Electrolytes leakage is found greater in______________?

A. HD grains
B. LD grains
C. All the above
D. non of these

Use of linear measurements of plumule growth as a vigour test was first suggested by_______________?

A. Woodstock (1976)
B. Germ (1949)
C. Baskin (1972)
D. Maguire (1962)

Seed leachate conductivity is significantly higher in seeds having_________________?

A. Higher shoot weight
B. Lower shoot weight
C. Higher root weight
D. None of the above

Air contains___________________?

A. 70% nitrogen
B. 50% nitrogen
C. 78% nitrogen
D. None of the above

The oxygen concentration in the air is________________?

A. 30%
B. 21%
C. 16%
D. 45%

Cultivation of same crop year after year is called________________?

A. Single cropping
B. Monocropping
C. Double, cropping
D. All the above

Highly decomposed stage of organic matter is called_______________?

A. Cellulose
B. Organic acid
C. Humus
D. All the above

Narcotic crops mainly grown in Pakistan is_________________?

A. Pyrethrum
B. Cocon
C. Tobacco
D. Co see

Partially decomposed organic matter is termed as___________________?

A. Humus
B. Farm yard manure
C. Composet
D. All the above

the layer of atmosphere which blocks ultraviolet radiation from sun is___________________?

A. Stratosphere
B. Ozone
C. Ozosphere
D. All the above