Economically important crop plants with superior quality are raised by ______.

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Economically important crop plants with superior quality are raised by Breeding.

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Methods of Plant Breeding for Crop Improvement

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Chapter 20: Breeding and Biotechnology - Evaluation [Page 297]

Chapter 20 Breeding and Biotechnology
Evaluation | Q II. 1. | Page 297

______ is the chemical used for doubling the chromosomes.

The process of producing an organism with more than two sets of chromosome is called mutation.

Iron fortified rice variety determines the protein quality of the cultivated plant

Golden rice is a hybrid.

Assertion: Colchicine reduces the chromosome number.

Reason: It promotes the movement of sister chromatids to the opposite poles.

Semi-dwarf varieties were introduced in rice. This was made possible by the presence of dwarfing gene in rice. Name this dwarfing gene.

State the importance of biofertiliser.

Name three improved characteristics of wheat that helped India to achieve high productivity

Describe mutation breeding with an example.

With a neat labelled diagram explain the techniques involved in gene cloning.