crossing between  two species of the same genus is called interspecific hybridisation.

What is the ploidy of Triticum aestivum?

  1. Triploid

  2. Tetraploid

  3. Hexaploid

  4. Diploid


Correct Option: C
Explanation:

Triticum aestivum is hexaploid.

T. duran was evolved from

  1. T. speltoids

  2. T. monococcum

  3. T. beoticum

  4. T. turgidum


Correct Option: D
Explanation:

T. durans evolved from T. turgidum. 

Which of the following is an interspecific hybridisation?

  1. B. oleracea X T. aestivum

  2. R. sativus X B. oleracea capitata

  3. T. aestivum X T. compactum

  4. T. aestivum X S. cereale


Correct Option: C
Explanation:

In interspecific hybridisation, two different species of the same genera are involved.

Triticale is obtained when wheat is crossed with

  1. maize

  2. oats

  3. rye

  4. rice


Correct Option: C
Explanation:

Triticale is obtained on crossing wheat with rye.

Which is the first man-made crop?

  1. Triticale

  2. Raphanobrassica

  3. UP-2382

  4. UP-1109


Correct Option: A
Explanation:

Triticale is the first man-made crop.

______ is the modern bread wheat.

  1. T. monococcum

  2. T. aestivum

  3. T. turgidum

  4. T. beoticum


Correct Option: B
Explanation:

T. aestivum is the modern bread wheat.

How is creation of new plants possible?

  1. Interspecific hybridisation

  2. Intergeneric hybridisation

  3. Cybridisation

  4. Somatic hybridisation


Correct Option: B
Explanation:

New plant genus is produced by intergeneric hybridisation.

Which hybridisation method is used to transfer disease resistance and male sterility?

  1. Intergeneric hybridisation

  2. Interspecific hybridisation

  3. Cybridisation

  4. Somatic hybridisation


Correct Option: B
Explanation:

Interspecific hybridisation is used to transfer disease resistance and male sterility.

What are the plants modified by genetic engineering called?

  1. Hybrid plants

  2. Transgenic plants

  3. Elite plants

  4. Improved varieties


Correct Option: B
Explanation:

Plants modified by genetic engineering are called transgenic plants.

Kanchan, Swati, Sujata and Sonalika are improved varieties of

  1. maize

  2. wheat

  3. rye

  4. rice


Correct Option: B
Explanation:

Kanchan, Swati, Sujata and Sonalika are improved varieties of wheat.

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