Number of wild species of rice are
12
18
16
25
The animals with shells are
Molluscs
Echinodermates
Both a and b
None of these
Pure breed is obtained in this selection
mass selection
clonal selection
pedigree method
all the above
Wild plants have the following characters
thorns are present
they can thrive in water logged soils
they are resistant to drought conditions
Which of the following is a pulse crop?
neem
redgram
banana
apple
Pearl is made up of
Calcium carbonate
magnesium carbonate
calcium silicate
sodium carbonate
Rice belongs to the genus
Oryza
Sativa
Indica
Japanica
Fossil fuels are
coal
petroleum
both a and b
none of these
The most common technique used for improving crops is
watering
deweeding
hybridisation
ploughing
Secondary hair of sheep is also called
fleece
wool
both the above
none of the above
