41.
The seeds can not be used in second generation is

42.
Zinc is essential for

43.
Photophosphorylation takes place during

44.
The situations lead to the cross pollination is

45.
Genetic material of Prion is

47.
Choose the wrong one.

48.
The principle of limiting factors was proposed by

49.
How many elements are required for the healthy growth and development of the plants?

50.
ER is generally present in which cells?