Test Preparation on Biology-Strategies for Enhancement in food Production
1.
Agriculture originates in the Mesolithic age about
2.
In hexaploids wheat, the haploid (n) and basic (x) numbers of chromosomes are
Total chromosomes in Triticumvulgare the cultivated hexaploid wheat is 42, So 42/2=21 is a haploid number of it. Basic chromosome number of all its parents n =7.
3.
Emasculation is a part of
During hybridization, female parent stamens are removed. It is called emasculation and it prevents unwanted self-pollination
4.
In maize, hybrid vigor is exploited by
When two inbred lines are crossed, hybrid vigor is more.
5.
Which of the following is generally used for induced mutagenesis in crop plants?
Crop plants are subjected to alpha particles
6.
Triticale is the hybrid between wheat and
Across between wheat and rye is called joining the parts of their generic names Triticum and cecalecerale
7.
The new varieties of plants are produced by
Selection of plants with desirable characters and crossing them with cultivars is done to obtain new varieties
8.
The reason for vegetatively reproducing crop plants for maintaining hybrid vigour is that
Is the plant is reproducing vegetatively there is no fear of losing desirable traits in segregation
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