CBSE
Multiple Choice QuestionsWhich one of the following is a systematic insecticide
Malathion
Endrin
Parathion
Furadan
By which of the following methods, new and better varieties of plants can be formed
Selection
Grafting
Hybridization
Hybridization followed by selection
Percentage composition of fibroin and sericin in silk is
50 : 40
80 : 20
30 : 70
40 : 60
In plant tissue culture, the callus tissues can be regenerated into complete plantlets primarily by altering the concentration of
sugars
vitamins
amino acids
hormones
In honey, the percentage of maltose and other sugar is
9.2
8.81
10.5
11.2
Pieces of plant tissue used in culture is called
explant
domaclone
inoculant
clone
Root cells of wheat has 2n = 42 chromosomes. Which one of the following is the basic chromosome number of wheat?
42
21
7
14
Which one of the following poultry birds is not an english breed?
Sussex
Australorp
Orpington
Minorca
Micropropagation is a technique for production of
true to type plants
haploid plant
somatic hybrids
somaclonal plants
The father of green revolution in India is
Calvin
Haberlandt
Norman Borlaug
Swaminathan
