Question

Consider the following three statements and select the correct option stating which ones are true(T) and which ones are false(F).
i.Hybridization is the crossing of two or more types of plants for bringing their traits together in progeny.
ii.Semi-dwarf rice varieties were derived from IR-8 and Taichung Native-1.
iii.Hybrid breeding has led to the development of several high yielding varieties resistant to water stress.
(A)i-F, ii-T, iii-T
(B)i-T, ii-T, iii-F
(C)i-F, ii-T, ii-F
(D)i-T, ii-T, iii-T

Answer 1

Hint: Hybridization is commonly referred to as the combination of two genetically different parents leading to the generation of hybrids who possess qualities of both the parents.

Complete answer:
 Hybridization are broadly of three different types- intraspecific hybridization, interspecific hybridization and in situ hybridization. Intraspecific hybridization is the process of crossing two species that belong to the same genus. Intraspecific hybridization is where crossing between different sub species within the same species takes place. In situ hybridization is mostly related to nucleic acids, it helps in the detection of a specific DNA sequence in a sample that is being analyzed. Hybridization in self-pollinated plants can be done by different methods such as- pedigree method, bulk method, single seed descent method, back cross method and multiple cross method. Hybridization in cross-pollinated plants can be done by- single cross method and double cross method. Hybridization in plants is of agricultural importance since it helps to make the plant hardy and also resistant to stressful conditions. Semi dwarf varieties of rice were derived from IR-8 and Taichung Native-1 through hybridization that results in a stronger stalk which does not fall in wind.

Hence, the correct answer is option (D)

Note: Thus the process of hybridization is used by many researchers to develop different varieties of plants of agricultural importance having desired properties that are of advantage to the plant as well as the breeder.