Plant breeding for disease resistance and insect resistance - class-X
Description: plant breeding for disease resistance and insect resistance | |
Number of Questions: 23 | |
Created by: Amal Dixit | |
Tags: strategies for enhancement in food production biology plant breeding botany breeding and biotechnology |
Which of the following is incorrectly paired?
Resistance to $jassids$ in cotton plants and to cereal leaf beetle in wheat plants is due to _____________.
Hairy leaves of many plants are associated with ________________.
Which of the following statements is correct regarding nectarless cotton varieties?
Maize generates resistance against stem borers by having ___________________.
Yellow mosaic virus resistant variety $Parbhani$ $Kranti$ belongs to __________.
Exchange of germplasm is carried mostly through shoot tips because it is
Any organism that damages the economic and physical well-being of humans is called
Pusa Gaurav variety resistant to insect pest developed by hybridization and selection belong to:
Pyrilla is a
In which of the following plant due to the presence of High aspartic acid, low nitrogen, this plant leads to resistance for stem borers.
What is a clone?
Who used x-rays for the production of mutations?
A gene bank is a place where valuable plant material is preserved in viable condition. Gene banks are parts of
Cultivated tobacco, Nicotine tobacco has $2n=48$ chromosomes and is amphidiploids. Nicotine Sylvester's which one of the progenitors of Nicotine tobacco has $2n=24$ chromosomes and is diploid. It has contributed one genome to Nicottama tobacco. When these two species are hybridized, the critical chromosomal associations at meiosis in the hybrid will be.
The colour of high yielding Mexican wheats were not liked by the Indians. It was originally red grained. Their cultivation was adopted in India on the large, scale only when exposure to gamma radiations converted them to amber grained. Which of following methods of plant-breeding has been put into practice in the given case?
Which of the following is an example of mutation breeding?
Pullorum disease of chickens is caused by
Which among the following is Eco-frinedly method to protect crops?
Which of the following statements is not correct about fertilizer?
Cattle feed should contain
Haploid plants are preferred over diploids for mutation study because in haploids
The increase in crop yield with green manure is approximately