31.
Which one of the following parts of human brain is the regulating centre for swallowing and vomiting?

32.
Compared to land, the open oceans

33.
Study of effect of radiation on plant and animal is

34.
Melvin calvin got Noble Prize for his studies on

35.
Kyoto Protocol is associated with

36.
Through nitrogen fixation process nitrogen in the atmosphere is converted into

37.
In plants, which cells carry out photosynthesis?

38.
Part of the plant where photosynthesis generally occurs

39.
The energy stored in photosynthesis is obtained from

40.
Maximum fixation of solar energy is done by

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