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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