Most plants obtain their nitrogen from the soil in the forms of:
Plants that do not germinate when exposed to light are called as___Â
Organs have associated to form functional systems, each system concerned with a specific physiological function. Which of the following organism shows t...
A system in which fast growing fodder, shrubs and trees are planted for purpose of mulch green manure soil conservation is
First Milk produced by cow immediately after giving birth to calf which is nutritious and rich in antibody