Tag: plant breeding for food production

Shoot tip culture maintains virus free plant. It is used for international exchange of germplasm is vegetatively multiplied cultivars, e.g., Banana, Potato.

competes with humans, domestic animals, or desirable plants for food or An organism should not be considered a pest until it is proven to be one. The economic losses caused by pest damage, if the pest population continued to or component sharing the site usually affect the actions and well-being of many others. So, the correct option is "D" (Pest).

So, the correct option is 'rapeseed mustard'

A.Cotton – Smooth leaved and nectar less cotton varieties do not attract bollworms

B.Sugar cane – Saccharum barberi is crossed with Saccharum officinarum, the newly formed varieity shows the desirable qualities of high yield, thick stems, high sugar and ability to grow.

C.Maize – High aspartic acid, low nitrogen and sugar content in maize leads to resistance to maize stem borers.

D.Wheat – Solid stems lead to non preference by the stem sawfly.

So, the correct answer is ‘Maize’.

Clone is a group of plants produced from a single plant through asexual reproduction or progeny of single plant obtained by asexual reproduction is known as clone.

The mutagenic property of mutagens was first demonstrated in 1927, when Hermann Muller discovered that x-rays can cause genetic mutations in fruit flies, producing phenotypic mutants as well as observable changes to the chromosomes. His collaborator Edgar Altenburg also demonstrated the mutational effect of UV radiation in 1928. 

Gene banks are a type of biorepository which preserve genetic material. For plants, this could be by freezing cuttings from the plant or stocking the seeds (e.g., in a seedbank). For animals, this is the freezing of sperm and eggs in zoological freezers until further need. With corals, fragments are taken which are stored in water tanks under controlled conditions. Plant genetic material in a 'gene bank' is preserved at -196 celsius in liquid nitrogen as mature seed dry. In plants, it is possible to unfreeze the material and propagate it, however, in animals, a living female is required for artificial insemination. While it is often difficult to utilize frozen animal sperm and eggs, there are many examples of it being done successfully. Ex-situ conservation of plant genetic resources can be achieved through different methods such as seed banks, field gene banks, in-vitro storage methods, pollen banks and DNA banks. Thus, the correct answer is option B.